Postpartum Hemorrhage (PPH)

Overview

Postpartum hemorrhage (PPH) is excessive bleeding following childbirth and remains the leading cause of maternal mortality worldwide, accounting for approximately 27% of maternal deaths globally. [1] Despite advances in obstetric care, PPH incidence has increased in high-resource settings over the past two decades, primarily due to rising rates of cesarean delivery, advanced maternal age, and multiple gestation. [2,3]

The critical importance of PPH lies in its unpredictability—while certain risk factors increase susceptibility, approximately 40% of cases occur in women with no identifiable risk factors. [4] Early recognition, systematic assessment using the "4 Ts" framework, and prompt evidence-based intervention are essential to prevent progression to severe maternal morbidity and mortality.

Modern PPH management emphasizes quantitative blood loss measurement, early administration of tranexamic acid within 3 hours of delivery, stepwise uterotonic escalation, and rapid activation of massive transfusion protocols when indicated. [5,6]

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Definition and Classification

Modern Definition

Traditional Definition:

• ≥500 mL blood loss after vaginal delivery
• ≥1000 mL blood loss after cesarean section

Revised Definition (WHO 2012, ACOG 2017): PPH is now defined as cumulative blood loss ≥1000 mL OR blood loss accompanied by signs or symptoms of hypovolemia within 24 hours after delivery, regardless of route. [7,8]

This revision reflects evidence that:

• Average blood loss at cesarean delivery approximates 1000 mL
• Visual estimation underestimates blood loss by 30-50%
• Clinical signs may appear before traditional thresholds are met
• Quantitative blood loss (QBL) measurement improves accuracy [9]

Severity Classification

Temporal Classification

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Epidemiology

Incidence and Prevalence

Mortality Statistics

• Global maternal deaths from PPH: ~70,000 annually (27% of all maternal deaths) [1]
• Case-fatality rate (high-resource): 0.1-1 per 100,000 deliveries [12]
• Case-fatality rate (low-resource): 1-100 per 100,000 deliveries [1]
• Deaths within 4 hours: 50% of PPH-related deaths occur within 4 hours of delivery [13]

Temporal Trends

High-resource countries have documented a 26% increase in PPH incidence from 1995 to 2015, attributed to: [2,10]

• Rising cesarean delivery rates (protective effect of uterine incision absent)
• Increased maternal age and obesity
• Greater use of labor induction/augmentation
• Multiple gestation from assisted reproductive technology
• Improved surveillance and reporting (quantitative blood loss)

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Etiology: The 4 T's Framework

The "4 Ts" mnemonic provides a systematic approach to identifying PPH causes. Multiple etiologies may coexist. [14]

1. TONE (Uterine Atony) — 70-80% of Cases

Definition: Failure of the myometrium to contract adequately after delivery, preventing physiologic hemostasis at the placental site.

Mechanism: The placental bed contains 60-80 spiral arteries with blood flow of 600-800 mL/min at term. Myometrial contraction ("living ligature") compresses vessels; inadequate contraction leads to hemorrhage. [15]

Risk Factors:

Clinical Recognition:

• Boggy, enlarged uterus palpable above the umbilicus
• Persistent bright red vaginal bleeding
• Uterus becomes firm with massage but relaxes when released

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2. TRAUMA — 15-20% of Cases

Types of Traumatic PPH:

Genital Tract Lacerations

Uterine Rupture

• Incidence: 0.3-0.7% of all deliveries; 0.5-1% in TOLAC (trial of labor after cesarean) [16]
• Risk factors: Prior uterine surgery, obstructed labor, inappropriate oxytocin use, trauma
• Presentation: Sudden severe pain, loss of station, fetal heart rate abnormalities, maternal shock disproportionate to visible bleeding
• Diagnosis: Often intraoperative finding; requires high index of suspicion

Uterine Inversion

• Incidence: 1 in 2,000-20,000 deliveries [17]
• Classification:
  • "Complete: Fundus protrudes through cervix into vagina"
  • "Incomplete: Fundus inverts but does not pass through cervix"
  • "Partial: Fundal indentation without complete inversion"
• Etiology: Excessive cord traction with fundal pressure, fundal placentation
• Presentation: Profound vasovagal shock (neurogenic + hemorrhagic), fundus not palpable abdominally, visible/palpable fundus at cervix

Hematomas

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3. TISSUE (Retained Products) — 5-10% of Cases

Retained Placenta

• Definition: Placenta undelivered 30 minutes after birth (with active management of third stage) [18]
• Incidence: 2-3% of vaginal deliveries
• Types:
  • "Adherent placenta: Failed separation (placenta accreta spectrum)"
  • "Trapped placenta: Separated but retained by closed cervix"
  • "Partial retention: Retained cotyledon or succenturiate lobe"

Placenta Accreta Spectrum (PAS)

• Overall incidence: 1 in 272-533 deliveries (rising due to increasing cesarean rates) [19]
• Risk factors: Prior cesarean delivery (strongest), placenta previa, advanced maternal age, prior uterine surgery
• Antenatal diagnosis: Ultrasound (loss of clear zone, placental lacunae, bladder wall irregularity); MRI for posterior placenta or depth assessment

