Correct Answer: C

Rationale: The Mauriceau-Smellie-Veit maneuver is the correct answer for delivering the head in a breech presentation. This maneuver involves applying pressure to the fetal head with the fingers in the mouth to flex the head, guiding it through the pelvis. This technique helps prevent hyperextension of the head and facilitates a safe delivery. The Lovset maneuver involves rotating the fetus to disengage the impacted shoulder, not for delivering the head. The Burns Marshall Method is used for delivering the aftercoming head in a breech presentation. The Reverse woodscrew maneuver is a technique to disimpact a shoulder dystocia, not for delivering the head in a breech presentation.

Correct Answer: D

Rationale: The correct answer is D. A ruptured uterus can lead to fetal distress and necessitate a cesarean section. Failure of the cervix to dilate is indicative of a potential uterine rupture, as the uterus may not be able to contract effectively due to the rupture. Maternal dehydration (A), pyrexia (B), and oliguria (C) are not specific signs of a ruptured uterus and may be present in various other conditions. Therefore, failure of the cervix to dilate is the most relevant early sign in this scenario.

Correct Answer: D

Rationale: The correct answer is D, complete rupture of the uterus. This is an obstetric emergency due to the risk of severe bleeding and potential harm to both the mother and the fetus. A ruptured uterus can lead to life-threatening complications such as hemorrhage and shock. In contrast, options A, B, and C are not considered obstetric emergencies. Aftercoming head in breech, complete cephalic presentation, and complete breech presentation are normal variations in labor that do not typically require immediate intervention like a ruptured uterus does.

Correct Answer: D

Rationale: The use of bed cradle in leg thrombosis management is to promote venous drainage. Elevating the legs on a bed cradle helps improve blood flow back to the heart, reducing swelling and preventing blood clots. Keeping the legs straight (A) is not the main purpose. Preventing embolism (B) is important but not the direct purpose of a bed cradle. Controlling body temperature (C) is unrelated to the use of a bed cradle for leg thrombosis.

Correct Answer: B

Rationale: Iron supplementation benefits pregnancy by correcting or preventing iron deficiency anemia in the mother. Anemia can lead to various complications for the mother and baby. Iron is essential for the production of hemoglobin, which carries oxygen to tissues. Therefore, by reducing anemia, iron supplementation ensures optimal oxygen delivery to both the mother and the developing fetus. This ultimately supports healthy pregnancy outcomes. Explanation for other choices: A: Iron supplementation does not directly increase fetal blood flow. C: While iron deficiency may increase the risk of miscarriage, iron supplementation alone does not prevent miscarriages. D: Iron is not directly involved in fetal bone growth, so iron supplementation does not enhance this aspect of fetal development.