Which laboratory test is critical to monitor for patients undergoing hemodialysis?

Monitoring serum potassium levels is essential for patients undergoing hemodialysis due to the risk of hyperkalemia, which can lead to serious cardiac complications. Hemodialysis helps to remove excess potassium from the blood, particularly in patients with compromised kidney function who cannot excrete potassium effectively. Elevated potassium levels can result from dietary intake or tissue breakdown, potentially causing arrhythmias or even cardiac arrest.

While serum calcium, magnesium, and creatinine levels are also relevant for managing patients on hemodialysis, potassium levels require urgent attention. If potassium levels are not adequately monitored and controlled, patients may experience life-threatening conditions. Thus, the focus on maintaining safe potassium levels actively contributes to patient safety and overall health during hemodialysis treatment.