Ruptured ectopic pregnancy with hemorrhagic shock
Stem
A 29-year-old woman, 60 kg, collapsed at home with sudden lower abdominal pain. Her last period was 7 weeks ago and a urine pregnancy test is positive. Bedside ultrasound shows free fluid in the pelvis and hepatorenal space. Blood pressure is 76/40, heart rate 132, hemoglobin 8.1 g/dL; she has one 20-gauge IV and ate 2 hours ago. The gynecologist is taking her straight to the OR.
Question
How do you anesthetize her?
Ideal answer
HeadlineHemorrhagic shock from a ruptured ectopic pregnancy: surgical control is the resuscitation, so I induce with her prepped and draped and blood running.
- Large-bore access, massive transfusion protocol, uncrossmatched O-negative, because she is a woman of childbearing age bleeding now.1
- Prep and drape before induction, surgeon scrubbed, because induction removes her compensatory sympathetic tone.
- Rapid sequence induction, reduced-dose ketamine or etomidate, rocuronium, because she has a full stomach and little reserve; vasopressor drawn up.
- Laparotomy if she stays unstable, because unstable patients need immediate surgery, not laparoscopy.2
- Arterial line, gas, fibrinogen and calcium once bleeding is controlled, then Rh status for anti-D.2
Watch for: collapse at induction or insufflation, ongoing loss into the abdomen, and coagulopathy as transfusion grows.
Breaking down the answer
- Why I suspect it in everyone — ectopic pregnancy affects about 2 per 100 diagnosed pregnancies; any woman of reproductive age with pain, bleeding, syncope or shock is evaluated regardless of history.2
- Timing and rupture — rupture usually happens between 6 and 16 weeks; the later the rupture, the faster she bleeds.2 Changes if: stable with a small hemoperitoneum, then laparoscopic salpingectomy.
- ACOG on instability — tubal ectopic pregnancy in an unstable patient is a medical emergency requiring prompt surgery.3 Medical management with methotrexate is for detected-early, stable cases.3
- Systems save time — adding POCUS to the triage examination cut arrival-to-OR time by a median 125 minutes in one center.4
- Blood choices — RhD-negative cells are reserved for RhD-negative women of childbearing potential and unknown types; a sample before the first unit allows a switch to type-specific blood.1
- Rho(D) immune globulin — every Rh-negative patient receives it, whether treated medically or surgically.2
Follow-up question
She is more stable after 2 units, 98/56 and heart rate 110, and the surgeon starts laparoscopically. On insufflation to 15 mmHg the pressure falls to 58/30 and end-tidal CO2 drops from 34 to 18 mmHg. What do you do?
Follow-up answer
HeadlineLoss of venous return in an underfilled patient, with gas embolism possible; I tell the surgeon to release the pneumoperitoneum now.
Desufflation, rapid transfusion through the warmer, vasopressor boluses, and 100% oxygen. If end-tidal CO2 recovers and the pressure follows, it was preload; if not, I treat as gas embolism and look with echo. I ask the surgeon to convert to laparotomy for fast control while blood, plasma and calcium continue. If the pulse is lost, CPR and epinephrine. Once she is stable I recheck hemoglobin, fibrinogen and a viscoelastic test.
Pitfalls that cost points
- Waiting for crossmatched blood or a central line before surgery; the bleeding vessel is the problem.
- Full induction doses of propofol in a patient compensating with tachycardia.
- Assuming a young woman cannot be this unwell from a pregnancy she did not know about.
Rapid-fire
Q: How often is a heterotopic pregnancy? A: About 1 in 10,000 to 30,000, more often after assisted reproduction.2
Q: Which procedure is usual? A: Salpingectomy; salpingostomy is reserved for rare cases when tube preservation is a priority.2
Q: How sensitive is a urine pregnancy test? A: About 99%.2
Q: Leading cause of first-trimester maternal death? A: Ectopic pregnancy.4
Numbers to know
| Item | Value |
|---|---|
| Incidence | ~2 per 100 diagnosed pregnancies2 |
| Usual timing of rupture | 6–16 weeks2 |
| Heterotopic pregnancy | 1 in 10,000–30,0002 |
| Arrival-to-OR time saved with triage POCUS | Median 125 min4 |
Links
- Massive hemorrhage and transfusion, Transfusion decisions: thresholds, type and screen, emergency release, preoperative anemia, Rapid sequence induction and full stomach, laparoscopy, Choosing an induction agent
- ACOG Practice Bulletin 193, Tubal Ectopic Pregnancy (reaffirmed 2025)
Sources
- 1.ABCs of Blood Transfusions · OpenAnesthesia (IARS) · openanesthesia.org
- 2.Ectopic Pregnancy (Merck Manual Professional Edition, full review May 2025, updated July 2026) · Merck Manual, 2026 · merckmanuals.com
- 3.Tubal Ectopic Pregnancy (Practice Bulletin No. 193, reaffirmed 2025) · ACOG, 2018 · acog.orgAbstract page only.
- 4.Point-of-care ultrasound after medical screening exam reduces time to ruptured ectopic pregnancy diagnosis and surgery · West J Emerg Med (PMC13660607, abstract), 2026 · europepmc.org
Facts on this page were checked against these sources on Nov 2, 2026. Guidelines change; confirm doses against current institutional protocols.