A nurse is caring for patients with electrolyte imbalances on a medical-surgical unit. Which common causes are correctly paired with the corresponding electrolyte imbalance?

Choice A: Infuse the KCl at a maximum rate of 10 mEq/hr

This is the correct answer. The recommended infusion rate for potassium chloride is generally not to exceed 10 mEq per hour to avoid complications such as hyperkalemia and cardiac arrhythmias. This rate ensures that the potassium is administered safely and effectively, allowing for proper monitoring and adjustment if necessary.

Choice B: Discontinue cardiac monitoring during the infusion

This choice is incorrect. Cardiac monitoring is essential during the infusion of potassium chloride, especially in patients with severe hypokalemia, due to the risk of arrhythmias and other cardiac complications. Continuous monitoring allows for the early detection of any adverse effects and timely intervention.

Choice C: Administer the KCl as a rapid IV bolus

Administering potassium chloride as a rapid IV bolus is dangerous and contraindicated. Rapid infusion can lead to severe hyperkalemia, which can cause fatal cardiac arrhythmias. Potassium chloride should always be administered slowly and diluted in an appropriate volume of fluid.

Choice D: Refuse to give the KCl through a peripheral venous line

While central lines are preferred for higher concentrations of potassium chloride due to the risk of irritation and phlebitis, peripheral lines can be used for lower concentrations and slower infusion rates. Refusing to administer potassium chloride through a peripheral line is not necessary if the infusion is properly managed and monitored.

Choice A reason:

Watery diarrhea for 3 days is a significant finding that correlates with fluid and electrolyte imbalances. Diarrhea leads to the loss of fluids and electrolytes, which can result in dehydration and electrolyte disturbances such as hypokalemia or hyperkalemia. In this case, the patient’s potassium level is elevated (5.6 mEq/L), which could be a result of the body’s attempt to compensate for the loss of other electrolytes. Diarrhea also contributes to the patient’s weakness and lightheadedness due to dehydration.

Choice B reason:

Chronic kidney disease, which has been managed with diuretics and fluid restrictions, is another critical factor. Chronic kidney disease (CKD) affects the body’s ability to regulate fluid and electrolytes. The use of diuretics can exacerbate electrolyte imbalances, particularly potassium levels. In this scenario, the patient’s elevated potassium level (5.6 mEq/L) is concerning, as CKD patients are at higher risk for hyperkalemia due to decreased renal excretion of potassium. The combination of CKD and recent diarrhea increases the complexity of managing the patient’s fluid and electrolyte balance.

Choice C reason:

Lung sounds are clear is an important assessment finding but does not directly correlate with the primary nursing problem of fluid and electrolyte imbalance. While clear lung sounds indicate that the patient is not experiencing respiratory complications such as pulmonary edema or infection, this finding does not address the immediate concerns related to fluid loss and electrolyte disturbances. Therefore, it is not a priority in this context.

Choice D reason:

No nausea and vomiting is a relevant finding but does not directly correlate with the primary nursing problem. The absence of nausea and vomiting is positive, as it indicates that the patient is not losing additional fluids and electrolytes through emesis. However, it does not address the significant fluid loss from diarrhea or the electrolyte imbalances that are the primary concerns in this scenario.

Choice E reason:

History of hypertension is a relevant factor in the patient’s overall health status. Hypertension can complicate the management of fluid and electrolyte imbalances, particularly in patients with CKD. The use of antihypertensive medications and diuretics can affect electrolyte levels and fluid balance. In this case, the patient’s blood pressure is slightly low (109/70), which could be related to dehydration from diarrhea and the effects of antihypertensive medications. This history is important for understanding the patient’s baseline and potential complications.

Choice F reason:

Blood urea nitrogen (BUN) is elevated at 30 mg/dL, which is above the normal range (6-24 mg/dL). An elevated BUN level indicates impaired kidney function and can be a sign of dehydration or renal insufficiency. In the context of CKD and recent diarrhea, an elevated BUN suggests that the kidneys are struggling to manage the body’s waste products and fluid balance. This finding is critical for understanding the extent of the patient’s fluid and electrolyte imbalances and guiding appropriate interventions.