A nurse is caring for a newborn under a radiant warmer.

The temperature probe becomes detached, causing the warmer to overheat.

Which finding requires immediate action?

Choice A rationale

Convection involves the loss of heat due to air currents moving across the infant's skin. While some air movement is always present, the primary risk for heat loss associated with proximity to a large cold exterior wall and window in a winter environment is the transfer of heat to those large, unheated, non-contact surfaces through radiation, not typically a draft.

Choice B rationale

Radiation is the transfer of heat from a warm object (the infant) to a cooler solid object (the exterior wall and large window) that is not in direct contact with the body. These large, cold surfaces act as heat sinks, causing the infant to lose body heat significantly via electromagnetic waves, a major mechanism of heat loss in a crib placement next to an outside wall.

Choice C rationale

Evaporation is the heat loss caused by the vaporization of moisture (like sweat or bath water) from the skin surface. While this mechanism is always a factor, it is not primarily responsible for the temperature drop in this specific scenario, which emphasizes the environmental factors of the cold wall and window near the crib.

Choice D rationale

Conduction involves the loss of heat through direct contact with a cooler surface, such as the crib mattress or cold linens. Since the scenario describes the infant being near an exterior wall and window, which are not touching the infant, conduction is not the mechanism responsible for this particular drop in temperature.

Choice A rationale

While notifying the provider is an important step in managing postpartum hemorrhage, the nurse's first, most immediate action is to attempt to stop or slow the blood loss. Manual massage of the fundus stimulates uterine muscle contraction, which compresses the open blood vessels at the placental site and reduces bleeding.

Choice B rationale

The first action when postpartum hemorrhage is suspected, indicated by a soft, boggy (atonic) uterus, is to initiate fundal massage. Massage stimulates the uterine muscles to contract, which mechanically occludes the bleeding vessels at the site where the placenta separated, thereby reducing blood loss and preventing life-threatening hemorrhage.

Choice C rationale

Preparing for surgery is a management option for intractable hemorrhage that does not respond to initial, less invasive measures like massage and uterotonic drugs. It is not the immediate, first-line action; immediate intervention focuses on stimulating uterine contraction through manual fundal massage.

Choice D rationale

Administering intravenous Pitocin (oxytocin) is the first-line pharmacologic intervention for uterine atony, but it is typically ordered concurrent with or immediately following fundal massage. The physical act of fundal massage is the most immediate, non-invasive first step to address the lack of uterine tone and reduce acute blood loss.