A nurse is caring for a client who is 1 day postpartum and breastfeeding her newborn. The client reports sore nipples. Which of the following actions should the nurse take?

A: Administering an IV bolus of lactated Ringer's is typically used to correct electrolyte imbalances or as a volume expander in the case of blood loss. In peripartum cardiomyopathy, fluid overload should be avoided as it can exacerbate heart failure symptoms.
B: Misoprostol is used to prevent or treat postpartum hemorrhage, but it is not directly related to the management of peripartum cardiomyopathy.

C. Assess blood pressure twice daily:
While monitoring blood pressure is important for overall cardiovascular management, assessing it only twice daily is insufficient for a client with peripartum cardiomyopathy. This condition requires frequent and comprehensive monitoring of vital signs, fluid balance, and cardiac function to prevent complications.

D. Restrict daily oral fluid intake:
Restricting fluid intake is a key intervention in managing peripartum cardiomyopathy because it helps to prevent fluid overload, which could exacerbate heart failure. Clients with this condition often experience reduced cardiac output, and limiting fluids can reduce the strain on the heart and improve overall management of symptoms

Rationale:

A. An apneic episode less than 15 seconds may be considered within normal limits for a newborn and does not necessarily indicate a decline in status.

B. Fine crackles may indicate fluid in the lungs but are not specific to a decline in the newborn's status.

C. An oxygen saturation of 89% indicates hypoxemia, which is a significant concern and suggests respiratory compromise. It indicates a decline in the newborn's status and requires immediate intervention to improve oxygenation.

D. Nasal flaring is a sign of respiratory distress but may not be as concerning as a low oxygen saturation level in this context. It indicates increased work of breathing but does not provide direct information about oxygenation status.