# Hepatitis E in Pregnancy

> Hepatitis E in pregnancy for NEET-PG Obstetrics and Gynaecology, covering third-trimester liver failure, ribavirin avoidance and supportive management.

- Canonical URL: https://prepelephant.com/topics/neet-pg/obstetrics-and-gynaecology/hepatitis-e-in-pregnancy
- Exam / course: NEET-PG · Subject: Obstetrics and Gynaecology
- Publisher: PrepElephant (https://prepelephant.com) — Prepared and reviewed by the PrepElephant Academic Review Team
- First published: 2026-10-08
- Last updated: 2026-10-08
- Reference basis: Dutta's Textbook of Obstetrics; Williams Obstetrics; Sherlock's Diseases of the Liver and Biliary System
- How to cite: "Hepatitis E in Pregnancy", PrepElephant, https://prepelephant.com/topics/neet-pg/obstetrics-and-gynaecology/hepatitis-e-in-pregnancy

## Direct answer

Hepatitis E infection in pregnancy carries a high risk of fulminant hepatic failure, particularly in the third trimester, with reported mortality substantially higher than in non-pregnant adults. The virus spreads by the faecal-oral route through contaminated water, and genotypes 1 and 2 cause the waterborne outbreaks seen in India. Management is supportive, ribavirin is avoided because it is teratogenic, and delivery timing is decided with hepatology and obstetric input.

## What you must remember

- **Transmission:** Faecal-oral route, usually through contaminated drinking water; outbreaks are common in endemic regions, including India.
- **Genotypes:** Genotypes 1 and 2 infect humans and cause the waterborne epidemics; genotypes 3 and 4 are mainly zoonotic.
- **Pregnancy risk:** Fulminant hepatic failure occurs most often in the third trimester, and maternal and fetal mortality are reported to be high.
- **Clinical picture:** Jaundice, nausea, anorexia, right upper quadrant pain and a sharp rise in transaminases; the diagnosis rests on anti-HEV IgM or HEV RNA.
- **Ribavirin:** Avoided in pregnancy because it is teratogenic, so the mother is managed with supportive care.
- **Differential:** Acute fatty liver of pregnancy, HELLP syndrome and other viral hepatitis; low glucose and raised ammonia favour acute fatty liver of pregnancy.
- **Prevention:** Safe drinking water, boiling, hand hygiene and safe food handling remain the main preventive measures.

## A pathway for acute hepatitis in late pregnancy

A pregnant woman with acute hepatitis is assessed as a possible fulminant case, because the outcome can change within days. The steps below set out the sequence.

1. **Confirm the diagnosis:** Anti-HEV IgM is positive in acute infection, and HEV RNA by PCR can be sent from serum or stool when the result is in doubt.
2. **Exclude the mimics:** Test for hepatitis A and B, and assess for pre-eclampsia, HELLP syndrome and acute fatty liver of pregnancy.
3. **Monitor for failure:** Track bilirubin, prothrombin time, glucose, creatinine and mental state; a rising INR with encephalopathy signals failure.
4. **Give supportive care:** Maintain glucose, correct coagulopathy, avoid nephrotoxic drugs and avoid high-dose paracetamol.
5. **Monitor the fetus:** Serial cardiotocography and growth scans guide the timing of delivery, because fetal compromise changes management.
6. **Escalate early:** Involve hepatology, critical care and transplant teams in fulminant failure, and decide delivery timing jointly.

## Where the examiner tries to catch you

Hepatitis E questions test the trimester risk and the drug that must be avoided.

- **Trap:** Prescribing ribavirin to a pregnant woman with hepatitis E — **Correct:** Ribavirin is teratogenic and is avoided, so management is supportive.
- **Trap:** Labelling third-trimester jaundice as acute fatty liver without testing for hepatitis E — **Correct:** The two can look alike, so anti-HEV serology should be checked before the diagnosis is settled.
- **Trap:** Reassuring the patient because the infection came early in pregnancy — **Correct:** The risk of fulminant failure is highest in the third trimester, so late pregnancy needs closer monitoring.

## Frequently asked questions

### Why is hepatitis E especially dangerous in the third trimester?

Hepatitis E is especially dangerous in the third trimester because fulminant hepatic failure is reported most often at that stage. Reported maternal and fetal mortality is substantially higher than in non-pregnant adults with the same infection.

### Why is ribavirin avoided in hepatitis E during pregnancy?

Ribavirin is avoided in hepatitis E during pregnancy because it is teratogenic and can harm the fetus. Management is therefore supportive, with close monitoring of liver function and clotting.

### How is hepatitis E transmitted in India?

Hepatitis E is transmitted by the faecal-oral route, most often through contaminated drinking water during waterborne outbreaks. Genotypes 1 and 2 are the human pathogens responsible for these outbreaks in India.

### How does acute fatty liver of pregnancy differ from hepatitis E?

Acute fatty liver of pregnancy is linked to low glucose, raised ammonia and coagulopathy, usually in the third trimester. Hepatitis E is confirmed by anti-HEV IgM or PCR, which helps distinguish it from fatty liver of pregnancy.