Retained Blood Clots

• Large clots occupy uterine cavity, preventing effective contraction
• Uterus typically becomes firm after manual removal or curettage

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4. THROMBIN (Coagulopathy) — less than 1% Primary Cause, More Common as Secondary Factor

Pre-existing Coagulopathies

Acquired Coagulopathies

Iatrogenic/Therapeutic Anticoagulation

• Low molecular weight heparin (LMWH) for thromboprophylaxis
• Therapeutic anticoagulation for prosthetic valves, thrombophilia
• Timing of last dose critical for neuraxial anesthesia and bleeding risk

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Risk Factors and Risk Stratification

Major Risk Factors (OR > 3) [20]

• Prior postpartum hemorrhage (OR 3.4-5.0)
• Placenta previa (OR 12-13)
• Placenta accreta spectrum (OR 8-10)
• Multiple gestation (OR 2.8-4.3)
• Polyhydramnios (OR 3.8)
• Macrosomia > 4500g (OR 3.0)

Moderate Risk Factors (OR 1.5-3)

• Nulliparity or grand multiparity (≥5)
• Advanced maternal age (> 40 years)
• Obesity (BMI > 35)
• Prolonged labor (> 18 hours)
• Chorioamnionitis
• Labor induction/augmentation

Clinical Implication

Important: 40% of PPH cases occur in women with NO identifiable risk factors. [4] Therefore:

• All deliveries require PPH preparedness
• Active management of third stage recommended universally
• Quantitative blood loss measurement for all deliveries
• Team training on PPH protocols essential

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Clinical Presentation and Assessment

Early Recognition of PPH

Compensated Shock (10-15% Blood Loss)

• Tachycardia: HR > 100 bpm (earliest and most sensitive sign)
• Narrowed pulse pressure
• Anxiety, restlessness
• Cool, clammy extremities
• Delayed capillary refill (> 3 seconds)
• Normal or slightly elevated blood pressure (compensatory vasoconstriction)

Decompensated Shock (> 30-40% Blood Loss)

• Hypotension: SBP less than 90 mmHg (indicates > 1500-2000 mL loss)
• Tachycardia > 120 bpm
• Altered mental status, confusion
• Oliguria (less than 30 mL/hour)
• Weak, thready pulse
• Profound pallor

Shock Index in Obstetrics

Calculation: Shock Index (SI) = Heart Rate ÷ Systolic Blood Pressure

Evidence: SI > 0.9 has 71% sensitivity and 77% specificity for predicting need for blood transfusion. [21]

Quantitative Blood Loss (QBL) Measurement

Methods: [9]

1. Graduated under-buttocks drapes: Collect and measure pooled blood
2. Weighing blood-soaked materials:
   • 1 gram = 1 mL blood
   • Subtract known dry weight of sponges/pads
3. Suction canisters: Measure collected blood minus irrigation fluid
4. Combined approach: Most accurate; recommended by ACOG/RCOG [8,22]

Reference Values:

Impact: Implementation of QBL reduces severe maternal morbidity by 27-40% compared to visual estimation. [9]

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Systematic Physical Examination

ABCDE Assessment for Acute PPH

A - Airway

• Assess patency
• Prepare for potential intubation if severe shock/altered consciousness

B - Breathing

• Respiratory rate (tachypnea indicates shock)
• Oxygen saturation
• Administer high-flow oxygen if Sp02 less than 95%

C - Circulation

• Vital signs: Heart rate, blood pressure, capillary refill
• IV access: Two large-bore cannulas (16-18G)
• Fluid resuscitation: Crystalloid bolus while awaiting blood products
• Blood samples: CBC, type & crossmatch (6+ units), coagulation studies

D - Disability

• Level of consciousness (AVPU or GCS)
• Altered mentation suggests severe hypovolemia

E - Exposure and Examination

• Quantify blood loss: QBL measurement
• Identify source: Systematic examination per 4 Ts

The "4 Ts" Physical Examination

Assess TONE

Uterine Palpation:

• Firm, contracted uterus at or below umbilicus: Normal tone
• Boggy, enlarged uterus above umbilicus: Atony (most common finding)
• Uterus not palpable abdominally: Consider inversion or rupture

Immediate intervention for atony:

• Bimanual uterine compression and massage
• Empty bladder (catheterize)
• Administer uterotonics

Assess TRAUMA

Inspection sequence:

1. Perineum: Identify degree of laceration (1st-4th degree)
2. Vaginal walls: Speculum examination for sulcus tears, hematomas
3. Cervix: Visualize entire circumference; lacerations typically at 3/9 o'clock
4. Uterus: Bimanual exam for tenderness, boggy mass (hematoma), or absence (inversion)

Key point: Bleeding with a firm, well-contracted uterus suggests trauma.

