Correct Answer: B

Rationale: Step 1: TB can be transmitted through respiratory droplets, not just during labor. Step 2: Mother with active TB can transmit the bacteria to the child during childbirth. Step 3: Therefore, the statement that mother-to-child transmission never occurs during labor is false. Summary: Choice B is correct because TB transmission can occur during labor, making Choice A incorrect. Choices C and D are irrelevant.

Correct Answer: D

Rationale: Placental parasitation is associated with Malaria prenatally because the Plasmodium parasite can infect the placenta through the bloodstream, leading to severe complications for both the mother and the fetus. This infection can result in low birth weight, preterm birth, and even stillbirth. Candidiasis, Tuberculosis, and Multiple gestation are not directly associated with placental parasitation. Candidiasis is a fungal infection, Tuberculosis is a bacterial infection, and Multiple gestation refers to carrying more than one fetus during pregnancy. Therefore, the correct answer is D, Malaria prenatally, due to the direct impact of Plasmodium parasite on the placenta and its implications on pregnancy outcomes.

Correct Answer: B

Rationale: Step 1: Puerperal pyrexia refers to fever occurring after childbirth. Step 2: Causes can be obstetric (infection) or non-obstetric (e.g., urinary tract infection). Step 3: Non-obstetric causes are also common postpartum. Step 4: Therefore, puerperal pyrexia is not entirely obstetrically related. Step 5: Hence, the correct answer is B (FALSE).

Correct Answer: D

Rationale: The correct answer is D because deep transverse arrest occurs when the level of the occiput and the sinciput is the same, leading to a failure of descent of the fetal head through the pelvis. This alignment issue hinders the progress of labor despite adequate contractions. A: Incorrect. Flexion being well maintained is not a defining characteristic of deep transverse arrest. B: Incorrect. While strong uterine contractions can contribute to labor challenges, deep transverse arrest is specifically related to the alignment of the fetal head. C: Incorrect. The curvature of the sacrum is not directly related to deep transverse arrest.

Correct Answer: C

Rationale: The correct answer is C: Truncus arteriosus. In this congenital heart defect, a single large blood vessel arises from the heart instead of the normal two separate vessels (aorta and pulmonary artery). This results in mixing of oxygenated and deoxygenated blood, leading to severe cyanosis and inadequate oxygen supply to the body. This condition is incompatible with life, causing immediate death after birth. A: Pulmonary stenosis and B: Aortic coarctation are also congenital heart defects but do not typically result in immediate death after birth. Pulmonary stenosis obstructs blood flow to the lungs, while aortic coarctation causes narrowing of the aorta. D: Ductus arteriosus is a normal fetal blood vessel that connects the pulmonary artery and the aorta but usually closes shortly after birth. Failure of closure can lead to health issues, but it is not typically a cause of immediate death after birth.