Which of the following are contraindications for VBAC? (Select All that Apply.).
A prior vaginal delivery.
Gestation of 42 weeks.
Maternal obesity.
One prior cesarean delivery.
Macrosomic fetus.
Correct Answer : C,E
Choice A reason:
A prior vaginal delivery is not a contraindication for VBAC. In fact, it is a positive predictor of success for VBAC, as it indicates that the woman has a proven pelvis and can tolerate labor.
Choice B reason:
The gestation of 42 weeks is not a contraindication for VBAC. However, it is associated with an increased risk of stillbirth while awaiting spontaneous labor, which should be balanced against the risks of induction of labor or elective repeat cesarean.
Choice C reason:
Maternal obesity is a relative contraindication for VBAC. It is associated with a lower success rate of VBAC, a higher risk of uterine rupture, and a higher risk of maternal and neonatal complications. The decision to attempt VBAC in obese women should be made on a case-by-case basis by a senior obstetrician.
Choice D reason:
One prior cesarean delivery is not a contraindication for VBAC. Most women who have had one prior lower segment cesarean delivery are eligible for VBAC, as the risk of uterine rupture is low (0.5%) and the success rate is high (72-75%).
Choice E reason:
A macrosomic fetus is a relative contraindication for VBAC. It is associated with a lower success rate of VBAC, a higher risk of uterine rupture, and a higher risk of shoulder dystocia and birth trauma. The decision to attempt VBAC in women with suspected macrosomia should be made on a case-by-case basis by a senior obstetrician.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason:
Monitoring the newborn's blood glucose level hourly is not necessary for a newborn undergoing phototherapy. Phototherapy does not affect blood glucose levels, and hourly monitoring would be too invasive and stressful for the newborn. •
Choice B reason:
Applying lotion to the newborn's skin twice per day is not recommended for a newborn undergoing phototherapy. Lotion can interfere with the effectiveness of the phototherapy and increase the risk of skin irritation or infection. •
Choice C reason:
Maintaining the newborn in a prone position is not advisable for a newborn undergoing phototherapy. The newborn should be positioned on alternate sides to expose as much skin surface as possible to the light source. •
Choice D reason:
Encouraging the newborn to breastfeed every 2 hr is an appropriate action for a newborn undergoing phototherapy. Frequent feeding helps to promote hydration and the elimination of bilirubin from the body.
Correct Answer is A
Explanation
Choice A reason:
Maternal/newborn blood group incompatibility is the most common cause of pathologic jaundice, which appears within the first 24 hours of life. This occurs when the mother's antibodies attack the newborn's red blood cells, causing hemolysis and increased bilirubin production. The excess bilirubin causes the yellowish discoloration of the skin and mucous membranes.
Choice B reason:
The absence of vitamin K is not related to jaundice but to hemorrhagic disease of the newborn. Vitamin K is essential for blood clotting and is given to newborns as an injection shortly after birth. Newborns are at risk of vitamin K deficiency because they have low levels of vitamin K in their bodies and breast milk, and their intestinal bacteria are not yet able to synthesize vitamin K.
Choice C reason:
Maternal cocaine abuse can cause many complications for the newborn, such as prematurity, low birth weight, neonatal abstinence syndrome, neurobehavioral problems, and congenital anomalies. However, it is not a direct cause of jaundice in the newborn.
Choice D reason:
Physiologic jaundice is a normal and benign condition that affects about 60% of term newborns. It occurs due to the immature liver's inability to metabolize bilirubin effectively. It usually appears after the first 24 hours of life and peaks around the third or fourth day. It does not require treatment unless the bilirubin level is very high or rising rapidly.
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