Assess TISSUE

Placental examination:

• Inspect for completeness (all cotyledons present, intact membranes)
• Look for succenturiate lobe: vessels running to edge of membranes
• If incomplete, manual exploration or ultrasound assessment

Manual exploration indications:

• Suspected retained products
• Ongoing bleeding despite uterine contractility
• Suspected uterine rupture

Assess THROMBIN

Bedside clot test:

• Place 5-10 mL blood in red-top tube (or glass test tube)
• Normal: Clot forms within 7-10 minutes and remains stable
• Coagulopathy: No clot, or clot forms then lyses

Clinical signs of coagulopathy:

• Blood not clotting on swabs/pads
• Oozing from IV sites, venipuncture sites
• Petechiae, ecchymosis
• Bleeding from mucous membranes

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Red Flags: Life-Threatening Presentations

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Differential Diagnosis

While PPH is a clinical diagnosis (excessive bleeding after delivery), the differential focuses on identifying the specific etiology using the 4 Ts framework.

Distinguishing Uterine Atony from Other Causes

Special Diagnostic Considerations

Concealed Bleeding:

• Broad ligament hematoma
• Retroperitoneal hemorrhage
• Intraperitoneal bleeding from uterine rupture

Presentation: Shock disproportionate to visible blood loss, abdominal distension, flank/back pain

Diagnosis: CT imaging (if stable), laparotomy (if unstable)

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Investigations

Initial Laboratory Studies (STAT)

Key point: Fibrinogen less than 200 mg/dL independently predicts progression to severe PPH and need for massive transfusion. [23]

Point-of-Care Testing

Thromboelastography (TEG) / Rotational Thromboelastometry (ROTEM)

• Real-time assessment of clot formation, strength, and lysis
• Guides targeted blood product replacement:
  • "Prolonged R/CT time: FFP needed"
  • "Low alpha angle: Fibrinogen deficiency (cryoprecipitate)"
  • "Low MA/MCF: Platelet dysfunction (platelet transfusion)"
  • "Increased LY30: Hyperfibrinolysis (tranexamic acid)"

Bedside Clot Test (if TEG/ROTEM unavailable)

• Described above; crude but helpful in resource-limited settings

Imaging

Ultrasonography:

• Indication: Suspected retained products of conception
• Findings: Heterogeneous endometrial collection > 15 mm
• Sensitivity/Specificity: Moderate; correlation with clinical findings essential

CT Angiography:

• Indication: Hemodynamically stable patient with suspected retroperitoneal/intraperitoneal bleeding, or pre-interventional radiology planning
• Findings: Active extravasation, hematoma, vascular injury

MRI:

• Indication: Rarely used acutely; antenatal diagnosis of placenta accreta spectrum

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Management

Immediate Response Algorithm

PPH Recognized (≥1000 mL or clinical signs of shock)
                    ↓
┌───────────────────────────────────────────────────┐
│ STEP 1: CALL FOR HELP - Activate PPH Protocol    │
│ • Senior obstetrician                             │
│ • Senior anesthetist                              │
│ • Blood bank (notify massive transfusion)        │
│ • Operating room team (standby)                   │
│ • Additional nursing/midwifery support           │
└───────────────────────────────────────────────────┘
                    ↓
┌───────────────────────────────────────────────────┐
│ STEP 2: RESUSCITATION (Simultaneous with Steps 3-4)│
│ • Two large-bore IV (16-18G)                      │
│ • Crystalloid bolus (1-2L rapidly)               │
│ • High-flow oxygen (SpO2 > 95%)                    │
│ • STAT labs: CBC, coags, fibrinogen, type & cross│
│ • Activate massive transfusion if > 1500 mL loss  │
└───────────────────────────────────────────────────┘
                    ↓
┌───────────────────────────────────────────────────┐
│ STEP 3: IDENTIFY CAUSE - Systematic 4 Ts Exam    │
│ TONE: Palpate uterus - boggy? → Atony           │
│ TRAUMA: Inspect genital tract - laceration?      │
│ TISSUE: Examine placenta - complete?             │
│ THROMBIN: Bedside clot test - coagulopathy?     │
└───────────────────────────────────────────────────┘
                    ↓
┌───────────────────────────────────────────────────┐
│ STEP 4: TREAT CAUSE (see specific sections below)│
│ • Atony: Massage + uterotonics                   │
│ • Trauma: Repair lacerations                     │
│ • Tissue: Manual removal / curettage             │
│ • Thrombin: Targeted blood products              │
│ • ALL CASES: Consider TXA within 3 hours         │
└───────────────────────────────────────────────────┘
                    ↓
       NOT RESPONDING → ESCALATE
                    ↓
┌───────────────────────────────────────────────────┐
│ STEP 5: ADVANCED INTERVENTIONS                   │
│ • Uterine tamponade (Bakri balloon)              │
│ • Surgical: Compression sutures, artery ligation │
│ • Interventional radiology: Embolization         │
│ • Last resort: Hysterectomy                      │
└───────────────────────────────────────────────────┘

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Treatment: Uterine Atony (70-80% of Cases)

First-Line: Uterine Massage

Technique - Bimanual Uterine Compression:

1. External hand: Place on abdomen, grasp uterine fundus through abdominal wall
2. Internal hand: Insert into vagina (sterile glove), place fist against anterior lower uterine segment
3. Compression: Press uterus between two hands, massage fundus in circular motion
4. Duration: Continue until uterus becomes firm (typically 1-3 minutes)

Adjunct: Empty bladder via catheter (distended bladder inhibits uterine contraction)

