After teaching a pregnant woman about the hormones produced by the placenta, the nurse determines that the teaching was successful when the woman identifies which hormone produced as being the basis for pregnancy tests?

Choice A reason:

Placing a covering on the scale tray when weighing an infant helps to ensure that conductive heat loss from the infant is minimal. Newborns and infants are especially vulnerable to temperature changes, and maintaining their body temperature is crucial for their well-being. By placing a covering, such as a soft cloth or blanket, on the scale tray, the nurse creates a barrier between the infant's skin and the cold surface of the scale. This reduces the risk of heat loss from direct contact with the scale, helping to keep the baby comfortable and preventing any potential adverse effects from exposure to low temperatures during the weighing process.

Choice B reason:

Choice B, compensating for the negative weight balance to ensure the correct weight, is not the primary reason for using a covering on the scale tray. The negative weight balance, if any, would be minimal and not significant enough to affect the accuracy of the infant's weight measurement. The main concern when using a scale for weighing infants is to ensure their comfort and safety during the process.

Choice C reason:

Choice C, avoiding causing multiple startle (Moro) reflexes when weighing, is not the main reason for using a covering on the scale tray. The Moro reflex is a normal startle response in infants and is not typically affected by whether or not a covering is placed on the scale tray.

The nurse can support the infant appropriately during weighing to minimize any startle reflexes, regardless of whether a covering is used.

Choice D reason:

Choice D, avoiding contaminating the nurse's hands with blood or other body substances, is not directly related to using a covering on the scale tray. The primary purpose of using a covering is to minimize heat loss, as explained in Choice A. However, it is standard practice for healthcare professionals to wear gloves when handling blood or body substances to prevent any potential transmission of infections, ensuring both the nurse's and the infant's safety.

Choice A reason:

Occasional uterine cramping when the infant nurses is a normal phenomenon that occurs as the uterus contracts and returns to its pre-pregnancy size. This is not a sign of infection or complication and does not need to be reported.

Choice B reason:

Descent of the fundus one fingerbreadth each day is also a normal finding that indicates the uterus is involuting properly. The fundus is the top of the uterus that can be felt through the abdomen. It should be at the level of the umbilicus immediately after delivery and then descend about one fingerbreadth (or 1 cm) each day until it reaches the pelvic brim by 10 days postpartum.

Choice C reason:

Reappearance of red lochia after it changes to serous is an abnormal sign that may indicate uterine atony, subinvolution, or retained placental fragments. Lochia is the vaginal discharge that occurs after childbirth, consisting of blood, mucus, and tissue. It usually changes from red to pink to brown to yellow-white over a period of several weeks. If it becomes red again, it may mean that there is bleeding from the uterus or infection in the endometrium. This should be reported to a health care provider as soon as possible.

Choice D reason:

Oral temperature that is 37.2 C (99 F) in the morning is within the normal range and does not indicate fever or infection. A slight elevation in temperature may occur due to dehydration, breast engorgement, or hormonal changes. This does not need to be reported unless it exceeds 38 C (100.4 F) or persists for more than 24 hours.