skip to main content

Hyperkalaemia with ECG changes — DipIMC MCQ

Instant feedback + full explanation. One question, done properly.

HardMedical EmergenciesHyperkalaemia with ECG changesDipIMC

A 73-year-old man with chronic kidney disease has weakness and collapses. ECG shows broad QRS complexes with tall tented T waves, pulse 38/min and systolic blood pressure 92 mmHg; he is conscious and IV access is present. What is the most appropriate drug/dose?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: DCalcium gluconate 10% 30 mL IV over 10 minutes

ECG evidence of severe hyperkalaemia with bradycardia requires immediate IV calcium to stabilise the myocardium. Antiarrhythmics do not correct potassium-mediated conduction toxicity and may worsen instability. Definitive potassium shifting/removal follows according to local capability and urgent hospital care.

Reference: JRCALC Guidelines; Resuscitation Council UK Special circumstances 2025