Correct Answer: D

Rationale: The correct answer is D. TB in pregnancy can lead to premature labor due to the fever experienced. Fever increases the risk of premature labor by triggering uterine contractions. Poor maternal appetite (A) and severe anemia (B) may impact the mother's health but are not directly linked to premature labor. Adverse reactions of anti-TB drugs (C) could potentially affect the mother's health but are not a direct cause of premature labor.

Correct Answer: B

Rationale: The correct answer is B: Cephalopelvic disproportion. This condition occurs when the baby's head is too large to pass through the mother's pelvis during labor. This leads to obstructed labor, causing complications for both the mother and the baby. Maternal exhaustion (A) may occur as a result of prolonged labor but is not the primary cause of obstructed labor. Microsomic fetus (C) refers to a small baby and would not typically cause obstructed labor. Fetal exsanguination (D) is the loss of blood from the fetus and is not a common cause of obstructed labor. Cephalopelvic disproportion is the most common reason for obstructed labor as it directly affects the passage of the baby through the birth canal.

Correct Answer: A

Rationale: The correct answer is A: Tympany. Tenderness to percussion is analogous to tympany as both indicate the presence of gas-filled structures. When a patient experiences tenderness to percussion in the abdomen, it suggests that there is gas or air present in the abdomen, leading to a hollow, drum-like sound upon percussion, which is characteristic of tympany. Guarding (B) is the involuntary contraction of abdominal muscles to protect the underlying organs, not related to percussion. Rebound tenderness (C) is the pain experienced when pressure is released during palpation, not percussion. Somatic pain (D) refers to pain originating from the skin, muscles, or bones, not related to percussion findings.

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: The correct answer is D: Prevent excessive traction being applied. This is because in a breech delivery, excessive traction can lead to complications such as fetal injuries or umbilical cord prolapse. The midwife should avoid pulling on the baby's legs or body to prevent undue stress on the baby. The other choices are incorrect because: A: Ascertain the fetal wellbeing in utero - this is typically done through other means such as fetal monitoring. B: Allow enough room for the fetus to pass - this should be done by ensuring proper positioning and allowing natural descent. C: Allow gravitating descent of the fetus - this is not a recommended practice as it can cause complications.