A 72-year-old client is admitted with hyponatremia and is started on an infusion of 3 After four hours, the nurse notes that the client's blood pressure has increased to 156/92 mm Hg, respiratory rate is 24/min, and oxygen saturation is 91 On physical assessment, the nurse hears new-onset crackles in the lower lung fields and observes +2 pitting edema in both ankles. The client appears restless and mildly confused, has a urine output of only 200 mL over the last four hours, and has gained 1.2 kg (2.6 pounds) since admission. Which of the following actions should the nurse take?

Choice A rationale The clinical presentation of elevated blood pressure, tachypnea, and decreased oxygen saturation strongly suggests fluid volume overload. New onset crackles in the lungs and pitting edema are classic indicators of pulmonary congestion and systemic fluid retention. In a 72-year-old patient receiving hypertonic saline for hyponatremia, the risk of rapid fluid shifts into the intravascular space is high. Prompt notification of the provider is essential to adjust the infusion and prevent further respiratory or cardiac compromise. Choice B rationale Continuing to monitor without intervention is inappropriate and dangerous when a client shows active signs of respiratory distress and cardiovascular strain. Monitoring is a secondary action that must follow immediate clinical intervention or notification of the medical team. The presence of crackles and a drop in oxygen saturation to 91 percent indicates that the current treatment plan is causing harm. Waiting longer could lead to acute pulmonary edema or heart failure in an elderly patient with limited cardiac reserve. Choice C rationale Increasing the fluid rate would exacerbate the existing fluid volume excess and worsen the client's condition. Hypertonic solutions draw intracellular fluid into the extracellular space, rapidly increasing circulating volume. The patient is already showing signs that the heart cannot handle the current volume, as evidenced by the 1.2 kg weight gain and edema. Further increasing the rate would likely lead to severe hypertension and life-threatening respiratory failure due to worsening pulmonary congestion and alveolar flooding. Choice D rationale Requesting anti-anxiety medication addresses a symptom rather than the underlying physiological cause of the restlessness. The client's confusion and restlessness are most likely secondary to hypoxia and cerebral changes from fluid shifts or hyponatremia. Administering a sedative could mask worsening neurological status and potentially depress the respiratory drive in a patient already struggling with oxygenation. The priority must be correcting the fluid imbalance and improving oxygenation through appropriate medical management of the overload.