11.3 Obstetric Complications: Postpartum Hemorrhage (PPH) & Active Third Stage (AMTSL)

11.3 Obstetric Complications: Postpartum Hemorrhage (PPH) & Active Third Stage (AMTSL)

Quick Answer: Postpartum Hemorrhage (PPH) is defined as cumulative blood loss ≥ 500 mL following a vaginal birth, ≥ 1000 mL following Cesarean birth, or any blood loss causing hemodynamic instability. It is categorized into Primary (< 24 hours) and Secondary (24 hours to 6 weeks). Universal prevention relies on Active Management of the Third Stage of Labor (AMTSL): 10 IU Oxytocin IM within 1 minute of birth, Controlled Cord Traction (CCT) with counter-traction, and immediate uterine massage. Etiology is governed by the "4 Ts": Tone (atony, 70–80%), Trauma (lacerations, 15–20%), Tissue (retained placenta, 5–10%), and Thrombin (coagulopathies, < 1%). Atonic PPH manifests as a boggy, high fundus, while traumatic PPH displays continuous bright red trickling despite a rock-hard, contracted fundus.

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Definition, Epidemiology, and Classification of PPH

Postpartum Hemorrhage remains the leading direct cause of maternal mortality in Ghana and worldwide, accounting for over 30% of all pregnancy-related deaths across Sub-Saharan Africa. The rapid onset of hypovolemic shock in obstetric hemorrhage necessitates swift, algorithmic clinical intervention.

Clinical Definitions

• Quantitative Definition: Blood loss ≥ 500 mL after vaginal birth, or ≥ 1000 mL after Cesarean section;
• Hemodynamic Definition: Any intrapartum or postpartum blood loss that causes hemodynamic instability, manifested by maternal tachycardia (pulse > 100 bpm), hypotension (systolic BP < 90 mmHg), tachypnea, cold clammy extremities, pallor, oliguria, or altered sensorium;
• Severe PPH: Blood loss ≥ 1000 mL regardless of delivery mode, or any hemorrhage requiring emergency blood transfusion or accompanied by shock.

Chronological Classification

1. Primary (Early) PPH: Occurs within the first 24 hours following delivery. The vast majority of fatal hemorrhages occur within this window, overwhelmingly driven by uterine atony or extensive genital tract lacerations;
2. Secondary (Late) PPH: Occurs between 24 hours and 6 weeks postpartum. Most commonly caused by retained placental fragments or membranes, subinvolution of the placental bed, or puerperal endometritis.

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Active Management of the Third Stage of Labor (AMTSL)

Active Management of the Third Stage of Labor is an evidence-based triad of interventions recommended by the Ghana Health Service and the World Health Organization for every single woman giving birth, regardless of individual risk factors. AMTSL shortens the third stage, reduces the incidence of PPH by over 60%, and diminishes the need for blood transfusions.

+--------------------------------------------------------------------------+
|                   THE THREE MANDATORY PILLARS OF AMTSL                   |
|                                                                          |
| 1. Routine Uterotonic (Oxytocin 10 IU IM) within 1 minute of birth       |
| 2. Controlled Cord Traction (CCT) with suprapubic counter-traction       |
| 3. Immediate uterine massage followed by 15-minute fundal palpation      |
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The Three Mandatory Pillars of AMTSL

1. Administration of a Prophylactic Uterotonic Drug within 1 Minute of Birth:
   • Prior to administration, palpate the maternal abdomen to confirm the absence of an undiagnosed second twin;
   • First-Line Agent: Administer Oxytocin 10 IU intramuscularly (IM) into the anterior thigh;
   • Low-Resource Alternative: Where oxytocin is unavailable or cold chain (2°C to 8°C) is compromised, administer Misoprostol 600 mcg orally;
2. Controlled Cord Traction (CCT) with Suprapubic Counter-Traction (Modified Brandt-Andrews Technique):
   • Clamp the umbilical cord close to the perineum;
   • Wait for a strong uterine contraction and observable signs of placental separation (lengthening of the cord, gush of blood, globular fundus);
   • Place the palmar surface of the non-dominant hand suprapubically on the lower abdomen, applying firm upward counter-traction toward the maternal umbilicus;
   • Concurrently, the dominant hand holds the clamped cord and exerts steady, gentle downward and backward traction along the curve of the birth canal;
   • When the placenta emerges at the vulva, cup it in both hands and gently twist it in a clockwise direction to form a rope-like strand, slowly peeling off the fetal membranes intact;

   • [!CAUTION] Critical Warning: Risk of Uterine Inversion Never apply cord traction without simultaneous, firm suprapubic counter-traction, and never yank or pull aggressively on a flaccid uterus. Doing so can cause catastrophic acute uterine inversion, precipitating massive neurogenic shock and lethal hemorrhage!

3. Immediate and Periodic Uterine Massage:
   • Immediately following the delivery of the placenta and membranes, massage the uterine fundus through the abdominal wall until it is rock-hard and contracted;
   • Inspect the maternal surface of the placenta to verify that all cotyledons are present and intact, and inspect the fetal surface and membranes for severed vessels suggestive of a retained succenturiate lobe;
   • Teach the woman how to perform self-massage, and reassess fundal firmness and lochial flow every 15 minutes for the first 2 hours postpartum.

