Which intervention should the nurse implement to manage a client’s fluid and electrolyte balance?

Choice A reason: Hydromorphone, an opioid, poses a significant risk of respiratory depression by suppressing the brainstem’s respiratory centers. After four days, cumulative effects increase this risk, especially in opioid-naïve patients. Monitoring respiratory rate and depth is critical to prevent life-threatening hypoxia, making it the priority assessment.

Choice B reason: Constipation is a common hydromorphone side effect due to opioid-induced reduced gastrointestinal motility. While important, it is not life-threatening like respiratory depression. Monitoring bowel function is secondary, as respiratory compromise poses an immediate risk requiring urgent intervention in opioid therapy.

Choice C reason: Skin rash is a rare allergic reaction to hydromorphone, not a primary concern after four days of use. Respiratory depression is far more critical, as opioids directly depress respiratory drive, risking hypoxia, making rash assessment secondary to monitoring respiratory function.

Choice D reason: Nausea is a frequent hydromorphone side effect, often diminishing with continued use. While bothersome, it is not life-threatening compared to respiratory depression, which can cause rapid hypoxia. Monitoring respiratory status is the priority to ensure patient safety during opioid administration.

Choice A reason: Monitoring daily urine output assesses kidney function and fluid balance, as urine volume reflects hydration and electrolyte homeostasis. Inadequate output signals dehydration or renal issues, allowing timely intervention to maintain fluid and electrolyte balance, making it the most effective nursing action.

Choice B reason: Salt tablets after exercise replace sodium lost in sweat but are not a universal intervention for fluid and electrolyte balance. They risk hypernatremia if overused. Monitoring urine output is more comprehensive, as it directly evaluates fluid status across various clinical scenarios.

Choice C reason: Reviewing food labels for sodium content helps manage dietary intake but is indirect and patient-dependent. Urine output monitoring provides objective data on fluid and electrolyte status, enabling timely adjustments in therapy, making it a more immediate and reliable intervention.

Choice D reason: Drinking water when thirsty supports hydration but relies on subjective thirst, which may be impaired in certain conditions. Monitoring urine output objectively assesses fluid balance, detecting imbalances early, making it a more proactive and precise intervention than thirst-driven hydration.