Correct Answer: B

Rationale: The correct answer is B: Captopril. Captopril is an angiotensin-converting enzyme (ACE) inhibitor that can lead to oligohydramnios in pregnant women due to its effect on reducing fetal renal function. This can result in decreased amniotic fluid levels. Diazepam (A) is a benzodiazepine used for anxiety and is not associated with oligohydramnios. Ampicillin (C) is an antibiotic commonly used during pregnancy and does not cause oligohydramnios. Pethidine (D) is an opioid analgesic with no known association with oligohydramnios in pregnancy.

Correct Answer: A

Rationale: The correct answer is A: TRUE. Uterine atony is the most common cause of immediate postpartum hemorrhage due to inadequate uterine contraction to control bleeding. This is supported by research and clinical evidence. Trauma to the genital tract is a less common cause and usually leads to delayed hemorrhage. Choice B is incorrect as uterine atony is a well-documented primary cause. Choice C is incorrect as uterine atony is consistently the leading cause. Choice D is incorrect as the cause of immediate postpartum hemorrhage is clear, with uterine atony being the most common culprit.

Correct Answer: A

Rationale: Step-by-step rationale for why choice A is correct: 1. Pregnancy can lead to severe anaemia due to increased demand for iron and folate. 2. Pregnancy-induced physiological changes can exacerbate malaria-related anaemia. 3. Severe jaundice may occur in pregnant women with malaria due to liver dysfunction. 4. These effects are common during pregnancy and can worsen with malaria infection. Summary of why other choices are incorrect: - Choice B: Blood smear positivity is not always guaranteed in malaria, and severe anaemia is not the only effect. - Choice C: Therapy limitations can occur, but the presence of few parasites in severe cases is not a defining feature. - Choice D: Loss of pregnancy can happen, but it is not a universal effect of malaria during pregnancy, and severity is not based on parasite count alone.

Correct Answer: B

Rationale: The correct answer is B: Tonic. During the tonic stage of eclampsia, the muscles go into a prolonged contraction leading to an arched back and tightly clenched teeth. This is due to sustained muscle rigidity. In contrast, the clonic stage involves rhythmic muscle contractions and relaxations, not sustained rigidity. The premonitory stage is characterized by warning signs like headaches and visual disturbances, not specific physical postures. Coma is a severe stage of unconsciousness, not associated with specific physical postures or muscle rigidity seen in the tonic stage of eclampsia.

Correct Answer: D

Rationale: The correct answer is D: Placental insufficiency. A bipartite placenta and succenturiate lobe are structural abnormalities that can lead to placental insufficiency. This is because these conditions can interfere with proper blood flow and nutrient exchange between the mother and fetus, resulting in decreased oxygen and nutrients reaching the fetus, leading to placental insufficiency. Placental abruption (choice A), placental calcification (choice B), and placenta previa (choice C) are not directly associated with bipartite placenta or succenturiate lobe and do not specifically cause placental insufficiency.