A nurse is caring for a postoperative client on the surgical unit. The client’s blood pressure was 142/76 mm Hg, 30 minutes ago, and now is 88/50 mm Hg. What action would the nurse take first?

Choice A rationale:
While it's true that dehydration can lead to incontinence, simply stating this fact to the patient doesn't directly address the issue of dehydration. It doesn't provide actionable steps to correct the dehydration.
Incontinence can be a result of dehydration, but addressing the dehydration is the primary concern to prevent further complications.
Providing information about incontinence might be helpful in other contexts, but it's not the most effective advice to address mild dehydration in this specific scenario.
Choice B rationale:
Diuretics promote fluid loss through urination, which can worsen dehydration.
Advising the patient to take a diuretic in the morning would be counterproductive in this case. The goal is to increase fluid intake, not further deplete fluid levels.
It's important to consider the patient's medications and potential interactions before suggesting any changes to their medication regimen.

Choice C rationale:
Regular fluid intake is essential for maintaining hydration and replenishing lost fluids.
This advice directly addresses the issue of dehydration by encouraging the patient to consume fluids consistently. Drinking fluids every 1 to 2 hours can help restore fluid balance and prevent further complications.
It's a simple, actionable, and effective measure to address mild dehydration.
Choice D rationale:
While reducing sodium intake can be beneficial for some individuals with hypertension or other conditions, it's not the most relevant advice for addressing mild dehydration.
Sodium restriction might be appropriate in certain cases, but it doesn't directly address the immediate need to increase fluid intake.
The primary focus in this situation should be on replenishing fluids, not restricting sodium.

Choice A rationale:
Hourly neurologic checks are not the priority intervention for a client with hypokalemia. While hypokalemia can cause neuromuscular changes, such as muscle weakness and cramps, these are not typically the most immediate or life-threatening concerns.
Cardiac monitoring is crucial to detect and manage potentially fatal arrhythmias promptly.

Neurologic checks can be implemented as part of the overall assessment and monitoring plan, but they should not supersede cardiac monitoring in this situation.
Choice C rationale:
Seizure precautions are not routinely initiated for clients with hypokalemia unless there is a specific seizure history or other neurological concerns.
Hypokalemia can cause neuromuscular irritability, but it does not directly trigger seizures in most cases. The priority remains cardiac monitoring due to the significant risk of arrhythmias.
Choice D rationale:
Administering oxygen via face mask might be considered if the client exhibits respiratory distress or hypoxemia. However, it's not the immediate priority intervention for hypokalemia without accompanying respiratory compromise.
Hypokalemia primarily affects cardiac conduction, necessitating prompt cardiac monitoring.
Oxygen therapy can be administered if clinically indicated, but it does not address the underlying electrolyte imbalance.
Rationale for the correct answer, B:
Initiating cardiac monitoring is the most crucial nursing action for a client with a serum potassium level of 2.8 mEq/L. Here's a detailed explanation:
Hypokalemia's significant cardiac effects:
Potassium is essential for normal cardiac conduction and muscle contraction. Hypokalemia disrupts the electrical activity of the heart, potentially leading to:
Arrhythmias (irregular heartbeats), including potentially fatal ones like ventricular tachycardia or fibrillation. Electrocardiogram (ECG) changes, such as ST segment depression, T wave flattening or inversion, and prominent U waves. Cardiac monitoring's role:
Continuously tracks the heart's electrical activity. Enables early detection of arrhythmias.
Facilitates prompt intervention to prevent life-threatening complications. Specific benefits of cardiac monitoring in hypokalemia:

Allows for early identification and treatment of arrhythmias, potentially preventing cardiac arrest. Guides electrolyte replacement therapy, ensuring appropriate potassium administration.
Assesses the effectiveness of interventions, ensuring the patient's stability.