Which electrolyte abnormality is a major risk to monitor in CKD?

Which electrolyte abnormality is a major risk to monitor in CKD?

• A. Hyperkalemia
• B. Hypokalemia
• C. Hyponatremia
• D. Hypercalcemia

Answer: (A)

In CKD, the kidneys lose the ability to excrete potassium effectively, so serum potassium tends to rise as kidney function declines. This makes hyperkalemia a major risk to monitor because even small increases can quickly affect cardiac conduction and lead to dangerous arrhythmias. Potassium is normally kept in check by renal excretion and cellular shifts; when those mechanisms are impaired, the heart becomes vulnerable to life-threatening rhythm disturbances, which is why regular potassium checks are a central part of CKD management. While other electrolyte abnormalities like hyponatremia or hypercalcemia can occur due to fluid status and disordered mineral metabolism, hyperkalemia is the most directly hazardous and time-sensitive concern in CKD. Monitoring involves watching trends in potassium levels, reviewing medications (such as ACE inhibitors, ARBs, and potassium-sparing drugs), and implementing dietary limits or treatments to lower potassium if needed, with more urgent interventions if levels rise rapidly or with clinical signs of cardiac involvement.

In CKD, the kidneys lose the ability to excrete potassium effectively, so serum potassium tends to rise as kidney function declines. This makes hyperkalemia a major risk to monitor because even small increases can quickly affect cardiac conduction and lead to dangerous arrhythmias. Potassium is normally kept in check by renal excretion and cellular shifts; when those mechanisms are impaired, the heart becomes vulnerable to life-threatening rhythm disturbances, which is why regular potassium checks are a central part of CKD management. While other electrolyte abnormalities like hyponatremia or hypercalcemia can occur due to fluid status and disordered mineral metabolism, hyperkalemia is the most directly hazardous and time-sensitive concern in CKD. Monitoring involves watching trends in potassium levels, reviewing medications (such as ACE inhibitors, ARBs, and potassium-sparing drugs), and implementing dietary limits or treatments to lower potassium if needed, with more urgent interventions if levels rise rapidly or with clinical signs of cardiac involvement.