[!NOTE] WHO 2012 update: WHO's PPH recommendations keep the prophylactic uterotonic as the key component, make controlled cord traction optional where skilled attendants are available, and no longer recommend sustained uterine massage for women who have received prophylactic oxytocin—instead, every woman's uterine tone is assessed by abdominal palpation after birth. Many Ghanaian curricula still teach massage as the third AMTSL step, which is how the quiz below is keyed.

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Etiology of PPH: The "4 Ts" Framework

Every case of postpartum hemorrhage arises from one or more of four pathophysiological mechanisms, memorized by the mnemonic The 4 Ts:

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Clinical Differentiation: Uterine Atony vs. Genital Tract Trauma

Prompt bedside differentiation between atonic and traumatic bleeding determines the lifesaving course of action:

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Systematic Emergency Management Protocol for Atonic PPH

When atonic PPH occurs, the healthcare team must mobilize immediately according to a structured, time-critical resuscitation pathway:

Step 1: Alert the Team & Mobilize Help

• Call for immediate emergency assistance (Activate "Code Red" / Obstetric Hemorrhage Team);
• Designate specific roles: Team leader, airway/respiration nurse, medication/IV line nurse, scribe/recorder;
• Note the exact time and initiate visual blood loss quantification (weighing swabs and pads).

Step 2: Mechanical Compression

• External Bimanual Compression: Place one hand on the anterior abdominal wall over the fundus and the other hand flat against the lower abdomen; compress the uterus firmly between the two hands;
• Internal Bimanual Compression (Hamilton's Maneuver): Insert a gloved hand into the vagina, form a closed fist in the anterior fornix, and push against the anterior uterine wall. Place the other hand externally behind the uterine fundus on the abdomen; squeeze the uterus forcefully between the internal fist and external hand to mechanically occlude the intramyometrial sinuses;
• External Abdominal Aortic Compression: Place a closed fist over the abdominal aorta just above the umbilicus and press firmly backward against the lumbar spine until the femoral pulse is no longer palpable, arresting arterial inflow to the pelvis.

Step 3: Evacuate the Bladder

• Insert an indwelling Foley catheter immediately to empty the bladder. A full bladder mechanically pushes the uterus upward and backward, physically preventing the myometrium from contracting down. Leave the catheter in place to monitor hourly urine output as an indicator of renal perfusion.

Step 4: Pharmacological Escalation (Uterotonics & Hemostatics)

Escalate uterotonics in rapid succession:

1. Oxytocin: Infuse 20 to 40 IU in 1000 mL Normal Saline or Ringer's Lactate at 60 drops/minute (rapid IV titration);
2. Ergometrine: Administer 0.2 mg IM or slowly IV (WHO dose; some national formularies use the 0.5 mg ampoule), which induces a sustained uterine contraction;

   [!WARNING] Strict Contraindication: Ergometrine and methylergometrine are absolutely contraindicated in women with preeclampsia, eclampsia, or hypertension because they cause profound peripheral vasoconstriction and can trigger fatal cerebral hemorrhage or pulmonary edema!

3. Misoprostol: Administer 800 mcg sublingually, bucally, or rectally;
4. Tranexamic Acid (TXA): Administer 1 g IV slowly over 10 minutes within 3 hours of birth. TXA stabilizes fibrin clots; if bleeding persists after 30 minutes, administer a second 1 g dose.

Step 5: Aggressive Intravenous Resuscitation

• Secure two large-bore IV cannulae (14G or 16G);
• Infuse warm isotonic crystalloids (Normal Saline or Ringer's Lactate) rapidly (1 liter over 15–20 minutes);
• Take blood immediately for urgent Grouping and Cross-matching (at least 4 units packed red blood cells), Full Blood Count, and bedside clotting test;
• Activate the hospital Massive Transfusion Protocol (MTP) if shock is refractory, administering packed red cells, fresh frozen plasma, and platelets in a balanced 1:1:1 ratio.

Step 6: Non-Surgical Uterine Balloon Tamponade (UBT)

• If bleeding is refractory to uterotonics, insert a Uterine Balloon Tamponade (Bakri balloon or a sterile condom tied over a Foley catheter) into the uterine cavity;
• Inflate the balloon with 300 to 500 mL of warm sterile saline until bleeding ceases. Pack the vagina with sterile gauze to prevent expulsion. Leave in place for 12–24 hours under prophylactic antibiotic cover.

Step 7: Surgical Interventions (Life-Saving Salvage)

When medical and tamponade therapies fail to arrest atonic hemorrhage, surgical laparotomy is performed without delay:

• B-Lynch Compression Sutures: Bracing sutures placed around the uterine corpus to compress anterior and posterior walls together;
• Bilateral Uterine Artery Ligation (O'Leary stitches): Ligates ascending branches of the uterine arteries;
• Internal Iliac (Hypogastric) Artery Ligation: Reduces pelvic pulse pressure;
• Emergency Peripartum Hysterectomy: Subtotal or total hysterectomy performed as the definitive procedure of last resort to save maternal life.