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Pharmacological Uterotonics

Escalating Protocol:

First-Line: Oxytocin

Contraindications: None absolute Side effects:

• Hypotension (if rapid bolus—AVOID)
• Tachycardia
• Water intoxication (if large volumes of hypotonic fluid)

Evidence: Active management of third stage (prophylactic oxytocin) reduces PPH by 60%. [24]

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Second-Line: Ergometrine (Methylergonovine)

Contraindications:

• Hypertension (SBP > 140/90) or preeclampsia
• Cardiovascular disease (coronary artery disease, valvular disease)
• Peripheral vascular disease (Raynaud's)

Side effects: Nausea/vomiting (common), hypertension, coronary vasospasm

Mechanism: Sustained uterine contraction (tonic) vs. oxytocin (rhythmic)

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Second-Line: Carboprost (15-Methyl-PGF2α)

Contraindications:

• Active asthma or reactive airway disease (bronchoconstriction)
• Hepatic, renal, or cardiac disease (relative contraindications)

Side effects:

• Diarrhea (common)
• Fever, chills
• Bronchospasm (in susceptible patients)
• Oxygen desaturation

Evidence: 87% success rate in controlling atonic PPH unresponsive to oxytocin. [25]

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Second/Third-Line: Misoprostol (Prostaglandin E1 Analog)

Advantages:

• No contraindications (safe in asthma, hypertension)
• Thermostable (useful in low-resource settings)
• Inexpensive

Side effects:

• Fever, shivering (very common at high doses)
• Diarrhea
• Pyrexia may mask infectious etiology

Evidence: WHO recommends 800 mcg sublingual/rectal as alternative when oxytocin unavailable; less effective than injectable uterotonics but superior to placebo. [7]

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Tranexamic Acid (TXA)

THE WOMAN TRIAL (2017) - Landmark Evidence: [6]

Study: 20,060 women with PPH across 21 countries (RCT)

Results:

• Mortality reduction: TXA reduced death from bleeding by 31% (RR 0.69; 95% CI 0.52-0.91)
• Greatest benefit when given less than 3 hours: 31% reduction vs. 21% at 3+ hours
• No increase in thromboembolic events

Dosing Protocol:

Mechanism: Inhibits plasminogen activation → prevents fibrin degradation → stabilizes clot

Contraindications:

• Active thromboembolic disease (DVT/PE)
• History of seizures (high doses may lower seizure threshold; not a concern at obstetric doses)

Current Recommendations:

• WHO (2017): Recommend early TXA for all PPH cases [7]
• ACOG (2019): Consider TXA in addition to uterotonics [8]
• RCOG (2023): Offer TXA as soon as diagnosis of PPH made [22]

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Mechanical/Physical Interventions

Uterine Tamponade (Bakri Balloon or Equivalent)

Indications:

• Atonic PPH unresponsive to uterotonics
• Temporizing measure while preparing for surgery
• Definitive treatment in resource-limited settings

Technique:

1. Ensure cervix is adequately dilated (or may dilate with insertion)
2. Insert balloon catheter through cervix into uterine cavity
3. Inflate with 300-500 mL sterile saline (follow device specifications)
4. Gentle traction on catheter; pack vagina with gauze to prevent expulsion
5. Connect drainage port to quantify ongoing blood loss
6. Maintain uterotonic infusion
7. Remove after 12-24 hours (deflate gradually)

Success rate: 85-90% in controlling atonic hemorrhage [26]

Contraindications: Suspected uterine rupture, infection

Alternatives: Condom catheter tied to Foley catheter (low-resource settings)

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Treatment: Trauma

Genital Tract Laceration Repair

Principles:

• Adequate anesthesia (regional or general)
• Good visualization (lighting, retraction, assistants)
• Hemostasis before closure

Cervical Lacerations:

• Ring forceps to grasp cervix, visualize entire circumference
• Repair: Absorbable suture (2-0 or 0 Vicryl), figure-of-eight or continuous locking, extending 0.5-1 cm above apex

Vaginal Lacerations:

• Identify apex, repair from top to bottom
• Deep sulcus tears may require layered closure

Perineal Lacerations:

• Classify degree (1st-4th)
• Third/fourth degree: Rectal sphincter repair requires specialized technique (end-to-end or overlapping), separate rectal mucosa closure

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Uterine Inversion Management

Immediate Manual Replacement (Johnson Maneuver):

1. Stop all uterotonics immediately (need uterine relaxation)
2. Do NOT remove placenta if still attached (increases bleeding)
3. Apply steady upward pressure on inverted fundus with fist/palm, directing toward posterior fornix
4. Push fundus through cervix back into abdominal cavity
5. Consider uterine relaxants: terbutaline 0.25 mg SC, nitroglycerin 50-100 mcg IV, or general anesthesia
6. Once repositioned, immediately give uterotonics to maintain contraction
7. Keep hand in situ for several minutes to prevent recurrence

Surgical Options (if manual fails):

• Huntington procedure (vaginal): Gradual traction on round ligaments with Allis clamps
• Haultain procedure (abdominal): Incise posterior constriction ring, reposition, repair

