Transport Equipment for Critical Care

Quick Answer

Critical care transport equipment encompasses specialized devices designed to maintain ICU-level care during intrahospital and interhospital transfer. The core components include transport ventilators (Hamilton T1, Oxylog 3000+, LTV series), multiparameter monitors with extended battery life, transport stretchers/beds (bariatric, isolation-capable), oxygen delivery systems (liquid oxygen, high-pressure cylinders), and syringe pump infusion systems. Key safety considerations include altitude physiology (Boyle's law gas expansion, Dalton's law hypoxia), motion/vibration effects, temperature extremes, and battery endurance. Australian retrieval services (RFDS, CareFlight, MedSTAR, NETS) operate under CICM IC-1 guidelines requiring minimum standards for personnel, equipment, and monitoring. Adverse events occur in 5-70% of transports (PMID: 20412128), most commonly hemodynamic instability, equipment failure, and respiratory deterioration. A structured pre-transport checklist reduces preventable complications.

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CICM Exam Focus

What Examiners Expect

Second Part Written (SAQ):

Common SAQ stems:

• "You are preparing to transfer a mechanically ventilated patient with ARDS from a regional hospital to a tertiary ICU. Outline your pre-transport preparation including equipment requirements."
• "Describe the physiological effects of altitude on a critically ill patient during aeromedical transport."
• "A patient deteriorates during interhospital transfer. List the common causes and your systematic approach to management."
• "Compare and contrast the features of transport ventilators with ICU ventilators."
• "Discuss the safety considerations for oxygen delivery during transport."

SAQ scoring expectations:

• Systematic equipment checklist (SOAPME or similar mnemonic)
• Understanding of gas laws (Boyle's, Dalton's, Henry's)
• Knowledge of transport ventilator capabilities and limitations
• Battery and oxygen endurance calculations
• CICM IC-1 guideline awareness
• Australian retrieval service familiarity

Second Part Hot Case:

Typical presentations:

• Patient requiring urgent interhospital transfer for ECMO
• Post-transport patient with undiagnosed complication
• Family communication regarding retrieval decision

Examiners assess:

• Systematic approach to transport preparation
• Risk-benefit analysis for transport timing
• Equipment selection rationale
• Team composition and briefing
• Handover quality

Second Part Viva:

Expected discussion areas:

• Transport ventilator selection criteria
• Altitude physiology for aeromedical transport
• Oxygen calculation and contingency planning
• Drug infusion considerations during transport
• Australian retrieval service structure
• Pre-transport checklist rationale
• Management of in-transit emergencies

Examiner expectations:

• Safe, consultant-level transport planning
• Knowledge of equipment capabilities
• Understanding of physics/physiology
• CICM IC-1 guideline familiarity
• Resource stewardship

Common Mistakes

• Underestimating oxygen requirements for transport duration
• Not accounting for altitude effects on gas volumes
• Failure to verify battery endurance for all equipment
• Inadequate sedation planning for prolonged transport
• Not securing equipment appropriately
• Omitting defibrillator from transport checklist
• Poor communication/handover at destination

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Key Points

Must-Know Facts

1. CICM IC-1 Guideline: Minimum standards require appropriate personnel (trained in transport medicine), equipment (ventilator, monitor, defibrillator, suction, drugs), and documentation. Escort must be capable of managing airway and hemodynamics.

2. Transport Ventilators: Designed for durability, portability, and operation across environmental conditions. Must be turbine-driven (not require compressed air), have long battery life (4-10 hours), and withstand vibration/motion. Examples: Hamilton T1, Oxylog 3000+, LTV 1200.

3. Altitude Physiology: Boyle's law (P1V1 = P2V2) causes gas expansion at altitude - pneumothorax worsens, ETT cuff expands, trapped bowel gas increases. Dalton's law reduces PO2 - cabin altitude 8000 ft = FiO2 equivalent 0.15 at sea level.

4. Oxygen Calculation: Duration (min) = [Cylinder pressure (psi) × Cylinder volume (L)] / [Flow rate (L/min) × 200]. Always carry 2× expected requirement + contingency for delays.

5. Battery Endurance: All equipment must have battery life exceeding expected transport duration by 50%. Carry backup batteries. Verify charge state before departure.

6. Transport Monitoring: Minimum: ECG, SpO2, NIBP, capnography. Invasive: Arterial line (continuous BP), CVP if hemodynamically unstable. All monitors must be visible during transport.

7. Syringe Pumps: Transport pumps must have anti-free-flow mechanisms, long battery life, and be resistant to altitude pressure changes affecting flow rates.

8. Stretcher Systems: Must accommodate patient weight (bariatric capability to 250-400 kg), have integrated equipment rails, allow defibrillation, and interface with aircraft/ambulance restraints.

9. Australian Retrieval Services: RFDS (remote/rural), CareFlight (NSW/NT trauma), MedSTAR (SA integrated), NETS (NSW paediatric/neonatal), RSQ (Queensland), PIPER (Victoria paediatric), WINX (WA). All follow CICM IC-1 standards.

10. Pre-Transport Checklist: Systematic verification prevents 50% of transport-related adverse events. Use mnemonic-based checklists (SOAPME, ABC-DEFG).

Memory Aids

SOAPME - Transport Equipment Check:

• Suction (portable, battery-powered, functioning)
• Oxygen (supply, flow, backup cylinder)
• Airway (ETT secure, spare tube, laryngoscope, BVM)
• Pharmacy (sedation, vasopressors, emergency drugs)
• Monitors (ECG, SpO2, EtCO2, BP, arterial line)
• Electrics (batteries charged, backup power, defibrillator)

ABC-DEFG - Pre-Transport Briefing:

• Airway secured, backup plan
• Breathing - ventilator checked, oxygen sufficient
• Circulation - lines secure, drugs infusing, fluids available
• Disability - sedation adequate, neuro status documented
• Exposure - temperature, skin integrity, IV sites
• Family - informed, contact details
• Go - final equipment check, team ready

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Definition & Epidemiology

Definition

Critical care transport equipment encompasses all medical devices, monitoring systems, and support infrastructure required to maintain ICU-level patient care during transfer between locations (intrahospital or interhospital).

Transport Categories:

CICM Definition (IC-1): "The transport of critically ill patients requires the same level of care provided in the ICU, adapted to the transport environment with appropriate equipment, monitoring, and personnel."

