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The patient with which vaginal exam is most at risk for an umbilical cord prolapse?
- A. 1-2 cm dilated, 70% effaced, -1 station
- B. 5 cm dilated, 60% effaced, -3 station
- C. 7-8 cm dilated, 80% effaced, -2 station
- D. 9 cm dilated, 100% effaced, 0 station
Correct Answer: B
Rationale: The correct answer is B because a patient who is 5 cm dilated, 60% effaced, and at -3 station is most at risk for umbilical cord prolapse. At this stage, the presenting part of the baby is relatively high in the pelvis, increasing the likelihood of the cord slipping past and becoming compressed against the cervix during contractions. This can lead to decreased blood flow and oxygen supply to the baby, posing a serious risk. Choices A, C, and D are less likely to result in cord prolapse due to the lower station of the baby in the pelvis, reducing the chance of cord compression.
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What makes up the powers of labor and birth?
- A. contractions and pushing efforts
- B. pelvis and pelvic floor tissues
- C. fetal position, attitude, lie, and presentation
- D. oxytocin
Correct Answer: A
Rationale: The correct answer is A: contractions and pushing efforts. During labor and birth, contractions help to dilate the cervix and push the baby down the birth canal. Pushing efforts from the mother help to expel the baby out. Pelvis and pelvic floor tissues (choice B) provide the passage for the baby but do not actively contribute to the powers of labor. Fetal position, attitude, lie, and presentation (choice C) refer to the baby's position and orientation in the womb, which can affect the progress of labor but do not constitute the powers of labor. Oxytocin (choice D) is a hormone that stimulates contractions but is not the sole component of the powers of labor and birth.
The nurse is caring for a 34-year-old gravida 4, para 3 experiencing a prolonged labor. The physician performed an amniotomy 3 hours ago to stimulate the progression of labor. The patient’s most recent vaginal exam was 8/80%/0. Which assessment finding should the nurse should be most concerned about?
- A. Pain score of 7/10
- B. FHR baseline of 165
- C. Mild variable decelerations
- D. Increased bloody mucous discharge
Correct Answer: B
Rationale: The correct answer is B: FHR baseline of 165. A baseline FHR above 160 is considered tachycardia in labor, which could indicate fetal distress. This finding is concerning as it may suggest fetal hypoxia or other complications, requiring immediate attention to prevent adverse outcomes. The other options are less concerning:
A: Pain score of 7/10 is subjective and expected during labor.
C: Mild variable decelerations are common in labor and may not immediately indicate distress.
D: Increased bloody mucous discharge is a normal finding post-amniotomy and not necessarily indicative of fetal distress.
Which mechanism of labor occurs when the largest diameter of the fetal presenting part passes the pelvic inlet?
- A. Extension
- B. Engagement
- C. Internal rotation
- D. External rotation
Correct Answer: B
Rationale: The correct answer is B: Engagement. Engagement occurs when the largest diameter of the fetal presenting part passes through the pelvic inlet, indicating the descent of the fetal head into the pelvis. This is a crucial step in labor progress as it signifies the baby's readiness for birth.
A: Extension occurs during the second stage of labor when the baby's head passes through the birth canal.
C: Internal rotation is the movement of the baby's head within the pelvis to align with the maternal pelvis.
D: External rotation happens after the baby's head is delivered to allow for the shoulders to rotate for birth.
In summary, engagement is the correct answer as it specifically refers to the largest diameter of the fetal presenting part passing the pelvic inlet, setting the stage for the progression of labor.
A 40-year-old G2, P1 woman is admitted to the labor and delivery unit with contractions 6 minutes apart. She is 36 weeks pregnant, has a history of placenta previa, and is currently experiencing moderate vaginal bleeding. What should the nurse be prepared to do?
- A. Perform a vaginal examination to determine cervical dilation
- B. Assist the health care provider to perform artificial rupture of the membranes
- C. Initiate external fetal monitoring
- D. Encourage patient to ambulate to intensify labor
Correct Answer: C
Rationale: The correct answer is C: Initiate external fetal monitoring. In this scenario, the patient is at 36 weeks of gestation with a history of placenta previa and moderate vaginal bleeding, indicating a high-risk situation. External fetal monitoring allows for continuous assessment of the fetal heart rate and uterine contractions, which is crucial for identifying signs of fetal distress or complications related to placenta previa. This monitoring can help guide timely interventions and decision-making to ensure the safety of the mother and baby. Performing a vaginal examination (A) may increase the risk of bleeding in cases of placenta previa. Artificial rupture of membranes (B) can also lead to increased bleeding and should be avoided in this situation. Encouraging ambulation (D) is not recommended due to the risk of exacerbating bleeding and potential complications.
A sterile vaginal examination completed on a patient revealed the presenting part to be the mentum. What is this presentation known as?
- A. Face presentation
- B. Breech presentation
- C. Vertex presentation
- D. Shoulder presentation
Correct Answer: A
Rationale: The correct answer is A: Face presentation. In this presentation, the mentum (chin) of the baby is the presenting part. This is a relatively rare presentation where the baby's head is extended, resulting in the face being the first part to be delivered. In a face presentation, the baby's head is hyperextended rather than flexed as in a vertex presentation. B: Breech presentation is when the baby's buttocks or feet are the presenting part. C: Vertex presentation is when the baby's head is the presenting part with the occiput leading the way. D: Shoulder presentation is when the baby's shoulder is the presenting part, which is a potentially dangerous situation requiring immediate medical intervention.