This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': 'A woman presents with leakage of fluid per vaginum and meconium stained liquor at 34 weeks of gestation. The most likely organism causing infection would be: \nSelect and explain. \nA. Listeria monocytogenes, B. Toxoplasmosis, C. CMV, D. Herpes', 'role': 'user'}, {'content': "Answer: A \nExplanation: Patient with leakage of fluid and meconium stained liquor at 34 weeks of gestation is suffering from preterm premature rupture of membrane (PROM). Infections play a major role in the premature rupture of membrane. Most commonly found organisms were trichomonas vaginalis, Chlamydia trachomatis, mycoplasma, group B streptococci and other bacteria. From the options listed in the question only listeria monocytogens is a bacteria, so it is the cause of PROM in this patient. Ref: Harrison's Principles of Internal Medicine, 17th Edition, Page 897; Williams Obstetrics, 23rd Edition, Page 163, 1224; Textbook of Obstetrics By Padubidri, 1st Edition, 2006, Page 126; Avery's Diseases of the Newborn, 8th Edition, Page 556, 557", 'role': 'assistant'}]