Epidemiology

International Data:

• Intrahospital transport: 15-30% of ICU patients transported at least once (PMID: 30843236)
• Interhospital transfer: 5-10% of ICU admissions involve interhospital transfer (PMID: 22136208)
• Adverse events: Range from 5-70% depending on definition and patient acuity (PMID: 20412128)
• Serious adverse events: 4-8% of transports (PMID: 15566685)

Australian/NZ Data (ANZICS, State Retrieval Services):

• RFDS transports approximately 36,000 patients annually across 7.9 million km²
• MedSTAR (SA): 8,500+ retrievals annually, 95% adult patients
• NETS (NSW/ACT/VIC): 3,000+ neonatal and paediatric transfers annually
• CareFlight (NSW): 5,000+ primary and secondary missions annually
• Median transport time in metropolitan areas: 45-90 minutes
• Remote area transfers may exceed 6-12 hours

Risk Factors for Transport Complications:

• Patient factors: High illness severity (APACHE II >20), hemodynamic instability, mechanical ventilation, vasopressor dependence
• Transport factors: Long duration, mode (road worse than air for vibration), altitude exposure
• System factors: Inadequate preparation, inexperienced team, equipment failure

Outcomes:

• Transport-related mortality: 0.5-1% (PMID: 10541680)
• Preventable adverse events: 50-60% of all transport events
• Equipment failure contribution: 20-30% of adverse events

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Applied Basic Sciences

Physics of Transport

Boyle's Law (P1V1 = P2V2): At constant temperature, gas volume is inversely proportional to pressure.

Clinical implications at altitude (cabin pressure drops):

• Pneumothorax: Volume increases 30% at 8,000 ft cabin altitude - place chest drain before flight
• ETT cuff: Air-filled cuffs expand - can cause tracheal necrosis; fill with saline or monitor cuff pressure in flight
• Bowel gas: Expansion may cause abdominal distension, vomiting, aspiration risk
• Air splints: May become over-tight at altitude
• IABP: Gas-driven balloons require adjustment for altitude

Dalton's Law (Partial Pressures): Total pressure = sum of partial pressures. At altitude, reduced atmospheric pressure decreases PO2.

Clinical implication: Patient requiring FiO2 0.4 at sea level needs FiO2 0.6+ at 8,000 ft cabin altitude.

Henry's Law (Gas Solubility): Gas dissolved in liquid is proportional to partial pressure. At altitude, nitrogen comes out of solution (decompression sickness risk in long-duration flights).

Vibration and Motion:

• Rotary wing: 4-8 Hz vibration frequency - interferes with oscillometric BP measurement
• Fixed wing: Lower vibration but prolonged duration
• Ground ambulance: Variable vibration + acceleration/deceleration forces
• Patient effects: Increased pain, motion sickness, difficulty with examination

Physiology of Transport

Hemodynamic Effects:

• Position changes (supine to sitting) during loading: 10-20% BP drop
• Vehicle acceleration/deceleration: Shifts venous pooling
• Vibration: May dislodge unstable thrombus, interfere with monitoring
• Altitude: Hypoxia causes pulmonary vasoconstriction, increased RV afterload

Respiratory Effects:

• Altitude hypoxia requires increased FiO2
• Dry aircraft air: Increases secretion viscosity
• Cold ambient temperature: Triggers bronchospasm
• Positive pressure ventilation: Gas expansion at altitude may increase plateau pressures

Neurological Effects:

• Altitude can worsen intracranial hypertension
• Vibration may exacerbate raised ICP
• Noise levels (80-100 dB in helicopter) interfere with neurological assessment

Thermoregulation:

• Ambient temperature in aircraft: -56°C at 35,000 ft (cabin heated but gradients exist)
• Burns/trauma patients at high risk of hypothermia
• Equipment may malfunction at temperature extremes

Pharmacology During Transport

Infusion Considerations:

• Altitude pressure changes affect syringe pump accuracy (up to 5-10% flow variance)
• Turbulence may accelerate free-flow from unsecured lines
• Cold temperature reduces drug stability (some insulins, vasopressors)

Drug Stability in Transport:

Emergency Drug Kit: Required for all critical care transports:

• Adrenaline (epinephrine): Cardiac arrest, anaphylaxis
• Atropine: Bradycardia
• Amiodarone: Arrhythmias
• Midazolam/propofol: Sedation
• Fentanyl/morphine: Analgesia
• Rocuronium/suxamethonium: Emergency paralysis
• Vasopressors: Noradrenaline, vasopressin
• Glucose 50%: Hypoglycemia
• Sodium bicarbonate 8.4%: Acidosis (selected cases)
• Calcium chloride/gluconate: Hypocalcemia, hyperkalemia

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Transport Ventilators

Classification

Transport Ventilator Categories:

Commonly Used Transport Ventilators

Hamilton T1 (Swiss):

• Modes: VC-CMV, PC-CMV, PRVC, SIMV, PSV, CPAP, NIV, DuoPAP, APVcmv
• Tidal volume: 20-2000 mL (adult), 2-300 mL (paediatric)
• PEEP: 0-35 cmH₂O
• FiO2: 21-100%
• Battery: Up to 9 hours (depending on settings)
• Weight: 5.8 kg (with battery)
• Screen: Color touch screen, real-time waveforms
• Special features: Integrated suction, capnography option, ASV mode
• Altitude compensation: Automatic
• MRI: Not compatible

Dräger Oxylog 3000+ (German):

• Modes: VC-CMV, PC-CMV, SIMV, PSV, CPAP, NIV, AutoFlow
• Tidal volume: 50-2000 mL
• PEEP: 0-35 cmH₂O
• FiO2: 40-100% (or 21% with air mix)
• Battery: Up to 4 hours
• Weight: 5.4 kg
• Screen: Color display with waveforms
• Special features: Robust design, military-grade durability
• Altitude compensation: Manual adjustment required

LTV 1200 (CareFusion/Vyaire):

• Modes: VC-CMV, PC-CMV, SIMV, PSV, CPAP
• Tidal volume: 50-2000 mL
• PEEP: 0-20 cmH₂O
• FiO2: 21-100% (with blender)
• Battery: Up to 10 hours (internal + external)
• Weight: 5.9 kg
• Screen: Monochrome LCD
• Special features: Very long battery life, home ventilator capable, economical
• Limitations: No waveforms, limited alarm options

Zoll Z Vent (US):

• Modes: VC, PC, SIMV, PSV, CPAP, BiPAP
• Battery: 10+ hours
• Weight: 4.5 kg
• Special features: Integrated capnography, ventilator-defibrillator interface
• Designed for: Military/austere environment transport

Transport vs ICU Ventilator Comparison

Transport Ventilator Selection Criteria

Patient-Specific Factors:

