Nokea
Placenta praevia is also referred to as unavoidable haemorrhage because
- A. Bleeding results as the segment prepares for true labour
- B. Bleeding results from pathological processes of the placenta
- C. Bleeding always occurs after a gestation of 37 complete weeks
- D. Of the high morbidity and mortality rate to the mother and neonate
Correct Answer: D
Rationale: The correct answer is D because placenta praevia can lead to severe bleeding during childbirth, posing high risks to both the mother and the baby. This condition occurs when the placenta partially or completely covers the cervix, leading to bleeding as the cervix dilates during labor. Choice A is incorrect because bleeding in placenta praevia is not related to the segment preparing for labor. Choice B is incorrect as bleeding is primarily due to the abnormal placement of the placenta, not from pathological processes. Choice C is incorrect as bleeding can occur before 37 weeks in cases of placenta praevia.
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The main clinical feature in hyperemesis gravidarum is
- A. Persistent vomiting or nausea
- B. Persistent sight-related problems
- C. Persistent diarrhoea and vomiting
- D. Frequency or urgency of micturition
Correct Answer: A
Rationale: The correct answer is A: Persistent vomiting or nausea. Hyperemesis gravidarum is a severe form of morning sickness characterized by persistent vomiting and nausea during pregnancy. This is the main clinical feature due to hormonal changes and increased sensitivity to certain odors. Choice B is incorrect as sight-related problems are not a typical feature of hyperemesis gravidarum. Choice C is incorrect as persistent diarrhea is not a defining feature of this condition. Choice D is incorrect as frequency or urgency of micturition is not a primary symptom of hyperemesis gravidarum.
A cause of shoulder presentation is
- A. Macerated fetus
- B. Postdates pregnancy
- C. Oligohydramnios
- D. Placenta abruption
Correct Answer: C
Rationale: The correct answer is C: Oligohydramnios. Shoulder presentation occurs when the baby presents shoulder-first rather than head-first during birth. Oligohydramnios, a condition characterized by low levels of amniotic fluid, can lead to decreased uterine space, increasing the chances of abnormal fetal positioning. Macerated fetus (A) is associated with fetal decomposition, not shoulder presentation. Postdates pregnancy (B) is linked to increased risk of macrosomia but not shoulder presentation. Placenta abruption (D) is a separation of the placenta from the uterus, not a direct cause of shoulder presentation.
The progression of coronary artery plaque formation can lead to a variety of pathologic conditions. When subtotal plaque disruption occurs resulting in vasoconstriction, platelet activation, and embolization, it most commonly causes which clinical phenomenon?
- A. Endothelial cell dysfunction
- B. Prinzmetal’s angina
- C. Transmural myocardial infarction
- D. Non-ST elevation myocardial infarction
Correct Answer: C
Rationale: The correct answer is C: Transmural myocardial infarction. Subtotal plaque disruption leads to vasoconstriction, platelet activation, and embolization, causing complete occlusion of a coronary artery. This results in ischemia of the entire thickness of the myocardial wall, leading to transmural myocardial infarction. Endothelial cell dysfunction (A) is an early event in atherosclerosis but does not directly result from subtotal plaque disruption. Prinzmetal's angina (B) is caused by transient coronary artery spasm rather than plaque disruption. Non-ST elevation myocardial infarction (D) involves incomplete blockage of a coronary artery and typically does not result from subtotal plaque disruption.
T. O. is a 44-year-old female patient who presents for evaluation of sudden, severe upper abdominal pain. She is clear about the onset, which was profound and occurred approximately one hour ago. She denies that the onset had any relationship to food or eating, and she denies nausea or vomiting. On examination, she is lying on her right side with her hips and knees flexed to draw her knees to her chest. Vital signs are stable, but examination reveals involuntary guarding. The abdomen is painful and tympanic to percussion in all quadrants. CBC reveals a white blood cell count of 15,600L. The AGACNP suspects
- A. Dissecting aortic aneurysm
- B. Acute pancreatitis
- C. Perforated peptic ulcer
- D. Mallory-Weiss tear
Correct Answer: B
Rationale: The correct answer is B: Acute pancreatitis. The clinical presentation of sudden, severe upper abdominal pain not related to food intake, along with the patient's position (lying on right side with hips and knees flexed), and presence of involuntary guarding suggest acute pancreatitis. The elevated white blood cell count indicates an inflammatory process. Dissecting aortic aneurysm (A) typically presents with abrupt, severe chest or back pain radiating to the abdomen, with signs of shock. Perforated peptic ulcer (C) presents with sudden, severe abdominal pain often related to food intake, with signs of peritonitis. Mallory-Weiss tear (D) presents with hematemesis after forceful or prolonged vomiting.
Mechanism of labor in left occipito-posterior position:
- A. Descent, engagement, flexion, internal rotation
- B. Extension, engagement, internal rotation, external rotation
- C. Flexion, descent, external rotation
- D. Descent, engagement, extension
Correct Answer: A
Rationale: The correct answer is A: Descent, engagement, flexion, internal rotation. In left occipito-posterior position, the fetus descends into the pelvis, engages in the maternal pelvis, undergoes flexion to fit through the birth canal, and internally rotates to align with the pelvis for delivery.
Choice B (Extension, engagement, internal rotation, external rotation) is incorrect because extension is not typically seen in occipito-posterior positions. Choice C (Flexion, descent, external rotation) is incorrect because external rotation is not part of the mechanism in this position. Choice D (Descent, engagement, extension) is incorrect because extension is not typically seen in this position.