Question

A 72-year-old woman with long-standing CKD stage 4 (eGFR 22 mL/min/1.73 m²) presents with serum potassium 6.5 mmol/L, peaked T waves on ECG, and mild weakness. What is the most appropriate immediate treatment?

Accepted Answer

Intravenous calcium gluconate

Answer

Oral sodium polystyrene sulfonate alone

Answer

Increase dietary potassium to avoid arrhythmias

Answer

No treatment; repeat potassium in 6 hours

Answer

Start an ACE inhibitor to stabilise potassium levels

Practice question

A 72-year-old woman with long-standing CKD stage 4 (eGFR 22 mL/min/1.73 m²) presents with serum potassium 6.5 mmol/L, peaked T waves on ECG, and mild weakness. What is the most appropriate immediate treatment?