A nurse is caring for a newborn. How many blood vessels should the nurse expect to observe in the newborn's umbilical cord?

Choice A rationale:

Supporting the infant during birth. The priority for the nurse in this situation is to ensure the safe delivery of the baby. By supporting the infant during birth, the nurse can help ensure that the baby is delivered safely and efficiently. This involves assisting the mother in pushing and guiding the baby's head and body as it emerges from the birth canal. The nurse should also be ready to catch the baby and provide immediate care, such as drying and stimulating the baby to breathe if necessary.

Choice B rationale

Preventing the perineum from tearing. While preventing perineal tearing is important, it is not the top priority in this rapidly progressing labor scenario. The immediate concern is the safe delivery of the baby, and if perineal tearing does occur, it can be addressed after the birth.

Choice C rationale

Cutting the umbilical cord. This action is necessary but not the top priority. After the baby is delivered, the nurse should clamp and cut the umbilical cord to separate the baby from the placenta. However, this can wait until the baby is fully delivered and breathing on their own.

Choice D rationale

Promoting delivery of the placenta. Again, while delivering the placenta is important to prevent postpartum haemorrhage, it is not the priority in this scenario. The nurse's immediate focus should be on supporting the infant's delivery and ensuring the baby's well-being.

Choice A rationale:
Fetal head compression is unlikely to cause variable decelerations in the fetal heart rate. During contractions and labor, the fetal head may experience pressure, but this usually leads to early decelerations, not variable decelerations. Early decelerations are considered benign and are caused by the head's pressure stimulating the vagus nerve, resulting in a temporary decrease in heart rate.
Choice B rationale:
Umbilical cord compression is a known cause of variable decelerations in the fetal heart rate. When the umbilical cord is compressed, it can temporarily disrupt blood flow and oxygen supply to the fetus, leading to decelerations. Variable decelerations often appear as abrupt, sharp drops in the fetal heart rate and are typically characterized by their unpredictable
nature.
Choice C rationale:
Maternal opioid administration is not a direct cause of variable decelerations in the fetal heart rate. While opioids can cross the placenta and may affect the fetus, they are more likely to cause other issues, such as respiratory depression in the newborn, rather than variable decelerations.
Choice D rationale:
Uteroplacental insufficiency is not the primary factor causing variable decelerations. Uteroplacental insufficiency refers to an inadequate blood flow and oxygen delivery to the placenta, which can lead to late decelerations in the fetal heart rate, not variable decelerations.