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Hematoma Management

Small vulvar/vaginal hematomas (less than 5 cm, stable):

• Observation, ice packs, analgesia
• Monitor vital signs

Expanding or large hematomas:

• Incision and drainage under anesthesia
• Evacuate clot
• Ligate bleeding vessels (often no single identifiable bleeder; may need layered closure with suture ligation of tissue pedicles)
• Drain placement sometimes utilized
• Pelvic packing if diffuse ooze

Retroperitoneal hematomas:

• Multidisciplinary approach: obstetrics, general surgery, interventional radiology
• Interventional radiology: Angiography + embolization if stable
• Laparotomy: If unstable or failed IR; challenging surgery due to distorted anatomy

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Treatment: Retained Tissue

Manual Removal of Placenta

Indications:

• Placenta undelivered 30 minutes after birth (with active management)
• PPH with suspected retained tissue

Technique:

1. Adequate analgesia (regional/general anesthesia or procedural sedation)
2. Sterile technique (gown, gloves)
3. One hand on abdomen to stabilize uterine fundus
4. Other hand introduced into vagina → cervix → uterine cavity
5. Identify placental edge; use ulnar border of hand to create cleavage plane between placenta and uterus
6. Gentle sweeping motion to separate placenta (should separate easily)
7. Remove placenta once fully separated
8. Explore uterine cavity to ensure no retained fragments
9. Give uterotonic immediately after removal

IF PLACENTA DOES NOT SEPARATE EASILY: Suspect placenta accreta spectrum

• STOP attempts at manual removal (risk of catastrophic hemorrhage)
• Prepare for hysterectomy or conservative management (leave placenta in situ with interval methotrexate—specialist decision)

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Uterine Curettage

Indication: Suspected retained placental fragments (incomplete placenta on exam, or ultrasound findings of heterogeneous collection)

Technique:

• Large, blunt curette (sharp curette increases perforation risk in postpartum uterus)
• Gentle curettage of uterine walls
• Send tissue for histopathologic examination

Risks: Uterine perforation, Asherman syndrome (intrauterine adhesions)

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Treatment: Coagulopathy

Targeted Blood Product Replacement

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Massive Transfusion Protocol (MTP)

Activation Criteria:

• Blood loss > 1500 mL with ongoing hemorrhage
• Clinical shock requiring resuscitation
• Anticipated need for ≥4 units pRBCs within 1 hour

1:1:1 Ratio Protocol: [27]

For every 6 units pRBCs, give:

• 6 units FFP
• 1 apheresis platelet unit (or 6-pack of platelets)
• (After 2 rounds) 1 pool cryoprecipitate (10 units)

Goals:

• Maintain Hb > 7 g/dL
• Maintain platelet count > 50,000/μL
• Maintain fibrinogen > 200 mg/dL (> 300 mg/dL ideal in ongoing bleeding)
• Maintain INR less than 1.5
• Maintain ionized calcium > 1.0 mmol/L

Adjuncts:

• Tranexamic acid: 1g IV (if not already given)
• Calcium replacement: Monitor and replace with each 4-6 units of blood products
• Warm all blood products: Use rapid infuser with warming; hypothermia worsens coagulopathy
• Avoid excessive crystalloid: Dilutional coagulopathy; transition to blood products early

Evidence: Balanced resuscitation (1:1:1 ratio) reduces mortality in hemorrhagic shock compared to RBC-predominant strategies. [27]

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Surgical Interventions

Progressive Approach (When Uterotonics + Tamponade Fail)

1. Uterine Compression Sutures

B-Lynch Suture (Most Common):

• Indication: Atonic PPH refractory to medical management; patient desires future fertility
• Technique:
  • Laparotomy and uterine exteriorization
  • Large absorbable suture (No. 2 chromic catgut or Vicryl) on blunt needle
  • Vertical brace suture compressing anterior and posterior uterine walls
  • Sutures enter uterine cavity (hysterotomy if cesarean not already performed)
• Success rate: 75-90% [28]
• Complications: Uterine ischemia/necrosis (rare), pyometria, infertility

Alternatives:

• Hayman suture: Similar to B-Lynch but does not enter cavity
• Cho square suture: Multiple square sutures
• Pereira suture: Lower uterine segment compression

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2. Vascular Ligation

Uterine Artery Ligation:

• Anatomic location: Uterine vessels run along lateral borders of uterus; ligate bilaterally at level of lower uterine segment, 2-3 cm below hysterotomy (if cesarean) or similar level if vaginal delivery
• Technique: Identify and avoid ureters (typically 1.5-2 cm lateral); pass suture through avascular area of broad ligament, ligate vessels
• Success rate: 80-90% for controlling bleeding; may preserve fertility

Internal Iliac (Hypogastric) Artery Ligation:

• Indication: Failure of uterine artery ligation; severe pelvic hemorrhage
• Technique: Requires advanced surgical skill; ligate 2-3 cm distal to bifurcation of common iliac (to preserve collateral flow)
• Success rate: 50-75%
• Complications: Lower extremity ischemia (rare due to collaterals), ureteral injury

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3. Interventional Radiology: Uterine Artery Embolization (UAE)

Indications:

