The main clinical feature in hyperemesis gravidarum is

Correct Answer: A

Rationale: The correct answer is A: Persistent vomiting or nausea. Hyperemesis gravidarum is a severe form of morning sickness characterized by persistent vomiting and nausea during pregnancy. This is the main clinical feature due to hormonal changes and increased sensitivity to certain odors. Choice B is incorrect as sight-related problems are not a typical feature of hyperemesis gravidarum. Choice C is incorrect as persistent diarrhea is not a defining feature of this condition. Choice D is incorrect as frequency or urgency of micturition is not a primary symptom of hyperemesis gravidarum.

Correct Answer: C

Rationale: The correct answer is C, Couvelaire uterus. This condition is characterized by a bruised and edematous appearance of the uterus due to severe placental abruption. The rationale is that a Couvelaire uterus specifically refers to this presentation, while the other choices do not. A: Wernicke's encephalopathy is a neurological disorder caused by thiamine deficiency. B: Uterine prolapse is the descent or herniation of the uterus into or beyond the vagina. D: Asherman's syndrome involves intrauterine adhesions leading to menstrual irregularities.

Correct Answer: D

Rationale: The correct answer is D because placenta praevia can lead to severe bleeding during childbirth, posing high risks to both the mother and the baby. This condition occurs when the placenta partially or completely covers the cervix, leading to bleeding as the cervix dilates during labor. Choice A is incorrect because bleeding in placenta praevia is not related to the segment preparing for labor. Choice B is incorrect as bleeding is primarily due to the abnormal placement of the placenta, not from pathological processes. Choice C is incorrect as bleeding can occur before 37 weeks in cases of placenta praevia.

Correct Answer: C

Rationale: The correct answer is C: Four weekly up to 28 weeks. Gestational diabetes requires close monitoring of blood sugar levels and fetal well-being. ANC care every four weeks up to 28 weeks ensures proper management and early detection of any complications. Weekly or two weekly visits (options A and B) may be too frequent and unnecessary at this stage unless there are specific concerns. Three weekly visits (option D) may not provide adequate monitoring intervals. Therefore, option C is the most appropriate choice for the optimal management of gestational diabetes at this stage of pregnancy.

Correct Answer: C

Rationale: The correct answer is C: Magnesium sulphate. It is the drug of choice in managing eclampsia due to its ability to prevent and control seizures. Magnesium sulfate is a central nervous system depressant that reduces neuronal excitability and neuromuscular transmission, thus preventing seizures. It also helps in lowering blood pressure and preventing complications. Phenobarbitone (A) is not the first-line treatment for eclampsia. Calcium gluconate (B) is used for calcium deficiency, not eclampsia. Sodium bicarbonate (D) is used to correct acidosis, not for managing eclampsia.