NEET PG clinical case walkthrough: a young woman presents with heavy vaginal bleeding 2 hours post delivery. Step-by-step diagnosis and management of atonic postpartum hemorrhage including the 4 Ts, uterotonics, B-Lynch suture, and surgical escalation.
Version 1.0 — Published April 2026
A 28-year-old G2P1 (one previous normal vaginal delivery 3 years ago) is brought to the attention of the on-call team 2 hours after an uncomplicated normal vaginal delivery of a 3.8 kg male infant. The third stage of labor was managed actively with oxytocin 10 IU IM. The placenta was delivered apparently complete. She now has sudden heavy vaginal bleeding, soaking through pads rapidly. The estimated blood loss is 800 mL and rising.
She is anxious and pale. Her previous delivery was uneventful with no history of PPH. She has no bleeding disorders and takes no anticoagulants. The current labor was induced with oxytocin for postdates (41+3 weeks) and lasted 14 hours.
Postpartum hemorrhage after a prolonged, oxytocin-augmented labor delivering a macrosomic baby (3.8 kg) in a multiparous woman — this vignette loads three risk factors for uterine atony. The active management of the third stage with oxytocin was appropriate, but uterine atony can occur despite prophylaxis, especially with these risk factors.
General examination:
Abdominal examination:
Perineal examination:
Assessment: Primary postpartum hemorrhage (blood loss >500 mL within 24 hours of vaginal delivery), most likely due to uterine atony based on the boggy uterus, risk factor profile, and absence of visible trauma.
The 4 Ts framework provides the systematic approach to PPH causation:
| Cause | Frequency | Assessment findings | Points in this case |
|---|---|---|---|
| Tone (uterine atony) | 70-80% | Soft, boggy uterus above expected level | Boggy uterus, prolonged labor, macrosomia, oxytocin use — strongly favored |
This content is for educational purposes for NEET PG exam preparation. It is not a substitute for professional medical advice, diagnosis, or treatment. Clinical information has been reviewed by qualified medical professionals.
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Join on Telegram →| Tissue (retained products) |
| ~10% |
| Incomplete placenta on inspection, uterus fails to contract despite uterotonics |
| Placenta reported complete — but cannot rule out retained cotyledon/membranes without manual exploration |
| Trauma (genital tract injury) | ~10% | Visible laceration, cervical tear, hematoma, uterine rupture signs | No visible laceration on initial inspection — cervical exploration still needed |
| Thrombin (coagulopathy) | <5% | Generalized oozing, failure to form clots, lab evidence of DIC | No bleeding history, no DIC features yet — but prolonged PPH can itself trigger DIC |
In this case, uterine atony is the most likely diagnosis. However, the initial management should include systematic exclusion of trauma and retained tissue, because these are treatable causes that worsen outcomes if missed. The management sequence proceeds simultaneously on two tracks: resuscitation and cause-specific treatment.
Investigations should not delay initial resuscitation and empiric management. They are sent simultaneously:
Point-of-care ultrasound can rapidly assess for retained products (echogenic material in the uterine cavity) and rule out uterine rupture (free fluid in the abdomen).
Primary postpartum hemorrhage due to uterine atony (the 4 Ts: Tone is the cause).
The diagnosis is clinical: active bleeding from a soft, boggy uterus in the postpartum period, with risk factors (prolonged oxytocin-augmented labor, macrosomic baby, multiparity). The estimated blood loss of 800 mL and rising, combined with tachycardia and hypotension, classifies this as major PPH requiring immediate escalation.
PPH management follows a stepwise escalation protocol. Each step is given a defined time window — failure to progress to the next step is a common management error (Williams Obstetrics, 26th Edition).
| Drug | Dose and route | Onset | Contraindication | Key side effect |
|---|---|---|---|---|
| Oxytocin | 10 IU IV bolus slow, then 20-40 IU in 500 mL NS infusion | 1-2 min | None absolute | Water retention (high doses), hypotension (rapid IV bolus) |
| Ergometrine | 0.2 mg IM or slow IV | 2-5 min (IM) | Hypertension, preeclampsia, cardiac disease | Vasospasm, hypertension, nausea |
| Carboprost (15-methyl PGF2-alpha) | 250 mcg deep IM, repeat every 15 min (max 8 doses = 2 mg) | 3-5 min | Asthma | Bronchospasm, diarrhea, fever |
| Misoprostol (PGE1) | 800 mcg sublingual or rectal | 10-15 min | None absolute | Fever, shivering, diarrhea |
The contraindication questions are the most tested aspect of PPH in NEET PG: ergometrine in a hypertensive patient and carboprost in an asthmatic patient are the two classic traps.
If uterotonics fail (bleeding continues after 15-20 minutes of adequate uterotonic therapy):
Bimanual uterine compression — one hand (fist) in the vagina pressing against the anterior uterine wall, the other hand on the abdomen compressing the posterior wall. This provides immediate tamponade while other interventions are prepared.
