The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 30-year-old primigravid woman at 22 weeks' gestation is brought to the emergency department by her husband for lethargy, nausea, and vomiting for 4 days. This morning she became drowsy. She returned from a business trip to Sudan 3 weeks ago. She denies eating any seafood while traveling. Medications include iron supplements and a multivitamin. Her immunizations are up-to-date and she has never received blood products. Her temperature is 38.9°C (102°F), pulse is 92/min, and blood pressure is 122/76 mm Hg. She is oriented to person and place. Examination shows jaundice and mild asterixis. Pelvic examination shows a uterus consistent in size with a 22-week gestation. Laboratory studies show: Hemoglobin 11.2 g/dL Prothrombin time 18 sec (INR=2.0) Serum Total bilirubin 4.4 mg/dL Alkaline phosphatase 398 U/L AST 4,702 U/L ALT 3,551 U/L Lactate dehydrogenase 3,412 U/L Anti-nuclear antibody negative Anti-smooth muscle antibody negative Anti-CMV antibody negative Anti-EBV nuclear antigen antibody negative An ELISA for HIV is negative. Which of the following is most likely to confirm the diagnosis?"   (A) HBsAg   (B) Anti-HAV IgG   (C) Anti-HCV IgG   (D) Anti-HEV IgM
['(D) Anti-HEV IgM <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) HBsAg \n (B) Anti-HAV IgG \n (C) Anti-HCV IgG \n (D) Anti-HEV IgM <> possible answers', '  A 30-year-old primigravid woman at 22 weeks\' gestation is brought to the emergency department by her husband for lethargy, nausea, and vomiting for 4 days. This morning she became drowsy. She returned from a business trip to Sudan 3 weeks ago. She denies eating any seafood while traveling. Medications include iron supplements and a multivitamin. Her immunizations are up-to-date and she has never received blood products. Her temperature is 38.9°C (102°F), pulse is 92/min, and blood pressure is 122/76 mm Hg. She is oriented to person and place. Examination shows jaundice and mild asterixis. Pelvic examination shows a uterus consistent in size with a 22-week gestation. Laboratory studies show:\nHemoglobin 11.2 g/dL\nProthrombin time 18 sec (INR=2.0)\nSerum\nTotal bilirubin 4.4 mg/dL\nAlkaline phosphatase 398 U/L\nAST 4,702 U/L\nALT 3,551 U/L\nLactate dehydrogenase 3,412 U/L\nAnti-nuclear antibody negative\nAnti-smooth muscle antibody negative\nAnti-CMV antibody negative\nAnti-EBV nuclear antigen antibody negative\nAn ELISA for HIV is negative. Which of the following is most likely to confirm the diagnosis?" <> context@']