• ARDS: Require high PEEP (≥15), precise VT control, waveform monitoring → Advanced ventilator (Hamilton T1, Oxylog 3000+)
• COPD/asthma: Need PSV capability, flow waveform to detect auto-PEEP
• Paediatric/neonatal: Low VT capability (2-50 mL), sensitive triggering
• NIV requirement: Transport ventilator with leak compensation
• Long duration (>4 hours): Extended battery life essential

Transport-Specific Factors:

• Rotary wing: Compact size, secure mounting, vibration-resistant
• Fixed wing: Altitude compensation, long battery
• Ground: Less altitude concern, vibration tolerance
• Remote/austere: Robust design, field-serviceable

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Transport Monitoring

Essential Monitoring Equipment

Minimum Monitoring (CICM IC-1):

1. Continuous ECG
2. Pulse oximetry (SpO2)
3. Non-invasive blood pressure (NIBP)
4. Capnography (EtCO2) for intubated patients
5. Temperature (for long transports or at-risk patients)

Advanced Monitoring (As Indicated):

• Invasive arterial pressure (all hemodynamically unstable patients)
• Central venous pressure (vasopressor-dependent patients)
• Cardiac output monitoring (selected cases)
• ICP monitoring (neurosurgical patients)
• EEG (status epilepticus, sedation monitoring)

Transport Monitor Features

Ideal Transport Monitor Specifications:

Commonly Used Transport Monitors:

Philips IntelliVue MX40/MX800:

• Wearable or stretcher-mounted
• Up to 12 hours battery (MX40)
• Full parameter set including IBP, EtCO2
• Wireless connectivity to hospital network
• Weight: 0.5 kg (MX40), 10 kg (MX800)

Zoll Propaq M/MD:

• Military-grade durability (MIL-STD-810G)
• Integrated defibrillator (MD model)
• 12-lead ECG acquisition
• Battery: 6-8 hours
• Weight: 4.7 kg
• CO2 mainstream or sidestream

Corpuls3 (German):

• Modular design (patient box + monitor + defibrillator)
• 8+ hours battery
• CPR feedback module
• Transport bag system
• Weight: 7.5 kg complete

GE CARESCAPE B450:

• ICU-grade monitoring in transport form
• Multi-bed telemetry capability
• Extensive trending
• Weight: 12 kg (heavier, suited for ground ambulance)

Monitoring Challenges During Transport

Artifact and Interference:

• Motion artifact: ECG, SpO2 affected by vibration/movement
• NIBP: Oscillometric BP unreliable with vibration
• Solution: Use arterial line for hemodynamically unstable patients

Noise Environment:

• Helicopter: 80-100 dB - standard alarms may not be heard
• Solution: Visual alarms, headset integration, loud audio output

Temperature Extremes:

• LCD screens may fail at <0°C or >40°C
• Solution: Pre-warm equipment, use insulated cases

Battery Management:

• Cold reduces battery efficiency by 20-40%
• Solution: Carry extra batteries, keep warm

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Stretcher and Bed Systems

Transport Stretcher Categories

Standard Ambulance Stretcher:

• Weight capacity: 159-227 kg (350-500 lbs)
• Examples: Stryker Power-PRO, Ferno PowerFlexx
• Features: Electric lift/load, adjustable height, Trendelenburg
• Limitation: Not suitable for ICU equipment integration

Critical Care Transport Stretcher:

• Weight capacity: 250-350 kg
• Examples: Stryker Power-PRO XT, Ferno iN/X
• Features: Integrated equipment rails, defibrillator shelf, IV pole mounts
• Bridge system for aircraft compatibility

Bariatric Transport Systems:

• Weight capacity: 350-450 kg
• Examples: Stryker Bariatric, Ferno 93ES
• Features: Wider frame, reinforced construction
• Consideration: Aircraft doorway width (typically 55-70 cm)
• May require specialized aircraft or ground ambulance

Isolation Transport Systems:

• Purpose: Highly infectious disease transport (Ebola, COVID-19)
• Examples: EpiShuttle, ISOPOD, ISO-ARK
• Features: Negative pressure environment, HEPA filtration, sealed ports for monitoring/procedures
• Consideration: Weight (20-40 kg empty), training required

Aircraft Compatibility

Stretcher Loading Systems:

Equipment Rail Standards:

• NATO stretcher rail: 25 mm tracks for equipment mounting
• Ferno FastLock: Proprietary quick-release system
• Stryker Performance-Load: Powered loading system

Bariatric Considerations

Weight-Related Challenges:

1. Lifting/loading: May require specialized hoists, additional personnel
2. Aircraft selection: Not all aircraft accommodate >200 kg patients
3. CPR: Standard CPR compression depth may be inadequate
4. Monitoring: Standard BP cuffs and ECG electrodes may not fit
5. Ventilation: Higher minute ventilation requirements
6. Drug dosing: Adjusted for ideal vs actual body weight

Bariatric Equipment Checklist:

• Large BP cuff (thigh cuff for upper arm)
• Extended IV lines/catheters
• Bariatric-rated stretcher confirmed
• Aircraft weight and balance calculated
• Additional personnel for patient handling
• Appropriate drug dosing calculations completed

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Oxygen Delivery Systems

Oxygen Supply Options

Compressed Gas Cylinders:

Calculation Formula: Duration (min) = [Cylinder pressure (psi) × Cylinder factor] / Flow rate (L/min)

Cylinder factors: D = 0.16, E = 0.28, G = 2.41, H = 3.14

Liquid Oxygen (LOX):

• Used for long-duration fixed-wing transport
• 1 L liquid = 860 L gaseous O2
• Advantages: Compact, lightweight for volume
• Disadvantages: Evaporative loss, handling precautions, specialized equipment
• Aircraft systems typically 115-230 L capacity = 50-100+ hours at 2 L/min

Oxygen Concentrators:

• Not suitable for high FiO2 requirements (typically deliver 87-96% at 1-5 L/min)
• Use for supplemental O2 only, not for ventilated patients requiring FiO2 >0.5
• Advantage: No consumable supply depletion

Oxygen Calculation Examples

Example 1: Ground Ambulance Transfer

• Expected duration: 90 minutes
• Safety margin: 50% (135 min total)
• Patient: Ventilated, FiO2 0.6, MV 8 L/min
• O2 consumption: 8 × 0.6 = 4.8 L/min (ventilator O2)
• Total O2 needed: 4.8 × 135 = 648 L
• Equipment: 2 × E cylinders (1250 L) provides adequate reserve

Example 2: Fixed-Wing Aeromedical

• Expected duration: 4 hours (240 min)
• Safety margin: 50% (360 min)
• Patient: Ventilated, FiO2 0.8, MV 10 L/min
• O2 consumption: 10 × 0.8 = 8 L/min
• Total O2 needed: 8 × 360 = 2880 L
• Equipment: G cylinder (5000 L) or LOX system

Altitude Correction: At altitude, reduced atmospheric pressure means ventilators consume more O2 to deliver same FiO2.

