Question

A 68-year-old man with chronic kidney disease presents with serum potassium 6.7 mmol/L, peaked T waves on ECG and mild weakness. Which immediate therapy is most important to reduce the risk of malignant arrhythmia?

Accepted Answer

Intravenous calcium gluconate

Answer

Oral sodium polystyrene sulfonate

Answer

Intravenous insulin with dextrose only

Answer

Loop diuretic therapy alone

Answer

Low-potassium diet only

Practice question

A 68-year-old man with chronic kidney disease presents with serum potassium 6.7 mmol/L, peaked T waves on ECG and mild weakness. Which immediate therapy is most important to reduce the risk of malignant arrhythmia?