Nokea
Which explains why infants who are delivered via cesarean section before the start of labor have more difficulty transitioning to extrauterine life?
- A. The use of warm IV fluids precipitates hyperthermia.
- B. Regional anesthesia causes respiratory depression.
- C. The maternal left tilt position reduces placental blood flow.
- D. Residual amniotic fluid in the lungs makes spontaneous respirations difficult.
Correct Answer: D
Rationale: The correct answer is D because residual amniotic fluid in the lungs can lead to a condition called transient tachypnea of the newborn (TTN), making spontaneous respirations difficult. This occurs more commonly in infants born via cesarean section before the onset of labor as they may not have had the opportunity to expel the fluid through the vaginal passage. A: Warm IV fluids can help maintain normal body temperature. B: Regional anesthesia may not directly cause respiratory depression in the infant. C: Maternal left tilt position is used to improve blood flow during labor, not relevant to respiratory issues in the newborn.
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Arrange the seven cardinal movements of labor, in order.
- A. Descent
- B. Expulsion
- C. Extension
- D. External rotation
Correct Answer: A
Rationale: The correct order of cardinal movements of labor is:
1. Engagement
2. Descent
3. Flexion
4. Internal rotation
5. Extension
6. Restitution
7. External rotation
Engagement occurs first as the fetal presenting part enters the maternal pelvis. Descent is the second cardinal movement, where the fetus moves down the birth canal. Flexion follows, allowing the smallest diameter of the fetal head to present. Internal rotation positions the fetus for delivery. Extension occurs next, facilitating the passage of the head through the birth canal. Restitution aligns the fetal head with the shoulders. External rotation allows the shoulders to rotate for delivery. Therefore, Descent is the correct first cardinal movement in the sequence. Other choices like Expulsion, Extension, and External rotation occur later in the process and are not in the correct order.
Why is precipitous labor most often seen in multiparous women?
- A. The cervix weakens after each delivery.
- B. The cervix can dilate and efface simultaneously.
- C. The multigravida uterus is better able to coordinate muscle movements.
- D. It is more difficult for multiparous women to know when labor begins.
Correct Answer: C
Rationale: Step 1: In multiparous women, the uterus has gone through labor before, making muscle coordination more efficient.
Step 2: Efficient muscle coordination helps in effective contractions, leading to faster labor progress.
Step 3: Multiparous women have experienced labor before, allowing the uterus to contract more effectively.
Step 4: This efficiency in muscle coordination is why precipitous labor is more often seen in multiparous women.
Summary:
A: The weakening of the cervix after each delivery is not a direct cause of precipitous labor.
B: The ability of the cervix to dilate and efface simultaneously does not explain why precipitous labor is more common in multiparous women.
D: The difficulty in knowing when labor begins is not a reason for the occurrence of precipitous labor in multiparous women.
On admission to the labor and birth unit, a 38-year-old female, gravida 4, para 3, at term in early labor is found to have a transverse lie on vaginal examination. What is the priority intervention at this time?
- A. Perform a vaginal exam to denote progress.
- B. Notify the health care provider.
- C. Initiate parenteral therapy.
- D. Apply oxygen via nasal cannula at 8 L/minut
Correct Answer: B
Rationale: The correct answer is B: Notify the health care provider. This is the priority intervention because a transverse lie is a malpresentation that can lead to complications during labor and delivery. The healthcare provider needs to be informed immediately to determine the best course of action, which may include attempting to manually rotate the baby or preparing for a cesarean section. Performing a vaginal exam (A) can be dangerous and should be avoided in cases of transverse lie. Initiating parenteral therapy (C) and applying oxygen (D) are not priorities in this situation as addressing the malpresentation is more urgent.
A fetus is positioned in a longitudinal lie with its head in the fundus with both hips and knees flexed. Which presentation is this known as?
- A. Frank breech
- B. Complete breech
- C. Vertex
- D. Transverse
Correct Answer: B
Rationale: The correct answer is B: Complete breech. In a complete breech presentation, the fetus is positioned with its head in the fundus, hips flexed, and knees flexed. This position is unique to the complete breech presentation. A: Frank breech would have the hips flexed, but the knees extended. C: Vertex position is when the head is down towards the birth canal. D: Transverse is when the fetus is lying horizontally across the uterus. Therefore, based on the description provided in the question, the correct answer is B as it matches the specific presentation described.
Which criteria should be verified prior to vacuum or forceps use? Select all that apply.
- A. The woman’s bladder is empty.
- B. The fetus must be at least 34 weeks gestation.
- C. There is a Category I tracing.
- D. The cervix must be completely dilated.
Correct Answer: B
Rationale: The correct answer is B: The fetus must be at least 34 weeks gestation. This is because using vacuum or forceps delivery before 34 weeks gestation can increase the risk of complications for both the mother and the baby. For the other choices:
A: The woman’s bladder being empty is not a specific criteria for vacuum or forceps use.
C: A Category I tracing is related to fetal heart monitoring and does not directly impact the decision to use vacuum or forceps.
D: While it is ideal for the cervix to be completely dilated before vacuum or forceps use, it is not the primary criteria to be verified.