• Correction factor: multiply O2 consumption by 1.3 at 8,000 ft cabin altitude

Oxygen Safety Considerations

Transport-Specific Hazards:

1. Fire risk: Oxygen accelerates combustion - no smoking, minimize ignition sources
2. Cylinder projectile risk: Unsecured cylinders in turbulence/crash become projectiles
3. Regulator failure: Carry backup regulator
4. Altitude effects: Cylinder pressure gauges may read differently at altitude
5. Cold temperature: Flow regulators may freeze in extreme cold

Safety Protocols:

• All cylinders secured with appropriate straps/brackets
• Cylinder valves protected (caps or positioned away from impact)
• Fire extinguisher immediately available
• No petroleum-based lubricants on O2 equipment
• Regular cylinder testing/certification current

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Drug Infusion During Transport

Transport Syringe Pumps

Ideal Features:

• Anti-free-flow mechanisms (mandatory)
• Long battery life (≥6 hours)
• Lightweight (<1 kg per pump)
• Altitude-compensated flow delivery
• High-visibility display
• Audible and visual alarms
• Quick program capability
• Secure mounting to stretcher rail

Commonly Used Transport Pumps:

B. Braun Perfusor Space:

• Weight: 1.4 kg
• Battery: 8 hours
• Drug library: 500+ drugs
• Dose rate: 0.1-99.9 mL/h (syringe dependent)
• Anti-free-flow: Automatic valve

Fresenius Agilia SP MC:

• Weight: 1.3 kg
• Battery: 10 hours
• Compact size for multi-pump stacking
• Altitude compensation

Alaris CC Syringe (BD):

• Weight: 1.6 kg
• Battery: 6 hours
• Guardian software (drug library)
• Pole or rail mounting

Smiths Medical CADD Syringe:

• Weight: 0.7 kg
• Extremely compact
• Battery: 12+ hours
• Designed for ambulatory/transport

Infusion Safety During Transport

Common Problems:

1. Altitude-induced flow rate changes: Air dissolved in IV fluids can cause bubbles; syringe plunger position affected by pressure changes
2. Siphoning: Gravity can cause free-flow if pump not anti-siphon protected
3. Air embolism: Altitude gas expansion in IV line
4. Line disconnection: Movement during transport
5. Battery failure: Unexpected pump shutdown

Mitigation Strategies:

• Use anti-siphon valves on all lines
• Position infusion pumps at or below patient level
• Prime lines carefully to eliminate air
• Secure all connections with Luer-locks
• Verify battery status before departure
• Carry backup manual infusion equipment (pressure bags, drip chambers)

Critical Infusions During Transport

Vasopressors:

• Must continue uninterrupted - have backup syringe prepared
• Concentration: Use concentrated solutions to minimize fluid volume
• Standard concentrations:
  • "Noradrenaline: 4-16 mg in 50 mL (80-320 mcg/mL)"
  • "Vasopressin: 20 units in 50 mL (0.4 units/mL)"
  • "Adrenaline: 1-4 mg in 50 mL (20-80 mcg/mL)"

Sedation:

• Maintain adequate sedation to prevent agitation at altitude
• Pre-bolus before transport if lightening anticipated
• Propofol: Avoid if hemodynamically unstable
• Midazolam: More stable hemodynamically, longer half-life
• Ketamine: Bronchodilator, hemodynamically supportive

Antiarrhythmics:

• Amiodarone: Continue infusion, may crystallize if cold - keep warm
• Lidocaine: Monitor for toxicity signs

Vasodilators:

• GTN: Light-sensitive, use covered syringe
• SNP: Light-sensitive, limited stability

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Safety Considerations

Motion, Vibration, and Acceleration

G-Forces During Transport:

Vibration Effects:

• Monitoring interference (SpO2, NIBP, ECG motion artifact)
• Patient discomfort and pain exacerbation
• Equipment loosening/disconnection
• Potential for DVT dislodgement (controversial)

Securing Equipment:

• All equipment mounted on rail systems or secured with straps
• Loose items in locked compartments
• Nothing above patient that could fall
• Defibrillator and emergency equipment immediately accessible

Altitude Considerations (Summary Table)

Temperature Management

Hypothermia Prevention:

• Pre-warm transport equipment
• Use forced-air warming blankets (Bair Hugger)
• Insulate IV fluids (fluid warmers if available)
• Cover all exposed skin
• Heated transport cabin when possible

Equipment Temperature Limits:

Communication and Documentation

Pre-Transport Communication:

1. Receiving facility: Bed availability, capability confirmed
2. Transport team: Complete briefing, role assignment
3. Family: Destination, expected arrival, contact numbers
4. Medical records: Summary, investigations, medications

In-Transit Documentation:

• Vital signs every 15 minutes (or continuous if unstable)
• All interventions documented
• Any adverse events recorded
• Time-stamped transport log

Handover at Destination (ISBAR):

• Identify: Patient name, age, MRN
• Situation: Reason for transfer, current status
• Background: History, events leading to transfer
• Assessment: Current vital signs, ventilator settings, infusions
• Recommendation: Suggested next steps, outstanding investigations

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Pre-Transport Checklist

CICM IC-1 Minimum Standards

Personnel Requirements:

• Minimum 2 escorts for ventilated patient
• At least one must be capable of:
  • Managing airway emergencies
  • Initiating resuscitation
  • Administering emergency drugs
  • Adjusting ventilator settings
• For retrieval services: Doctor + nurse/paramedic standard

Equipment Requirements (Mandatory):

Structured Checklist (SOAPME-V)

S - Suction:

• Portable suction unit present and charged
• Suction catheters (appropriate sizes)
• Yankauer sucker
• Tested and functioning

O - Oxygen:

• Primary O2 cylinder (full)
• Backup O2 cylinder (full)
• Flow meter functioning
• Duration calculation completed (2× expected + 50%)
• Ventilator connected and tested

A - Airway:

• ETT position confirmed (CXR, EtCO2)
• ETT secured appropriately
• Cuff pressure checked (20-30 cmH2O)
• Spare ETT (0.5 mm smaller)
• Laryngoscope with spare blades/batteries
• Bougie/stylet
• LMA backup
• Bag-valve-mask with PEEP valve

P - Pharmacy:

