Ectopic Pregnancy: Diagnosis and Management
Written by Dr. Muhammad Salar Raza · Manually reviewed by Dr. Muhammad Salar Raza · Content updated
Clinical Pathway
Consider ectopic pregnancy in any woman of reproductive age with amenorrhea, unilateral pelvic pain, or irregular bleeding. Measure quantitative beta-hCG and perform transvaginal ultrasound; an empty uterus with beta-hCG above the discriminatory zone (about 1500-3500 IU/L) strongly suggests ectopic. Hemodynamically unstable patients or ruptured ectopics require urgent laparoscopic surgery, usually salpingectomy. Stable patients with small unruptured ectopics, low and declining or plateauing hCG, and no fetal heartbeat may receive intramuscular methotrexate with strict hCG follow-up on days 4 and 7. Expectant management is reserved for very low, falling hCG levels. Give anti-D immunoglobulin to Rh-negative women after surgical management.
Clinical Reasoning
Shoulder-tip pain from diaphragmatic irritation and syncope signal rupture with hemoperitoneum; treat as a surgical emergency without waiting for imaging confirmation. Serial beta-hCG guides management: in a viable intrauterine pregnancy hCG roughly doubles every 48 hours, whereas a suboptimal rise raises suspicion but never confirms location on its own. Methotrexate requires reliable follow-up, hCG below about 1500-5000 IU/L depending on protocol, no rupture, and no intrauterine pregnancy; a further hCG rise between days 4 and 7 means a second dose or surgery. Always exclude heterotopic pregnancy risk in assisted conception, where an intrauterine sac does not exclude a coexisting ectopic.
Sample MCQ
A 30-year-old woman with 6 weeks of amenorrhea has left iliac fossa pain. She is stable with normal vital signs. Beta-hCG is 3200 IU/L and transvaginal ultrasound shows an empty uterus with a 2.5 cm left adnexal mass and no free fluid. She desires future fertility and can attend follow-up. What is the most appropriate management?
- AIntramuscular methotrexate with serial hCG monitoring
- BImmediate laparotomy
- CReassure and repeat ultrasound in 3 months
- DOral mifepristone
Correct Answer: Intramuscular methotrexate with serial hCG monitoring
She has an unruptured ectopic, is hemodynamically stable, has a small mass without free fluid, and can attend follow-up, so methotrexate with day 4 and day 7 hCG checks is appropriate and preserves the tube. Immediate laparotomy is reserved for rupture, instability, or failed medical criteria; stable patients warrant laparoscopy if surgery is needed, not laparotomy. Reassurance with delayed review is unsafe because rupture can be catastrophic, and 3 months is far too long. Mifepristone has no established role in ectopic pregnancy; it is used in intrauterine pregnancy termination and miscarriage protocols.
Guidelines and further reading
Related Clinical Topics
Preeclampsia: Diagnosis and Management
Diagnose preeclampsia with new hypertension (140/90 mmHg or higher) after 20 weeks of gestation plus proteinuria or maternal organ dysfunction. Severe features include pressure of 160/110 mmHg or higher, severe headache, visual disturbance, epigastric pain, thrombocytopenia, renal impairment, or pulmonary edema. Severe preeclampsia mandates admission, magnesium sulfate for seizure prophylaxis, and antihypertensive therapy with labetalol, oral nifedipine, or hydralazine. The definitive treatment is delivery, timed by gestational age and severity: immediate stabilization then delivery at term or with severe features, and expectant management only in carefully selected preterm cases without severe features. Continue magnesium for 24 hours postpartum.
Chronic Hypertension: Diagnosis and Management
Chronic hypertension is a persistent and sustained elevation of blood pressure, typically defined as a systolic blood pressure greater than or equal to 130 mmHg or a diastolic blood pressure greater than or equal to 80 mmHg on multiple occasions. It is a major modifiable risk factor for various cardiovascular diseases, stroke, and kidney disease. Treatment for chronic hypertension involves a multi-faceted approach, starting with lifestyle modifications such as dietary changes (e.g., DASH diet), regular physical activity, weight loss, and reduced sodium and alcohol intake. Pharmacological therapy is often necessary and may include various classes of antihypertensive medications like diuretics, ACE inhibitors, angiotensin receptor blockers (ARBs), beta-blockers, and calcium channel blockers, frequently used in combination to achieve target blood pressure. Chronic hypertension is often referred to as 'the silent killer' because it is frequently asymptomatic for many years, even at high levels. When symptoms do occur, they are typically non-specific and may include headaches, dizziness, nosebleeds, or shortness of breath, usually manifesting in severe or long-standing cases or during a hypertensive crisis. Most diagnoses are made during routine medical screenings.
Gestational Diabetes Mellitus (GDM): Screening and Management
Screen all pregnant women at 24-28 weeks with a 75 g oral glucose tolerance test, or earlier when risk factors such as obesity or previous GDM exist. First-line management is medical nutrition therapy with structured physical activity and daily glucose self-monitoring. If fasting or postprandial targets are repeatedly exceeded despite lifestyle measures, start insulin, with metformin as an accepted alternative in many guidelines. Monitor fetal growth because GDM drives macrosomia, and plan delivery around 38-39 weeks when medication is required. After delivery, insulin needs fall sharply; arrange a 75 g OGTT at 6-12 weeks postpartum because about half of women with GDM later develop type 2 diabetes.
SMLE Preparation Resources
Master the 2026 SMLE
Explore more clinical protocols in the SMLEREVISE Clinical Knowledge Library.
Try the QBank & Scaled Mocks