uk-fficm MCQ (SBA): Severe Hyperkalaemia

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ModerateCardiac Arrest & ResuscitationSevere Hyperkalaemiauk-fficm

A 48-year-old man on ICU develops a serum potassium of 7.5 mmol/L with sine wave pattern on ECG. Standard medical management (calcium gluconate, insulin-dextrose, salbutamol) has been commenced but he remains anuric. What ECG changes indicate the most imminent risk of cardiac arrest in hyperkalaemia?

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uk-fficm MCQ: Severe Hyperkalaemia — Answer & Explanation | iatroX