Nokea
The presenting diameter in brow presentation is
- A. Submentobregmatic
- B. Suboccipitofrontal
- C. Occipitalfrontal
- D. Mentovertical
Correct Answer: A
Rationale: The presenting diameter in brow presentation is Submentobregmatic (choice A) because it refers to the distance from the submentum (chin) to the bregma (anterior fontanelle). This is the appropriate measurement for the brow presentation as the brow is the prominent part between the forehead and the chin.
Choice B (Suboccipitofrontal) is incorrect because it refers to the distance from the subocciput to the frontal bone, which is not relevant to brow presentation.
Choice C (Occipitalfrontal) is incorrect because it describes the distance from the occiput to the frontal bone, which again is not specific to brow presentation.
Choice D (Mentovertical) is incorrect as it denotes the distance from the chin to the vertex, which is not the relevant measurement for brow presentation.
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How can folic acid supplementation prevent neural tube defects?
- A. By promoting spinal cord closure
- B. By preventing infections
- C. By enhancing fetal growth
- D. By regulating blood sugar levels
Correct Answer: A
Rationale: The correct answer is A because folic acid supplementation plays a crucial role in promoting spinal cord closure during fetal development, preventing neural tube defects. Folic acid helps in the formation of neural tube structures, ensuring proper closure and preventing defects like spina bifida. Choices B, C, and D are incorrect as preventing infections, enhancing fetal growth, and regulating blood sugar levels are not direct mechanisms through which folic acid prevents neural tube defects.
Chemical diabetes mellitus is a classification based on
- A. Symptom are absent and abnormal specific laboratory results
- B. Presence of symptoms and abnormal specific laboratory results
- C. Previous congenital abnormalities and unexplained stillbirth
- D. Previous birth of a baby weighing >4.3kg and spontaneous abortion
Correct Answer: A
Rationale: The correct answer is A: Symptom are absent and abnormal specific laboratory results. Chemical diabetes mellitus refers to a condition where there are abnormal specific laboratory results indicating diabetes without the presence of any symptoms. This classification is based on objective data from laboratory tests rather than subjective symptoms. Choices B, C, and D are incorrect as they do not align with the definition of chemical diabetes mellitus, which focuses on laboratory results rather than symptoms, congenital abnormalities, or pregnancy outcomes.
The presenting diameters in face presentation are
- A. Submentovertival, bitemporal
- B. Submentobregmatic, bitemporal
- C. Submentobregmatic, biparietal
- D. Mentovertical, bitemporal
Correct Answer: A
Rationale: The correct answer is A: Submentovertival, bitemporal. In a face presentation, the presenting diameters are submentovertival (chin to vertex) and bitemporal (temple to temple). This is because the fetus is in a face-first position with the chin presenting first. Option B is incorrect because submentobregmatic is not a recognized presenting diameter in face presentation. Option C is incorrect as biparietal refers to the widest transverse diameter of the fetal head, not relevant in face presentation. Option D is incorrect as mentovertical is not a valid presenting diameter in face presentation.
What are the symptoms of a urinary tract infection (UTI) during pregnancy?
- A. Painful urination
- B. Increased frequency of urination
- C. Lower abdominal pain
- D. All of the above
Correct Answer: D
Rationale: The correct answer is D (All of the above) because during pregnancy, UTI symptoms include painful urination, increased frequency of urination, and lower abdominal pain. Painful urination is a common symptom due to inflammation of the urinary tract. Increased frequency of urination is caused by the pressure of the growing uterus on the bladder. Lower abdominal pain can also occur due to the infection. Therefore, all these symptoms are indicative of a UTI during pregnancy. Other choices are incorrect as they do not encompass the comprehensive range of symptoms typically seen in a UTI during pregnancy.
Vaginal delivery is possible in
- A. Brow presentation
- B. Face presentation
- C. Shoulder presentation
- D. Unstable lie
Correct Answer: B
Rationale: The correct answer is B: Face presentation. Vaginal delivery is possible in face presentation as the baby's head is extended, allowing for descent through the birth canal. Brow presentation (A) and shoulder presentation (C) may require cesarean delivery due to the atypical presentation of the baby. Unstable lie (D) refers to the baby being in a transverse position, which also necessitates a cesarean section. Face presentation is the only option where vaginal delivery may be possible due to the extended position of the baby's head.