Certified Dialysis Nurse Practice Test

In dialysis patients, monitoring potassium levels is crucial due to the heightened risk of hyperkalemia. Kidney function is essential for maintaining potassium balance, as healthy kidneys filter excess potassium from the bloodstream. When kidney function declines, as seen in patients with end-stage renal disease, potassium can accumulate to dangerous levels.

High potassium levels can lead to severe complications, including life-threatening cardiac arrhythmias. During dialysis, the procedure is designed to remove excess potassium from the blood, but careful monitoring is still necessary. This is particularly important between dialysis sessions since dietary intake of potassium can contribute to imbalances, and individuals with compromised kidney function may not tolerate typical dietary levels as effectively.

While other electrolytes, such as calcium, sodium, and chloride, are also important to monitor, the immediate risk associated with potassium levels is often considered more critical due to its direct impact on cardiac health and the potential for acute emergencies. Thus, vigilant monitoring and management of potassium are essential components of care for patients undergoing dialysis.