• Sedation infusions prepared for duration
• Vasopressor infusions prepared (+ backup syringe)
• Emergency drug kit complete:
  • Adrenaline 1 mg ampoules × 5
  • Atropine 600 mcg ampoules × 3
  • Amiodarone 150 mg × 2
  • Midazolam 5 mg/mL × 2
  • Fentanyl 100 mcg/2mL × 5
  • Rocuronium 50 mg × 2
  • Glucose 50% × 2
  • Normal saline flushes
• IV fluids adequate for journey

M - Monitors:

• ECG leads connected, displaying
• SpO2 connected, waveform visible
• NIBP cuff correct size, cycling appropriately
• Capnograph connected, waveform visible
• Arterial line zeroed, transducer secured
• CVP monitoring if present
• ICP monitoring if present
• Alarms set appropriately
• Monitor battery charged (>80%)

E - Electrics:

• Ventilator battery charged (>80%)
• Monitor battery charged
• Syringe pump batteries charged
• Defibrillator charged and tested
• Spare batteries available
• Power cable for destination charging

V - Verify/Documentation:

• Receiving facility contacted and ready
• Transfer documentation complete
• Radiology images transferred
• Blood results printed/available
• Family notified
• Transport consent if required
• Insurance/funding confirmed (if relevant)
• All lines and tubes secured

Final "STOP" Before Departure

Before leaving ICU/ED:

1. Stable: Is the patient stable enough for transport?
2. Team ready: All personnel briefed, roles assigned?
3. Oxygen sufficient: Calculated and verified?
4. Plan: What will we do if X happens? (contingency)

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Australian Retrieval Services

Overview of Services

Royal Flying Doctor Service (RFDS):

• Coverage: All of Australia (7.9 million km²)
• Mission types: Primary evacuation, interhospital transfer, clinics
• Aircraft: Pilatus PC-12, Beechcraft King Air, Cessna
• Staffing: Doctor + flight nurse standard; may be nurse-only for stable patients
• Volume: ~36,000 patient transports annually
• Unique features: Longest-running aeromedical service globally (since 1928)

CareFlight (NSW, NT, QLD):

• Coverage: Greater Sydney, Northern Territory, regional Queensland
• Mission types: HEMS (Helicopter Emergency Medical Service), interhospital retrieval
• Aircraft: AW139, Bell 412, PC-12
• Staffing: Doctor + critical care paramedic/nurse
• Volume: ~5,000+ missions annually
• Unique features: Physician-led HEMS, trauma focus, MedSTAR partnership in NT

MedSTAR (South Australia):

• Coverage: South Australia statewide, cross-border as required
• Mission types: Adult retrieval (ground and air), coordination hub
• Aircraft: Contracted fixed-wing and rotary
• Staffing: Intensivist/anaesthetist + ICU nurse
• Volume: ~8,500 retrievals annually
• Unique features: "Single Call" integrated model, physician-led

NETS (Newborn and Paediatric Emergency Transport Service):

• Coverage: NSW, ACT, Victoria (PIPER in VIC)
• Mission types: Neonatal and paediatric interhospital transfer
• Aircraft: Road ambulance (primary), fixed-wing for distance
• Staffing: Neonatal/paediatric ICU nurse + registrar/consultant
• Volume: ~3,000 transfers annually
• Unique features: Specialized neonatal equipment, in-transport ECMO capability (selected cases)

Retrieval Services Queensland (RSQ):

• Coverage: Queensland statewide
• Mission types: Coordination of all retrieval (adult, paediatric, neonatal)
• Services: Contracts with RFDS, LifeFlight, QAS, local hospitals
• Unique features: State-wide single coordination point

PIPER (Paediatric Infant Perinatal Emergency Retrieval):

• Coverage: Victoria
• Mission types: Neonatal and paediatric retrieval
• Unique features: State-wide neonatal/paediatric service, ECMO retrieval capable

Service Selection Criteria

CICM IC-1 and Retrieval Standards

Key IC-1 Requirements for Retrieval:

1. Medical officer in charge of transport accountable for patient care
2. Equipment checked and appropriate for patient acuity
3. Continuous monitoring throughout transport
4. Communication capability (both medical consultation and emergency)
5. Documentation of care provided during transport
6. Formal handover at destination

Training Requirements:

• All retrieval clinicians: Airway management, resuscitation, transport medicine training
• Recommended: EMST/ATLS, APLS (paediatric services), aeromedical training
• CICM trainees: Transport exposure mandated in training program

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Indigenous Health Considerations

Context

Aboriginal and Torres Strait Islander peoples experience:

• 2-3× higher rates of critical illness requiring ICU admission (PMID: 26631103)
• Higher severity of illness at presentation (related to access, delayed presentation)
• Increased need for interhospital transfer due to remote location
• Potential barriers to acceptance of transport away from Country

Māori Health:

• Similar disparities in ICU admission and outcomes
• Importance of whānau involvement in decision-making
• Cultural protocols (tikanga) regarding medical procedures

Cultural Considerations for Transport

Communication:

• Involve Aboriginal Health Worker (AHW) or Aboriginal Liaison Officer (ALO) in transport planning
• Allow extra time for family discussion and consensus
• Respect that patient may have multiple decision-makers (Elders, extended family)
• Use interpreters for Aboriginal languages if English not first language

Family and Cultural Support:

• Patients may be reluctant to leave Country/community
• Family may wish to travel with patient - accommodate where possible
• Destination hospital should have Indigenous support services
• Plan for family communication during transport (if long duration)

Specific Transport Considerations:

• Explain transport process and destination in culturally appropriate terms
• Acknowledge that remote location may require transport far from home
• Offer to contact receiving hospital's Indigenous liaison before arrival
• Document patient's preferred name and pronunciation

Post-Transport:

• Ensure warm handover to Indigenous support services at receiving hospital
• Facilitate family contact on arrival
• Consider repatriation planning early if appropriate

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SAQ Practice

SAQ 1: Pre-Transport Preparation

Time Allocation: 10 minutes Total Marks: 20

Stem: You are the ICU registrar at a regional hospital. A 48-year-old male with severe ARDS (P/F ratio 85, FiO2 0.9, PEEP 14) requires interhospital transfer to a tertiary centre for consideration of VV-ECMO. The transfer will be by road ambulance (expected 90 minutes) with an aeromedical retrieval team.

Current Settings:

• Ventilator: PC-CMV, Pinsp 28, PEEP 14, RR 28, FiO2 0.9
• Sedation: Propofol 150 mg/hr, fentanyl 100 mcg/hr
• Vasopressor: Noradrenaline 10 mcg/min
• Lines: Right IJ CVC, right radial arterial line, IDC

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Question 1.1 (8 marks)

Outline your approach to pre-transport preparation including equipment requirements.

