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During the delivery, which fetal position would be considered optimal for a vaginal birth?

A.

Occiput anterior.

B.

Occiput posterior.

C.

Breech.

D.

Transverse.

Answer and Explanation

The Correct Answer is A

Choice A rationale

 

The occiput anterior (OA) position is considered the optimal fetal position for vaginal birth. In this position, the baby’s head is down, and the back of the head (occiput) is facing the mother’s front. This position allows for the most efficient passage through the birth canal.

 

Choice B rationale

 

The occiput posterior (OP) position, where the baby’s head is down but facing the mother’s back, can lead to a longer and more painful labor. It is not considered optimal for vaginal birth.

 

Choice C rationale

 

Breech positions, where the baby’s buttocks or feet are positioned to come out first, are not optimal for vaginal birth and often require a cesarean section due to the increased risk of complications.

 

Choice D rationale

 

The transverse position, where the baby is lying sideways across the uterus, is not suitable for vaginal birth. This position typically requires a cesarean section to safely deliver the baby.


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View Related questions

Correct Answer is B

Explanation

Choice A rationale

Magnetic Resonance Imaging (MRI) is a non-invasive imaging technique that provides detailed images of the fetus and placenta. However, it is not typically used as the first-line test for assessing placental perfusion and IUGR. Doppler flow studies are more specific for evaluating blood flow and detecting issues related to placental insufficiency.

Choice B rationale

Doppler flow studies are non-invasive tests that assess blood flow in the umbilical artery and other fetal vessels. These studies are particularly useful in evaluating placental perfusion and identifying intrauterine growth restriction (IUGR). Abnormal Doppler flow patterns can indicate compromised blood flow to the fetus, which is a concern in cases of minimal fetal growth.

Choice C rationale

Amniocentesis is an invasive procedure that involves extracting a sample of amniotic fluid for genetic testing and assessment of fetal lung maturity. It is not used for evaluating placental perfusion or IUGR7.

Choice D rationale

Chorionic villus sampling (CVS) is an invasive procedure used for early genetic testing by sampling placental tissue. It is not used for assessing placental perfusion or IUGR7.

Correct Answer is B

Explanation

Choice A rationale

Variable decelerations are not related to the use of narcotic analgesics. Narcotic analgesics can cause other fetal heart rate changes, such as decreased variability, but they do not cause variable decelerations.

Choice B rationale

Variable decelerations are due to umbilical cord compression. This is the correct interpretation. Umbilical cord compression can lead to transient decreases in fetal blood flow and oxygenation, resulting in variable decelerations on the fetal monitor tracing.

Choice C rationale

Variable decelerations are not caused by maternal hypotension. Maternal hypotension can lead to late decelerations due to uteroplacental insufficiency, but it does not cause variable decelerations.

Choice D rationale

Variable decelerations are not indicative of fetal hypoxia. While severe and persistent variable decelerations can lead to fetal hypoxia, the primary cause of variable decelerations is umbilical cord compression.

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