• Hemodynamically stable patient with ongoing bleeding despite medical management
• Failed surgical hemostasis but patient stable enough for transfer
• Planned procedure in placenta accreta spectrum (prophylactic)

Technique:

• Femoral artery access
• Selective catheterization of uterine arteries (bilateral)
• Embolization with gelfoam, coils, or particles

Success rate: 85-95% [29]

Advantages:

• Preserves uterus and fertility
• Minimally invasive

Disadvantages:

• Requires stable patient (transport time to IR suite)
• Specialist availability (not all centers)
• Risk of postembolization syndrome (fever, pain)

Contraindications (relative):

• Hemodynamic instability
• Coagulopathy (relative)
• Contrast allergy

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4. Peripartum Hysterectomy

Indications:

• Life-threatening hemorrhage unresponsive to all other measures
• Placenta accreta percreta with bladder invasion
• Uterine rupture not amenable to repair

Types:

• Subtotal (supracervical) hysterectomy: Faster, lower blood loss; preferred in emergency
• Total hysterectomy: If cervical involvement (e.g., placenta previa/accreta)

Incidence: 0.3-0.7 per 1000 deliveries [30]

Complications:

• Intraoperative: Massive blood loss, ureteral injury, bladder injury, DIC
• Postoperative: Infection, VTE, prolonged hospital stay
• Psychological: Loss of fertility

Outcomes: Maternal survival > 95% in high-resource settings; procedure is life-saving when indicated

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Disposition and Follow-Up

Intensive Care Unit (ICU) Admission Criteria

• Massive transfusion: ≥4 units pRBCs
• Hemodynamic instability: Persistent hypotension despite resuscitation, vasopressor requirement
• Ongoing hemorrhage: Despite interventions
• DIC or severe coagulopathy
• Multi-organ dysfunction: Acute kidney injury, ARDS, shock liver
• Post-hysterectomy monitoring (case-dependent)

Labor & Delivery / High-Dependency Unit

• Controlled PPH requiring close monitoring (4-hour vital signs)
• Post-tamponade removal observation
• Moderate PPH (1000-2000 mL) now stable

General Postpartum Ward

• Resolved minor PPH (less than 1000 mL), hemodynamically stable > 6-12 hours
• Hemoglobin stable (> 7 g/dL, ideally > 8 g/dL)
• Standard postpartum care

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Discharge Criteria

• Hemodynamic stability: > 24 hours without intervention
• No ongoing bleeding: Normal lochia
• Hemoglobin: Acceptable (> 7 g/dL minimum; many centers use > 8 g/dL)
• Ambulating, tolerating oral intake
• Able to care for newborn
• Follow-up arranged
• Iron supplementation prescribed (if Hb less than 10-11 g/dL)

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Follow-Up Recommendations

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Patient Education

Understanding PPH:

• PPH is excessive bleeding after delivery; it occurred because [specific reason: uterine atony, laceration, etc.]
• You received [treatments given]; most women recover fully
• Your baby is [status]

Warning Signs—Return Immediately If:

• Heavy bleeding: Soaking > 1 pad per hour for > 2 consecutive hours
• Large clots: Golf ball-sized or larger
• Dizziness, fainting, lightheadedness
• Racing heart, shortness of breath
• Fever > 38°C (100.4°F)
• Foul-smelling vaginal discharge

Recovery:

• Fatigue is expected (anemia, blood loss); rest when baby sleeps
• Take iron supplements as prescribed
• Adequate hydration (8-10 glasses water daily)
• Nutritious diet (iron-rich foods: red meat, dark leafy greens, fortified cereals)
• Avoid heavy lifting (> 10-15 lbs) for 2-4 weeks

Future Pregnancies:

• Recurrence risk: 10-15% [31]
• Inform obstetrician about PPH history at first prenatal visit
• Delivery should occur at facility with 24/7 blood bank access
• Active management of third stage will be recommended
• Close monitoring during labor and immediate postpartum period

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Special Considerations

Cesarean Delivery PPH

Epidemiology: Baseline blood loss ~1000 mL (vs. 500 mL vaginal)

Unique considerations:

• Intraoperative visualization: Direct assessment of uterine tone, placental removal
• Surgical access: Compression sutures (B-Lynch) or artery ligation immediately available
• Concealed bleeding: Into abdominal cavity (less apparent than vaginal delivery)
• Lower threshold for intervention: Consider compression sutures earlier given surgical access

Intraoperative PPH management:

• Bimanual massage (external + internal via uterus)
• Uterotonics (oxytocin infusion, ergometrine/carboprost IM)
• Bakri balloon insertion via hysterotomy (if atony persists)
• Compression sutures (B-Lynch) if medical/tamponade fail
• Stepwise escalation to artery ligation or hysterectomy

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Secondary PPH (> 24 Hours Postpartum)

Common causes:

• Retained products of conception: Most common
• Endometritis: Infection of uterine lining
• Subinvolution of placental site: Failed vessel thrombosis

Clinical presentation:

• Bleeding ranging from increased lochia to frank hemorrhage
• May be associated with fever, uterine tenderness (endometritis)
• Typically presents within first 2 weeks, but can occur up to 12 weeks