Question 1.2 (6 marks)

Calculate the oxygen requirements for this transfer and describe your contingency planning.

Question 1.3 (6 marks)

What are the specific risks during transport for this patient and how would you mitigate them?

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Model Answer

Question 1.1 (8 marks)

Systematic Preparation (SOAPME-V Approach):

Suction (0.5 marks):

• Portable suction unit charged and tested
• Suction catheters size 12-14 Fr

Oxygen (1 mark):

• Primary and backup cylinders calculated (see Q1.2)
• Flow meter tested
• Verify ventilator O2 connection

Airway (1.5 marks):

• Confirm ETT position and security
• Cuff pressure 20-30 cmH2O (saline-filled if available for altitude)
• Spare ETT (0.5 mm smaller), laryngoscope, bougie, LMA
• Bag-valve-mask with PEEP valve

Pharmacy (1.5 marks):

• Prepare sedation for duration + 50%: propofol 300 mg syringe, fentanyl 500 mcg syringe
• Noradrenaline syringe (concentrated 4 mg/50 mL) + backup syringe
• Emergency drugs: adrenaline, atropine, amiodarone, midazolam, rocuronium

Monitors (1 mark):

• Transport monitor with ECG, SpO2, EtCO2, IBP (arterial line)
• All alarms set appropriately
• Verify battery >80%

Electrics (1 mark):

• Transport ventilator capable of high PEEP (≥14), high FiO2
• Verify ventilator battery charged
• Syringe pump batteries charged
• Defibrillator present and charged

Verify/Documentation (1.5 marks):

• Receiving ECMO centre contacted and bed confirmed
• All imaging transferred electronically
• Blood results, cross-match status documented
• Family notified of transfer and destination contact
• Handover documentation prepared

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Question 1.2 (6 marks)

Oxygen Calculation (3 marks):

Patient Requirements:

• Current: FiO2 0.9, MV ~12 L/min (RR 28, estimated VT 430 mL)
• O2 consumption = 0.9 × 12 = 10.8 L/min

Transport Duration:

• Expected: 90 minutes
• With delays: 135 minutes (50% safety margin)

Oxygen Needed:

• 10.8 L/min × 135 min = 1,458 L

Equipment Selection:

• 2 × E cylinders (1,250 L) = insufficient
• 1 × G cylinder (5,000 L) = adequate with large reserve
• Or 3 × E cylinders (1,875 L) with backup plan

Contingency Planning (3 marks):

1. Delay contingency: Carry 100% extra O2 (total ~3,000 L available)
2. Clinical deterioration: If FiO2 increases to 1.0, consumption increases - ensure sufficient reserve
3. Equipment failure: Backup manual resuscitator with PEEP valve, second O2 regulator
4. Communication: Contact receiving hospital with ETA, alert if running low
5. Diversion plan: Identify alternate hospitals en route if O2 critical

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Question 1.3 (6 marks)

Patient-Specific Risks and Mitigation:

Respiratory Deterioration (1.5 marks):

• Risk: Severe ARDS with minimal reserve, prone to rapid desaturation
• Mitigation: Pre-transport recruitment maneuver, maintain PEEP throughout, avoid circuit disconnections, deep sedation to prevent coughing/desynchrony

Hemodynamic Instability (1.5 marks):

• Risk: Vasopressor-dependent, high intrathoracic pressures affecting preload
• Mitigation: Arterial line monitoring (continuous BP), noradrenaline backup syringe prepared, fluid bolus available, minimize position changes

Transport Ventilator Limitations (1 mark):

• Risk: May not match ICU ventilator performance at high PEEP/FiO2
• Mitigation: Select advanced transport ventilator (Hamilton T1 or Oxylog 3000+), verify can deliver PEEP 14 and FiO2 0.9, test settings on patient before departure

Equipment Failure (1 mark):

• Risk: Ventilator/monitor battery failure, circuit disconnection
• Mitigation: Verify all batteries >80%, backup BVM ready, all connections secured, spare batteries carried

Line Dislodgement (1 mark):

• Risk: Loss of arterial line, CVC, or ETT during movement
• Mitigation: Secure all lines with tape and tie-downs, drape management, controlled patient transfers with adequate personnel

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Common Mistakes:

• Underestimating oxygen requirements (not accounting for transport ventilator consumption)
• Selecting basic transport ventilator incapable of high PEEP
• Not preparing backup vasopressor syringe
• Inadequate sedation leading to dyssynchrony during transport

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SAQ 2: Altitude Physiology

Time Allocation: 10 minutes Total Marks: 20

Stem: A 62-year-old male with traumatic brain injury (GCS 8T), intubated and ventilated, requires urgent transfer from a remote hospital to a neurosurgical centre. The transfer will be by fixed-wing aircraft (King Air B200) with a flight time of 3 hours at cruising altitude 25,000 ft (cabin altitude 8,000 ft).

• ICP 18 mmHg, CPP 68 mmHg
• Ventilator: VC-CMV, VT 480 mL, RR 14, PEEP 5, FiO2 0.35
• ABG (sea level): pH 7.42, PaCO2 36, PaO2 95

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Question 2.1 (8 marks)

Describe the physiological effects of altitude on this patient and how you would prepare for the flight.

Question 2.2 (6 marks)

What equipment modifications and checks are required specifically for this aeromedical transfer?

Question 2.3 (6 marks)

During flight at cabin altitude 8,000 ft, the patient's SpO2 drops from 98% to 92%. Outline your assessment and management.

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Model Answer

Question 2.1 (8 marks)

Altitude Physiological Effects:

Hypoxia (Dalton's Law) (2 marks):

• At 8,000 ft cabin altitude: Atmospheric pressure 565 mmHg (vs 760 mmHg sea level)
• Equivalent FiO2 at sea level: 0.21 × (565/760) = 0.156
• Patient on FiO2 0.35: Effective FiO2 = 0.35 × (565/760) = 0.26
• Expected PaO2 drop: From 95 mmHg to ~60-70 mmHg
• Preparation: Increase FiO2 to 0.5 before flight to maintain PaO2 >80 mmHg

Gas Expansion (Boyle's Law) (2 marks):

• Volume increases 35% at 8,000 ft
• ETT cuff: Air-filled cuff will expand → tracheal mucosal ischemia
  • "Preparation: Fill cuff with saline instead of air, or monitor/adjust cuff pressure in flight"
• Pneumocephalus: Any intracranial air will expand → increased ICP
  • "Preparation: Review CT for pneumocephalus, request lower cabin altitude if present"
• Bowel gas: Abdominal distension may elevate diaphragm, impair ventilation
  • "Preparation: Insert NG tube, aspirate before flight"

