A nurse is caring for a client who has just delivered her first newborn. The nurse anticipates hyperbilirubinemia due to Rh incompatibility. The nurse should understand that hyperbilirubinemia occurs with Rh incompatibility for which of the following reasons?

Choice A rationale:

The nurse should discontinue the oxytocin infusion if the client's contraction frequency is every 3 minutes. Frequent contractions may lead to uterine hyperstimulation, which can reduce fetal blood flow and oxygenation, potentially causing fetal distress. Normal contraction frequency during labor is typically every 2 to 5 minutes.

Choice B rationale:

Contraction duration of 100 seconds is not an indication to discontinue the oxytocin infusion. The duration of contractions can vary during labor, and 100 seconds is within the normal range of contraction duration, which is usually 45 to 90 seconds.

Choice C rationale:

Fetal heart rate with moderate variability is not an indication to discontinue the oxytocin infusion. Moderate variability in fetal heart rate is a reassuring sign, indicating a healthy fetal response to labor. It shows that the fetus is tolerating the contractions well and is not experiencing fetal distress.

Choice D rationale:

A fetal heart rate of 118/min is not an indication to discontinue the oxytocin infusion. The normal fetal heart rate range is typically between 110 to 160 beats per minute, and a heart rate of 118/min falls within this normal range. However, if the fetal heart rate deviates significantly from the normal range or shows signs of distress, further assessment and intervention are required.

Choice A rationale:

While there is a risk of infection with any internal examination, it is not the primary reason for avoiding internal examinations in a client with placenta previa. The main concern is avoiding trauma to the placenta, which could result in significant bleeding.

Choice B rationale:

Although internal examinations may potentially stimulate uterine contractions, leading to preterm labor in some cases, this is not the primary reason for avoiding such examinations in clients with placenta previa. The primary concern remains the risk of bleeding due to placental disruption.

Choice C rationale:

The correct explanation for the nurse to provide is that an internal examination could result in profound bleeding. Placenta previa occurs when the placenta partially or completely covers the cervix, and any manipulation of the cervix or uterus through an internal examination could disrupt the placenta and cause severe bleeding, endangering both the mother and the baby.

Choice D rationale:

While there is a risk of rupturing the membranes during an internal examination, this is not the primary reason for avoiding such examinations in clients with placenta previa. The primary concern remains the risk of bleeding due to placental disruption.