Question

A 28-year-old woman in her third trimester presents with jaundice, malaise, and elevated liver enzymes. Serology confirms Hepatitis E infection. Which of the following statements regarding Hepatitis E infection in pregnancy is true?

• A. Acute liver failure (ALF) is more severe in 1st trimester than 3rd trimester
• B. ALF is more common in pregnancy than in non-pregnant state
• C. Chronic liver disease is more common in pregnancy
• D. It is the most common cause of ALF worldwide

Hint:

Always associate Hepatitis E (HEV) with high mortality (up to 25%) specifically in pregnant women during their 3rd trimester due to fulminant hepatic failure (ALF).

Answer 1

The Correct Option is B

Concept:
The clinical scenario features a pregnant woman in her third trimester who acutely contracts a Hepatitis E Virus (HEV) infection.
The question tests the fundamental epidemiological and clinical understanding of how the physiological state of pregnancy dramatically alters the natural history and severity of an HEV infection.
Explanation:
• Hepatitis E Virus is an RNA virus transmitted primarily via the fecal-oral route, usually linked to contaminated water supplies in endemic developing regions.

• In the general, healthy, non-pregnant population, HEV usually presents as a mild, self-limiting acute viral hepatitis with an excellent overall prognosis and a case fatality rate of less than 1%.

• However, for reasons that are likely related to the profound immunological and hormonal shifts of gestation (such as elevated estrogen, progesterone, and hCG levels promoting viral replication), HEV exhibits a notoriously aggressive and fulminant clinical course specifically in pregnant women.

• Pregnant women, particularly those infected during the second and third trimesters, are at an extraordinarily high risk of rapidly developing Acute Liver Failure (ALF), previously termed fulminant hepatic failure.

• The mortality rate for pregnant women who contract HEV and progress to ALF can be devastatingly high, reaching 20% to 25%.

• Therefore, the statement that ALF is significantly more common and severe in the pregnant state compared to the non-pregnant state (Option B) is absolutely correct and represents a classic, high-yield board fact.

• Option A is incorrect because the severity and incidence of ALF peak in the 3rd trimester, not the 1st.

• Option C is incorrect; HEV generally does not lead to chronic liver disease in pregnancy. Chronic HEV is primarily a concern only in severely immunosuppressed patients, such as solid organ transplant recipients.

• Option D is factually incorrect; globally, viral Hepatitis B and various drug toxicities (like Acetaminophen overdose in Western nations) are far more common overall causes of ALF than HEV.
Final Answer:
Hepatitis E is uniquely dangerous during gestation; thus, Acute Liver Failure is significantly more common in pregnancy than in the non-pregnant state.