Cerebral Effects (2 marks):

• Hypoxia at altitude can worsen secondary brain injury
• Cabin pressure changes may affect ICP
• Preparation: Target PaO2 >80 mmHg, PaCO2 35-40 mmHg (avoid hyperventilation)
• Maintain adequate sedation to prevent coughing/straining

Flight-Specific Preparations (2 marks):

1. Request low cabin altitude if possible (6,000 ft or sea-level if available)
2. Increase FiO2 prophylactically
3. Replace air with saline in ETT cuff
4. NG tube to decompress stomach
5. Verify ICP monitoring functional
6. Prepare mannitol in case of ICP rise
7. Deep sedation to prevent coughing/movement

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Question 2.2 (6 marks)

Equipment Modifications and Checks:

Ventilator (1.5 marks):

• Verify transport ventilator has altitude compensation (automatic or manual)
• At altitude, tidal volumes may increase due to expansion - monitor plateau pressure
• Hamilton T1: Automatic barometric compensation
• Oxylog: May require manual adjustment

ETT Cuff (1 mark):

• Replace air with saline or
• Check cuff pressure immediately after reaching altitude and every 30 min
• Carry cuff manometer

ICP Monitor (1 mark):

• Verify transducer zeroed at altitude (transducer must be re-zeroed if cabin pressure changes significantly)
• External ventricular drain: Set overflow height in cmH2O (not affected by altitude)
• Fiberoptic ICP: Verify calibration

Oxygen Supply (1 mark):

• Higher FiO2 requirements at altitude = increased consumption
• Calculate with altitude correction factor 1.3
• 3-hour flight at increased FiO2 0.5: Need significantly more O2

Infusion Pumps (1 mark):

• Altitude pressure changes can affect syringe pump accuracy
• Air bubbles may form in lines due to dissolved gas release
• Pre-prime lines carefully, check for bubbles before flight

Monitoring (0.5 marks):

• Verify all monitors functional at altitude
• NIBP may be less accurate - rely on arterial line

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Question 2.3 (6 marks)

Assessment of Desaturation at Altitude:

Immediate Actions (1 mark):

• Increase FiO2 to 1.0 immediately
• Verify ventilator functioning (tidal volume, rate)
• Check SpO2 probe position and waveform quality

Systematic Assessment (DOPE) (2 marks):

• Displacement: Auscultate for bilateral breath sounds, check ETT position at teeth
• Obstruction: Suction ETT, check for secretions, kinking
• Pneumothorax: Auscultate, percuss, check for tracheal deviation (may be worsening at altitude due to gas expansion)
• Equipment: Check ventilator circuit, O2 supply, connections

Altitude-Specific Considerations (1.5 marks):

• Is this expected altitude-related hypoxia? (Dalton's law - less O2 available)
• Has a small pneumothorax expanded at altitude?
• Is there worsening pulmonary edema from hypoxia?

Management Based on Findings (1.5 marks):

If altitude-related hypoxia (expected):

• Maintain FiO2 1.0, accept SpO2 92% if stable
• Request pilot descend to lower cabin altitude if possible
• Prepare for landing if severe (divert if necessary)

If pneumothorax suspected:

• Needle decompression or finger thoracostomy immediately
• Request emergency descent
• Prepare chest tube on landing

If equipment failure:

• Manual ventilation with BVM + PEEP valve
• FiO2 1.0 from oxygen supply
• Troubleshoot ventilator

If secretions/obstruction:

• Suction ETT
• Consider bronchodilators if bronchospasm

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Common Mistakes:

• Not anticipating altitude-related hypoxia (predictable and preventable)
• Forgetting ETT cuff expansion
• Not checking for pneumocephalus in TBI patients before flight
• Failing to request lower cabin altitude when indicated

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Viva Scenarios

Viva 1: Transport Equipment Selection

Duration: 12 minutes (2 min reading + 10 min discussion)

Stem: "You are the ICU consultant asked to advise on equipment requirements for a new aeromedical retrieval service being established in your region. The service will use rotary-wing aircraft (helicopter) for missions up to 200 km and fixed-wing for longer distances."

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Opening Question:

"What are the key considerations when selecting a transport ventilator for this service?"

Expected Answer (3 minutes):

Patient Population Requirements:

• Adult and potentially paediatric capability (VT range 50-2000 mL, or 2-300 mL for paediatric-specific)
• ARDS-capable: High PEEP (≥20 cmH2O), high FiO2, lung-protective settings
• NIV capability for selected patients

Environmental Requirements:

• Turbine-driven (not requiring compressed air source)
• Altitude compensation (automatic preferred)
• Vibration/shock resistant (military-grade standards)
• Temperature range: -10°C to +50°C operating
• Noise considerations (displays readable)

Operational Requirements:

• Battery life: Minimum 4 hours (preferably 8+) for long missions
• Weight: <8 kg (aircraft weight limitations)
• Size: Compatible with stretcher mounting system
• Quick setup and intuitive interface
• Robust alarms (audible over aircraft noise)

Clinical Features:

• Waveform graphics for dyssynchrony detection
• Modes: VC, PC, PRVC, SIMV, PSV minimum
• Auto-triggering resistance
• Capnography integration (preferred)

Recommended Options:

• Hamilton T1: Excellent modes, ASV, long battery, but expensive
• Oxylog 3000+: Military-grade durability, widely used in retrieval
• LTV 1200: Long battery, cost-effective, but basic display

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Follow-up Question 1:

"What monitoring equipment would you recommend?"

Expected Answer:

Essential Monitoring:

• Multiparameter transport monitor with:
  • ECG (3-lead minimum, 12-lead capability for cardiac)
  • SpO2 with waveform
  • NIBP
  • Capnography (mainstream or sidestream)
  • Temperature
  • 2 invasive pressure channels (arterial, CVP)

Monitor Selection Criteria:

• Battery: 6+ hours
• Rugged design: MIL-STD or IP54 rated
• Screen: High brightness, sunlight-readable
• Audible alarms: Adjustable volume, headset integration
• Data storage: Trend recording, download capability
• Integration: Bluetooth/cellular for telemetry to base

Integrated Defibrillator Consideration:

• Some services use monitor-defibrillator combo (Zoll Propaq MD, Corpuls3)
• Advantages: Single device, CPR feedback
• Disadvantages: If defibrillator fails, lose monitoring

Recommended: Philips MX800 or Zoll Propaq MD for integrated capability; separate defibrillator (Zoll X Series) for redundancy.

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Follow-up Question 2:

"How would you calculate oxygen requirements for a typical mission?"

