A nurse is caring for a client with diabetes insipidus (DI). Which data warrants the most immediate intervention by the nurse?Reference Range: Sodium 136 to 145 mEq/L (136 to 145 mmol/L)

Choice A reason: Polyuria and excessive thirst are classic symptoms of diabetes insipidus and indicate the body's inability to retain water due to a lack of antidiuretic hormone (ADH). While these symptoms need to be managed, they are not immediately life-threatening compared to severe hypernatremia.Choice B reason: A serum sodium level of 185 mEq/L (185 mmol/L) indicates severe hypernatremia, which is an immediate medical emergency. Severe hypernatremia can lead to neurological symptoms such as confusion, seizures, and even coma due to the osmotic shift of water out of brain cells. Immediate intervention is required to correct the sodium imbalance and prevent serious complications.Choice C reason: An apical heart rate of 110 beats per minute is indicative of tachycardia, which can be associated with dehydration and the body's response to maintain cardiac output. While it is a concern, it does not take precedence over the need to address severe hypernatremia.Choice D reason: Dry skin with inelastic turgor is a sign of dehydration, which is a common issue in diabetes insipidus due to excessive fluid loss. While this requires attention, it is not as immediately critical as addressing severe hypernatremia, which poses a direct and urgent threat to the client's neurological and overall health.