Postdatism is pregnancy equal to or more than

Correct Answer: B

Rationale: Postdatism refers to a pregnancy that extends beyond the normal gestation period of 280 days. The correct answer is B (294 days) as it is more than the standard 280-day term. Choice A (280 days) is the normal term, not postdatism. Choices C (290 days) and D (287 days) are also below the 294-day mark, making them incorrect for defining postdatism.

Correct Answer: C

Rationale: The correct answer is C: Mauriceau-Smellie-Veit maneuver for delivery of breech with an extended head. This maneuver involves flexing the head while still in the vagina to allow for easier delivery. The Burns Marshall maneuver (A) is for impacted fetal shoulders, Lovset maneuver (B) is for shoulder dystocia, and McRobert's maneuver (D) is for shoulder dystocia as well. The Mauriceau-Smellie-Veit maneuver is specifically designed for delivering a breech with an extended head, making it the correct choice in this scenario.

Correct Answer: B

Rationale: The correct answer is B because pressure applied on the cervix by the presenting part in obstructed labor leads to edema of the vulva. This pressure causes obstruction of blood and lymphatic flow in the area, resulting in swelling and edema. Prolonged effort by the mother (choice A) would not directly cause vulvar edema. An ill-fitting presenting part (choice C) may contribute to obstruction but does not explain the mechanism of edema. Large presenting diameters (choice D) stretching the vulva would not directly cause edema without pressure on the cervix.

Correct Answer: A

Rationale: The engaging diameter in a face presentation is the sub-mento vertical diameter. This is the correct answer because it represents the distance from the tip of the chin (mentum) to the highest point on the skull (vertex), which is the most critical diameter for the face to descend through the pelvis during childbirth. Choice B (Sub-mento bregmatic diameter) is incorrect because it represents the distance from the tip of the chin to the anterior fontanelle, not the highest point on the skull. Choice C (Mento vertical diameter) is incorrect because it refers to the distance from the chin to the base of the skull, not the highest point on the skull. Choice D (Sub-occipito bregmatic diameter) is incorrect because it represents the distance from the base of the skull to the anterior fontanelle, not involving the chin.

Correct Answer: C

Rationale: The correct answer is C: Occipito-posterior. This position occurs when the baby's head is facing forward but towards the mother's spine. This position can cause intense back pain during labor because the baby's head puts pressure on the mother's lower back. Occipito-anterior (A) is the most common and ideal position for labor. Transverse position (B) is when the baby is lying sideways, which may cause prolonged labor but not necessarily intense back pain. Occipito-lateral (D) is a less common position where the baby's head is facing sideways, which may not specifically cause intense back pain.