A nurse on a postpartum unit is caring for a client. Exhibits Complete the following sentence by using the lists of options. The client is most likely experiencing dropdown as evidenced by the client's dropdown.

Rationale for Correct Choices Endometritis: This uterine infection is common after cesarean delivery, especially with prolonged rupture of membranes. The client’s uterine tenderness, elevated fundus, boggy consistency, and foul-smelling lochia are hallmark signs of endometritis, making it the most likely diagnosis. Uterus and lochia: The presence of a tender uterus that is elevated above the umbilicus and only firms with massage, combined with dark, malodorous lochia, strongly suggests infection of the uterine lining. These findings point specifically to endometritis rather than general postpartum changes. Rationale for Incorrect Choices Mastitis: Although the client reports heavy, warm breasts with nipple discomfort, there is no breast erythema, localized swelling, or high-grade fever typical of mastitis. These symptoms are likely due to engorgement related to lactation rather than infection. Pneumonia: The client’s respiratory assessment shows clear lungs with only slight basal changes common postoperatively. There are no signs of cough, sputum production, hypoxia, or respiratory distress, which makes pneumonia an unlikely cause of her symptoms. Fever: A temperature of 38.2°C is above normal, but mild postpartum fever can have various causes, including engorgement, dehydration, or early infection. Fever alone is not specific enough to confirm a diagnosis without targeted findings. WBC count: Although an elevated WBC of 33,000/mm³ raises concern, postpartum leukocytosis can be physiologic or related to many infections. It is not diagnostic of endometritis without more specific correlating signs like uterine tenderness and abnormal lochia.