Paeds SAQs · acute-care-resuscitation-and-toxicology
Retrieval, transport and interfacility stabilisation — formative SAQs
Two MedVellum formative short-answer questions on moving a critically ill child between facilities: bringing intensive care to the child before departure, completing the airway, breathing and circulation work at the referring hospital, managing the hostile physics of altitude, vibration and cold, choosing the right mode and escort, and running a structured referral, handover and contingency. The marks and timing support transparent self-assessment. They are not an official board format or pass standard.
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Target exams
SAQ 1 — A septic infant in a regional hospital
Question 1 — 10 formative marks; suggested time 15 minutes [1]
A four-month-old is in a regional emergency department with suspected meningococcal sepsis. Despite 40 mL per kilogram of balanced crystalloid, the heart rate is 180, the capillary refill is 5 seconds, the blood pressure is low-normal, and the lactate is rising. The nearest paediatric intensive care unit is a 90-minute rotary-wing retrieval away, and the team has just been called. [1]
- State the retrieval principle that governs the decision to move this child now or to wait, and apply it to this infant. (2 marks)
- Itemise the pre-transport stabilisation you complete before the trolley moves. (4 marks)
- Describe the structured referral you give to the retrieval service. (2 marks)
- State your contingency for deterioration during the journey. (2 marks) [2]
Full-credit answer — SAQ 1
Reveal full-credit answer for SAQ 1
1. The retrieval principle
The governing principle is stay and stabilise, then move: bring intensive care to the child and then move the child through it. This infant is still on the ascending limb of resuscitation, with rising lactate and poor perfusion despite fluid, so he is not yet stable to transport. I continue resuscitation to a sustained perfusion trend, start vasoactive drugs, and secure the airway and ventilation before departure. A child who departs unstable arrives worse. [1] [4]
2. Pre-transport stabilisation
Airway. I secure the airway by rapid sequence intubation because shock, rising lactate and a likely meningococcal presentation predict respiratory failure; I confirm the tube with capnography and fix it firmly, checking cuff pressure because cuff gas expands at altitude. [1] [10]
Breathing. I set the ventilator to effective tidal volume and oxygenation, confirm an oxygen supply that covers the 90-minute flight plus a reserve margin, drain any pneumothorax before flight, and decompress the stomach. [10] [4]
Circulation. I establish two reliable points of access with at least one that takes rapid fluid, start a vasoactive infusion on a dedicated line, crossmatch blood, and continue aliquots to a sustained perfusion trend rather than a single blood pressure. [4] [8]
Disability and metabolic. I treat any seizure, correct glucose, record the Glasgow Coma Scale and pupils, and check the temperature; I warm the infant actively because a cold cabin will drive hypothermia and worsen shock and coagulopathy. [2] [8]
3. The structured referral
I give a structured referral using a standardised format: the identity, age and a working weight; the working diagnosis and current physiology; the actions taken and the response (40 mL per kilogram given, lactate rising, vasoactive drugs started); the local limit (no paediatric intensive care); what the child needs next (intensive-care retrieval to the paediatric ICU); and the safeguarding and family context. I confirm the receiving bed and the accepting consultant before departure. [6] [1]
4. Contingency for deterioration
I rehearse, with the escort team, who does what if the infant obstructs, desaturates, becomes hypotensive, seizes or loses a line in flight. I carry the drugs, the airway equipment and the fluid and blood to manage each, and I know where the journey can be interrupted if needed. The rehearsed plan turns an in-flight emergency into a managed event rather than a crisis. [2] [4]
SAQ 2 — The ventilated trauma child about to fly
Question 2 — 10 formative marks; suggested time 15 minutes [4]
A nine-year-old with a splenic injury and a presumed small left pneumothorax after a fall is intubated and ventilated in a regional hospital. The retrieval team will fly her by rotary-wing aircraft to the paediatric trauma centre. The cabin is not yet warmed. [4]
- Explain the physics by which altitude threatens this child, and state what you do about the pneumothorax and the endotracheal tube cuff before flight. (3 marks)
- Explain why vibration, noise and cold each matter, and what you do about them. (3 marks)
- Justify the choice of rotary-wing transport and the escort for this child. (2 marks)
- Give the structured handover you deliver at the receiving door. (2 marks) [6]
Full-credit answer — SAQ 2
Reveal full-credit answer for SAQ 2
1. Altitude physics and its fixes
Gas expands by Boyle's law as ambient pressure falls with altitude. At a typical pressurised cabin altitude of around 6000 to 8000 feet a trapped gas volume expands by up to about a third. A presumed pneumothorax can therefore become a tension pneumothorax in the cabin, so I drain it before flight and carry a plan to decompress in flight if needed. The cuff of the endotracheal tube also expands at altitude and can injure the tracheal mucosa, so I check the cuff pressure before departure and adjust it, with a plan to recheck it in flight. [4] [8]
2. Vibration, noise and cold
Vibration and noise jitter the waveforms, make alarms hard to hear over the engine, and make clinical signs hard to elicit, so I trust continuous monitored data — capnography, pulse oximetry and a credible blood pressure — and secure the child and every line before departure, because reassessment in flight is far less reliable than at the bedside. Cold steals heat quickly from a small body and worsens acidosis, coagulopathy and oxygen consumption, so I pre-warm the cabin, cover and wrap the child, use forced-air or exothermic warming, and monitor temperature throughout. Keeping the child warm is a resuscitation act, not a comfort measure. [2] [8]
3. Mode and escort
Rotary-wing transport is justified for a medium-distance, time-sensitive transfer where the speed gain over road outweighs the limitations of weather, cabin size, vibration and range. I escort the child with a specialist paediatric retrieval team that can manage the foreseeable deterioration — re-intubation, decompression, fluid and blood, vasoactive escalation — because matching the escort's skills to the child's needs is the key safety factor, more than the choice of vehicle. [1] [4]
4. Structured handover
I give a structured ISBAR or ISOBAR handover at the receiving door: identity and working weight; the diagnosis and current physiology; the actions taken and the response, including the units of fluid and blood given; the current ventilator and vasoactive settings; the timed events and any unresolved threat; the family and safeguarding context; and the next contingency with a named owner. I confirm acceptance of care and close the loop. [6] [1]
References
- [1]Stroud, Matthew H Pediatric and neonatal interfacility transport: results from a national consensus conference Pediatrics, 2013.PMID 23821698
- [2]Haydar, Sarah Adverse Events During Intrahospital Transport of Critically Ill Children: A Systematic Review Anesthesia and analgesia, 2020.PMID 32925334
- [4]Wilcox, Sarah R Interfacility Transport of Critically Ill Patients Critical care medicine, 2022.PMID 36106970
- [6]Thirnbeck, Catherine K Interfacility Referral Communication for PICU Transfer Pediatric critical care medicine, 2024.PMID 38483193
- [8]Noje, Carolin Consensus on Neonatal and Pediatric Interfacility Transport Air medical journal, 2026.PMID 42331499
- [10]Hutton, Heather Noninvasive Respiratory Support during Pediatric Critical Care Transport: A Retrospective Cohort Study Journal of pediatric intensive care, 2024.PMID 39629146