Correct Answer: B

Rationale: The correct answer is B: Face presentation. Vaginal delivery is possible in face presentation as the fetus is in a position where the face is presenting first, allowing for delivery. In this presentation, the chin is usually tucked onto the chest, making it easier for the baby's head to pass through the birth canal. A: Brow presentation is incorrect because it indicates the baby's head is extended slightly, making it more difficult for vaginal delivery. C: Shoulder presentation is incorrect as it can lead to a shoulder dystocia, making vaginal delivery dangerous and difficult. D: Unstable lie is incorrect because it refers to the baby being in a transverse position, making vaginal delivery impossible without intervention.

Correct Answer: A

Rationale: Grade 1 cardiac disease refers to early-stage or mild heart conditions that are not yet severe. Choice A, "Organic disease," is the correct answer as it encompasses a broad category of structural heart abnormalities. Mitral stenosis (B) and ventricular failure (C) are specific conditions that can be present in cardiac disease but do not represent the general term for grade 1. Vascular disease (D) primarily refers to conditions affecting blood vessels, not the heart itself. In summary, choice A is correct because it is a comprehensive term that includes various structural heart abnormalities typically found in grade 1 cardiac disease, while the other choices are either too specific or unrelated to the concept of grade 1 cardiac disease.

Correct Answer: B

Rationale: The correct answer is B: Placental insufficiency. Prolonged pregnancy can lead to decreased placental function, resulting in inadequate oxygen and nutrients for the fetus. This can lead to complications such as intra-uterine growth restriction and fetal distress. Option A (Intra-uterine oligohydramnios) is a consequence of decreased amniotic fluid levels but not directly associated with prolonged pregnancy. Option C (Fetal post-maturity syndrome) refers to the complications seen in a post-term newborn, not maternal risks. Option D (Large for gestational age baby) is a consequence of prolonged pregnancy but does not directly impact maternal health.

Correct Answer: D

Rationale: The correct answer is D: Escherichia coli. During puerperium, the most common causative organism of urinary tract infection is E. coli. This is because E. coli is a normal flora in the gastrointestinal tract and can ascend to the urinary tract due to factors like hormonal changes, reduced bladder tone, and trauma during delivery. Staphylococcus pyogenes (Choice A), Anaerobic streptococci (Choice B), and Clostridium welchii (Choice C) are not typically associated with urinary tract infections during puerperium. Staphylococcus pyogenes is more commonly known for causing skin infections, Anaerobic streptococci are not commonly implicated in urinary tract infections, and Clostridium welchii is associated with gas gangrene, not urinary tract infections.

Correct Answer: A

Rationale: The correct answer is A: Epidural hematoma. 1. Sudden rotational injuries can cause tearing of the middle meningeal artery, leading to an epidural hematoma. 2. The hematoma can compress the brain, disrupting the reticular activating system, causing altered consciousness. 3. Uncal herniation (B) involves herniation of the uncus, not rotation-related. 4. Concussion (C) is a mild traumatic brain injury, not directly related to rotational injuries. 5. Contrecoup injury (D) is when the brain impacts the opposite side of the skull due to sudden deceleration, not rotation-induced.