A nurse is teaching a new mother about breastfeeding. The nurse determines that the teaching was successful when the woman identifies which hormone as responsible for milk let-down?

progesterone

estrogen

prolactin

oxytocin

Answer and Explanation

The Correct Answer is D

A. Progesterone plays a significant role in maintaining pregnancy and preparing the breasts for lactation, but it is not responsible for the milk let-down reflex.
B. Estrogen helps with breast development and ductal growth during pregnancy, but it does not trigger the milk let-down reflex.
C. Prolactin is responsible for milk production (lactogenesis) but not for the actual release of milk from the breast.
D. Oxytocin is the hormone responsible for the milk let-down reflex, which causes milk to be released from the milk glands into the nipple when the baby suckles. It also promotes uterine contractions after childbirth.

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Correct Answer is D

Explanation

A. Cephalhematoma refers to a collection of blood between the baby's skull and the periosteum (the membrane covering the bone), which does not cross the suture lines. It typically occurs after a traumatic delivery, but it is not diffuse edema like caput succedaneum.

B. Molding refers to the shaping of the baby’s head to fit through the birth canal during delivery. It involves temporary changes to the skull bones (such as overlapping sutures) but does not involve edema or soft tissue swelling.

C. Microcephaly is a condition where a newborn's head is abnormally small, usually due to developmental issues, and it has nothing to do with edema or swelling of the soft tissues.

D. Caput succedaneum is the correct term for diffuse edema of the newborn’s scalp that crosses the suture lines. It is caused by the pressure during delivery as the baby's head moves through the birth canal, and it typically resolves within a few days after birth.

A. Wrap the newborn in a blanket. B. Put a hat on the newborn's head. C. Check the newborn's temperature. D. Dry the newborn thoroughly.

Correct Answer is D

Explanation

A. Wrap the newborn in a blanket helps maintain body heat after the initial drying and stimulation but is not the first priority in thermoregulation.
B. Put a hat on the newborn's head also helps prevent heat loss, particularly from the head, which is a major site of heat loss in newborns. However, this should be done after drying to avoid trapping moisture.
C. Check the newborn's temperature is important but should be done after immediate measures to prevent heat loss have been taken.
D. Dry the newborn thoroughly is the first and most critical step in preventing evaporative heat loss, which is the primary cause of newborn heat loss immediately after birth. Removing wet amniotic fluid from the skin helps stabilize temperature effectively.

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A nurse is teaching a new mother about breastfeeding. The nurse determines that the teaching was successful when the woman identifies which hormone as responsible for milk let-down?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

While performing a physical assessment of a newborn boy, the nurse notes diffuse edema of the soft tissues of his scalp that crosses suture lines. The nurse documents this finding as:

Correct Answer is D

Explanation

After the birth of a newborn, which action would the nurse do first to assist in thermoregulation?

Correct Answer is D

Explanation

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