Uterine balloon tamponade — Bakri balloon (or Foley catheter/condom catheter in resource-limited settings) inserted into the uterine cavity and inflated with 300-500 mL saline. Success rate 80-90%. If bleeding stops with balloon inflation ("tamponade test positive"), continue for 12-24 hours. If bleeding continues despite balloon, proceed to surgical intervention.
B-Lynch uterine compression suture — a surgical technique that "braces" the uterus by running a continuous suture from the lower segment, over the fundus anteriorly, across the fundus, down the posterior surface, and back. It mechanically compresses the uterine walls. Success rate approximately 90%. Other compression suture variants: Hayman, Cho, Pereira.
Uterine artery ligation — bilateral ligation of the uterine arteries at the level of the lower uterine segment. Reduces pulse pressure to the uterus. Can be combined with ovarian artery ligation for additional effect.
Internal iliac artery ligation — reduces pelvic blood flow by 49% (converts arterial flow to venous-pressure flow). Technically demanding. Does not preclude future pregnancy.
Uterine artery embolization — interventional radiology procedure, highly effective (>90% success), but requires hemodynamic stability and IR availability.
Peripartum hysterectomy — the last resort. Indicated when all conservative measures fail and life is threatened. Subtotal hysterectomy (preserving the cervix) is faster and has less blood loss than total hysterectomy in the emergency setting. The decision to proceed to hysterectomy should not be delayed — delayed hysterectomy in massive PPH carries higher mortality than timely intervention.
The patient responds to oxytocin infusion augmentation and carboprost 250 mcg IM (no contraindications — she is not hypertensive or asthmatic). After two doses of carboprost at 15-minute intervals, the uterus becomes firm and well-contracted, and the bleeding reduces significantly. Estimated total blood loss is 1200 mL. She receives 2 units of packed RBCs and tranexamic acid. Post-resuscitation hemoglobin is 8.5 g/dL. She is monitored in the high-dependency unit for 24 hours with regular assessment of uterine tone, vital signs, and urine output.
NBE tests PPH through three question patterns:
Pattern 1 — Identify the cause: A clinical vignette describes postpartum bleeding with specific examination findings. The answer requires identifying the cause using the 4 Ts framework. A boggy uterus = atony. Incomplete placenta = retained tissue. Visible laceration = trauma. Generalized oozing with lab evidence of coagulopathy = thrombin.
Pattern 2 — Select the correct uterotonic: The vignette includes a contraindication that eliminates one agent. "28-year-old with PPH and a history of bronchial asthma — which uterotonic is contraindicated?" Answer: carboprost. "PPH in a patient with preeclampsia — which uterotonic is contraindicated?" Answer: ergometrine.
Pattern 3 — Management escalation: "Uterotonics have failed. What is the next step?" Answer depends on the clinical setting — B-Lynch suture or uterine balloon tamponade. "All conservative measures have failed. What is the definitive treatment?" Answer: hysterectomy.
For comprehensive OBG preparation, study the obstetrics and gynecology high-yield guide and practice OBG MCQs daily.
Primary PPH is blood loss of 500 mL or more after vaginal delivery or 1000 mL or more after cesarean section within 24 hours. Major PPH exceeds 1000 mL. Secondary PPH occurs between 24 hours and 12 weeks postpartum. NEET PG questions use these volume thresholds.
Tone (uterine atony, 70-80%), Tissue (retained products, 10%), Trauma (lacerations, 10%), and Thrombin (coagulopathy, less than 5%). Atony is the most common cause by a large margin.
Oxytocin first, ergometrine second (contraindicated in hypertension), carboprost third (contraindicated in asthma), misoprostol as alternative. The contraindication-based selection is the most tested PPH question pattern.
A uterine compression suture that mechanically compresses the uterus to control bleeding from the placental bed. Used when uterotonics and bimanual compression fail. Success rate approximately 90%. It is a uterus-preserving surgical option before hysterectomy.
When all conservative measures (uterotonics, tamponade, compression sutures, artery ligation/embolization) have failed and life is at risk. Also for irreparable uterine rupture and severe placenta accreta spectrum. The decision should not be delayed.
The WOMAN trial (2017, Lancet) showed 19% reduction in bleeding-related death when 1 g IV is given within 3 hours. It is now recommended as an adjunct to uterotonics in all PPH cases.
Uterine overdistension (macrosomia, polyhydramnios, twins), prolonged labor, grand multiparity, previous PPH, chorioamnionitis, and oxytocin augmentation. NBE vignettes include 2-3 risk factors to guide the candidate toward atonic PPH.
Through clinical vignettes requiring cause identification (4 Ts), uterotonic selection (with contraindications), and management escalation. The classic traps: ergometrine in hypertension and carboprost in asthma. Expect 1-2 questions per paper.
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This content is for educational purposes for NEET PG exam preparation. It is not a substitute for professional medical advice, diagnosis, or treatment. Clinical information has been reviewed by qualified medical professionals.
Written by: NEETPGAI Editorial Team Reviewed by: Pending SME Review Last reviewed: April 2026
This article is reviewed by qualified medical professionals for clinical accuracy and exam relevance. For corrections or updates, contact the editorial team.