Expected Answer:

Oxygen Calculation Steps:

1. Estimate oxygen consumption:

   • Ventilator O2 = Minute volume × FiO2
   • Example: MV 10 L/min × FiO2 0.6 = 6 L/min

2. Determine transport duration:

   • Flight time + ground components + contingency
   • Example: 2-hour flight + 30 min ground = 150 min

3. Apply safety margin:

   • Standard: 50-100% buffer
   • 150 min × 1.5 = 225 minutes

4. Calculate total O2 needed:

   • 6 L/min × 225 min = 1,350 L

5. Select supply:

   • E cylinders (625 L): Need 3 cylinders
   • G cylinder (5,000 L): 1 sufficient with large reserve
   • Consider aircraft LOX system for long-duration fixed-wing

Altitude Correction:

• At altitude, ventilator consumes more O2 to deliver same FiO2
• Apply factor 1.2-1.3 for cabin altitude 8,000 ft

Contingency: Always carry backup supply; identify diversion hospitals en route.

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Follow-up Question 3:

"What training would you recommend for retrieval clinicians regarding equipment?"

Expected Answer:

Initial Training:

• Transport medicine/retrieval course (e.g., EMRS, MIMMS, ATSB CRM)
• Equipment-specific competencies:
  • Transport ventilator operation, troubleshooting, modes
  • Monitor setup, alarm management
  • Syringe pump programming, anti-siphon awareness
  • Defibrillator use, maintenance checks
• Aeromedical physiology (altitude effects)
• Human factors in transport environment

Ongoing Competency:

• Regular simulation-based training (quarterly)
• Equipment checks at start of each shift
• Annual competency assessments
• Manufacturer updates/training for new equipment

Specific Skills:

• Pre-flight equipment checks (standardized checklist)
• In-flight troubleshooting algorithms
• Battery and O2 failure management
• Manual ventilation as backup
• Communication with pilots regarding medical emergencies

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Viva 2: In-Transit Emergency

Duration: 12 minutes (2 min reading + 10 min discussion)

Stem: "You are accompanying a 55-year-old female with septic shock during a ground ambulance transfer between hospitals. She has been intubated, is receiving noradrenaline 25 mcg/min, and has been stable. Forty-five minutes into the 90-minute journey, the nurse alerts you that the patient's blood pressure has dropped from 95/60 to 65/40 mmHg despite increasing noradrenaline to 40 mcg/min. The SpO2 is 88% (previously 96%)."

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Opening Question:

"What is your immediate assessment and differential diagnosis?"

Expected Answer (2 minutes):

Immediate Assessment (30 seconds):

• Verify airway: Listen for breath sounds, check ETT position
• Check ventilator: Functioning, circuit intact, alarms?
• Check monitors: SpO2 waveform quality, arterial line trace?
• Check infusions: Noradrenaline running? Line patent?

Differential Diagnosis (Systematic):

Respiratory:

• Pneumothorax (tension) - most critical
• ETT displacement/obstruction
• Ventilator malfunction
• Pulmonary embolism

Cardiovascular:

• Progression of septic shock
• Arrhythmia (new AF, VT)
• Cardiac tamponade
• Massive PE
• Infusion interruption (noradrenaline stopped)

Equipment-Related:

• Line disconnection
• Syringe pump failure
• Monitor malfunction (false reading)

Other:

• Anaphylaxis (drug reaction)
• Hemorrhage (occult bleeding source)
• Adrenal insufficiency

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Follow-up Question 1:

"You auscultate the chest and find absent breath sounds on the left with tracheal deviation to the right. What is your diagnosis and immediate management?"

Expected Answer:

Diagnosis: Tension pneumothorax (left)

Immediate Management:

1. Stop the ambulance (if safe) to allow procedures

2. Increase FiO2 to 1.0

3. Needle thoracocentesis (if finger thoracostomy not immediately possible):

   • Location: 2nd intercostal space, midclavicular line, left
   • Large-bore cannula (14G or larger)
   • Expect rush of air

4. Finger thoracostomy (preferred in transport if trained):

   • 5th intercostal space, anterior axillary line
   • Incision, blunt dissection, finger into pleural space
   • Leave open or insert chest tube if available

5. Reassess:

   • Expect BP improvement within 60 seconds
   • Breath sounds should improve
   • SpO2 should recover

6. Communicate:

   • Alert receiving hospital
   • Request chest tube insertion capability on arrival
   • Continue transport once stabilized

7. Document:

   • Time of event, findings, intervention, response

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Follow-up Question 2:

"In retrospect, how might this complication have been prevented or anticipated?"

Expected Answer:

Pre-Transport Considerations:

• Was there any CXR abnormality before departure?
• Patients with sepsis may have underlying pneumonia, bullous disease
• Central line insertion on same side - was there post-procedure CXR?

Risk Factors for Transport Pneumothorax:

• High PEEP/peak pressures
• Barotrauma history
• ARDS, pneumonia
• Recent central line insertion
• CPR history
• Positive pressure ventilation

Prevention Strategies:

1. Review pre-transport CXR carefully for pneumothorax, bullae
2. If high-risk, prophylactic chest tube consideration
3. During transport: Monitor for early signs (increasing peak pressures, falling SpO2)
4. Lower threshold for chest decompression in transport environment
5. Ensure thoracostomy equipment immediately accessible (not in separate bag)

Equipment Preparedness:

• Needle decompression kit should be immediately accessible
• Chest tube kit in transport bag
• Finger thoracostomy training for all retrieval clinicians

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Follow-up Question 3:

"What other transport-related emergencies should retrieval teams be prepared for, and how?"

Expected Answer:

Respiratory Emergencies:

• ETT dislodgement: Backup airway equipment immediately accessible; BVM ready
• Bronchospasm: Bronchodilators in drug kit; MDI with spacer adapter
• Ventilator failure: Practice manual ventilation; backup BVM with PEEP

Cardiovascular Emergencies:

• Cardiac arrest: Defibrillator charged; plan for resuscitation in confined space
• Arrhythmia: Antiarrhythmics available; external pacing capability
• Infusion failure: Backup syringe prepared; push-dose vasopressors (phenylephrine/adrenaline)

Airway Emergencies:

• Failed intubation: LMA, bougie, surgical airway kit
• Cuff leak: Spare ETT, intubation equipment

Equipment Failures:

• Power failure: Backup batteries; manual alternatives (BVM, manual BP)
• Oxygen depletion: Calculation margin; diversion plan
• Monitor failure: Clinical assessment skills; arterial line for BP

Communication Plan:

• Contact retrieval coordination/medical consultant for advice
• Know diversion hospital options and capabilities
• Clear handover if patient arrives unstable