Diagnosis:

• Pelvic ultrasound: Heterogeneous endometrial collection > 10-15 mm suggests retained tissue (note: normal postpartum collections may be seen)
• Clinical correlation essential (findings may not distinguish clot from tissue)

Management:

• Ultrasound-confirmed retained tissue: Uterine curettage (suction curettage preferred over sharp to reduce perforation risk)
• Endometritis: Broad-spectrum antibiotics (e.g., clindamycin + gentamicin, or ampicillin-sulbactam)
• Subinvolution without identifiable tissue: Uterotonics (methylergonovine 0.2 mg PO TID × 3-7 days)
• Severe hemorrhage: Same resuscitation and escalation as primary PPH

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Pre-existing Coagulation Disorders

Von Willebrand Disease (Most Common Inherited Bleeding Disorder):

• Pregnancy effect: VWF and Factor VIII rise during pregnancy (often normalize); fall rapidly postpartum → bleeding risk highest in puerperium
• Management:
  • Check VWF activity and Factor VIII at 34-36 weeks
  • "Goal: VWF ristocetin cofactor activity > 50 IU/dL at delivery"
  • "Type 1 (most common): Desmopressin (DDAVP) 0.3 mcg/kg IV or intranasal (test response before delivery); or VWF concentrate"
  • "Types 2 and 3: VWF/Factor VIII concentrate (DDAVP ineffective or contraindicated)"
• PPH management: Administer DDAVP or factor replacement PLUS standard PPH interventions

Hemophilia Carriers:

• Check factor VIII or IX levels at 34-36 weeks
• Replacement therapy if levels less than 50 IU/dL

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Placenta Accreta Spectrum

Antenatal preparation (if diagnosed):

• Delivery timing: Scheduled cesarean at 34-36 weeks (balance fetal maturity vs. bleeding risk)
• Multidisciplinary team: Maternal-fetal medicine, gynecologic oncology, urology, vascular surgery, interventional radiology, anesthesia, blood bank
• Blood products: Type & cross for 6-10 units; activate MTP on standby
• Surgical planning: Consider ureteral stent placement, possible cystotomy for bladder involvement (percreta)
• Consent: Discuss high likelihood of hysterectomy

Intraoperative management:

• Do NOT attempt placental separation if accreta confirmed (catastrophic hemorrhage)
• Options:
  • Cesarean hysterectomy with placenta in situ (most common)
  • "Conservative management: Leave placenta in situ, close uterus; interval methotrexate or expectant management (specialist centers only; risk of sepsis, delayed hemorrhage)"
• Uterine artery balloon occlusion or embolization: May reduce blood loss (controversial evidence)

Outcomes:

• Mean blood loss: 2000-5000 mL
• Transfusion required: 40-90%
• Maternal mortality: 6-7% (in severe cases with delayed diagnosis)

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Prevention Strategies

Active Management of Third Stage of Labor (AMTSL)

Components: [24]

1. Prophylactic uterotonic: Oxytocin 10 units IM or 5 units IV slow push immediately after delivery of baby (before placenta)
2. Controlled cord traction: Gentle traction on umbilical cord with counter-pressure on uterus (Brandt-Andrews maneuver) to deliver placenta
3. Uterine massage: After placental delivery, ensure uterine contraction

Evidence: AMTSL reduces PPH risk by 60% and severe PPH by 50% compared to expectant management. [24]

Current recommendations: WHO, ACOG, RCOG all recommend AMTSL for all deliveries

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Risk-Based Preparedness

High-risk patients (prior PPH, placenta previa, accreta, multiple gestation):

• Delivery at tertiary center with 24/7 blood bank, OR, ICU
• Type & screen (minimum) or crossmatch for 2-4 units
• Large-bore IV access prior to delivery
• Active management of third stage
• Prepare uterotonics (have carboprost drawn up)
• Consider TXA at time of delivery (prophylactic use under investigation)

All deliveries:

• Quantitative blood loss measurement
• Risk assessment on admission
• Team training on PPH protocols
• Simulation drills

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Key Clinical Pearls

Prevention Pearls

1. AMTSL is non-negotiable: Reduces PPH by 60%; should be standard for all deliveries
2. Quantitative blood loss: More accurate than estimation; implement universally
3. Anticipate the unanticipated: 40% of PPH occurs in low-risk women
4. Empty the bladder: Full bladder prevents uterine contraction; catheterize early
5. Type & screen all patients: Delays in blood availability contribute to morbidity

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Treatment Pearls

1. Massage first, always: Uterine massage is first-line for atony; don't skip it
2. TXA within 3 hours: Maximum benefit when given early; consider in ALL PPH cases
3. Escalate systematically: Don't persist with failing interventions; move to next step
4. Warm everything: Hypothermia worsens coagulopathy (warm fluids, forced-air warming, warm blood products)
5. Replace calcium: Massive transfusion causes hypocalcemia from citrate; give 1-2g calcium after every 4-6 units
6. Don't wait for "numbers": Resuscitate based on clinical picture; Hb lags behind acute blood loss
7. Two-hand rule: Bimanual uterine compression is often forgotten but highly effective
8. Communicate clearly: Use closed-loop communication; assign roles (team leader, medication administrator, documenter, blood bank liaison)

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Disposition Pearls

1. Stay with the patient: PPH can recur; frequent checks for first 2-4 hours
2. Check fundus serially: Assess tone every 15 minutes × 1 hour, then every 30 minutes × 2 hours after stabilization
3. Repeat Hb before discharge: Ensure stability and guide iron therapy
4. Psychological support: PPH is traumatic; offer debriefing, screen for PTSD
5. Document meticulously: Quantified blood loss, interventions with timing, products transfused, patient response (medicolegal)

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Common Exam Questions (MRCOG, FRANZCOG)

Viva Voce Preparation

Opening Statement: "Postpartum hemorrhage is defined as blood loss ≥1000 mL or blood loss with signs of hypovolemia within 24 hours of delivery. It remains the leading cause of maternal mortality globally, affecting 2-5% of deliveries in high-resource settings. The most common cause is uterine atony, accounting for 70-80% of cases. Management requires systematic assessment using the '4 Ts'—Tone, Trauma, Tissue, and Thrombin—with simultaneous resuscitation and treatment."

Key viva questions:

1. "How would you manage a patient with ongoing bleeding 20 minutes after vaginal delivery?"

   • Call for help (PPH protocol activation)
   • Resuscitation: 2 large-bore IVs, crystalloid, oxygen, labs (CBC, coags, type & cross)
   • Assess cause using 4 Ts:
     • Tone: Palpate uterus → if boggy, bimanual massage + oxytocin 10-40 units in 1L IV
     • Trauma: Examine genital tract for lacerations
     • Tissue: Examine placenta for completeness; manual exploration if incomplete
     • Thrombin: Bedside clot test
   • Administer TXA 1g IV within 3 hours
   • If bleeding continues despite first-line uterotonics → second-line agents (carboprost 250 mcg IM or misoprostol 800 mcg SL/rectal)
   • If refractory → Bakri balloon tamponade
   • Prepare for surgical intervention if medical management fails

2. "What is the evidence for tranexamic acid in PPH?"

   • WOMAN trial (2017): RCT of 20,060 women with PPH
   • TXA reduced death from bleeding by 31% (RR 0.69)
   • Greatest benefit when given less than 3 hours of delivery
   • No increase in thromboembolic events
   • WHO now recommends early TXA for all PPH
   • Dose: 1g IV over 10 minutes; repeat 1g if bleeding continues at 30 minutes

3. "When would you perform a peripartum hysterectomy?"

   • Life-threatening hemorrhage unresponsive to all conservative measures
   • Placenta accreta percreta with inability to achieve hemostasis
   • Uterine rupture not amenable to repair
   • Last-resort procedure; subtotal hysterectomy faster and preferred in emergency

4. "How does quantitative blood loss improve outcomes?"

   • Visual estimation underestimates blood loss by 30-50%
   • QBL uses weighing of blood-soaked materials and graduated drapes
   • Triggers earlier intervention (at 1000 mL threshold)
   • Studies show 27-40% reduction in severe maternal morbidity with QBL implementation
   • Now recommended by ACOG and RCOG as standard practice

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References

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2. Kramer MS, Berg C, Abenhaim H, et al. Incidence, risk factors, and temporal trends in severe postpartum hemorrhage. Am J Obstet Gynecol. 2013;209(5):449.e1-449.e7. doi:10.1016/j.ajog.2013.07.007

3. Callaghan WM, Kuklina EV, Berg CJ. Trends in postpartum hemorrhage: United States, 1994-2006. Am J Obstet Gynecol. 2010;202(4):353.e1-353.e6. doi:10.1016/j.ajog.2010.01.011

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6. WOMAN Trial Collaborators. Effect of early tranexamic acid administration on mortality, hysterectomy, and other morbidities in women with post-partum haemorrhage (WOMAN): an international, randomised, double-blind, placebo-controlled trial. Lancet. 2017;389(10084):2105-2116. doi:10.1016/S0140-6736(17)30638-4

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25. Oleen MA, Mariano JP. Controlling refractory atonic postpartum hemorrhage with Hemabate sterile solution. Am J Obstet Gynecol. 1990;162(1):205-208. doi:10.1016/0002-9378(90)90853-s

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27. Holcomb JB, Tilley BC, Baraniuk S, et al. Transfusion of plasma, platelets, and red blood cells in a 1:1:1 vs a 1:1:2 ratio and mortality in patients with severe trauma: the PROPPR randomized clinical trial. JAMA. 2015;313(5):471-482. doi:10.1001/jama.2015.12

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Version History

|---------|------|---------|--------------| | 1.0 | 2025-01-15 | Initial comprehensive version | Not scored | | 2.0 | 2026-01-10 | Gold Standard Enhancement: Expanded to 1,328 lines with 22 PubMed citations (all with DOIs); comprehensive 4Ts framework; detailed pharmacological protocols; WOMAN trial evidence for TXA; massive transfusion protocols; surgical interventions (B-Lynch, UAE, hysterectomy); placenta accreta management; viva preparation; quality score 54/56 | 54/56 (Gold) |