Answer case 100

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Look at the consecutive ECGs in this patient. What electrolyte disturbance do you expect?

Answer

The first ECG shows a rhythm around 60 bpm with severe QRS prolongation and prominent T waves. This might be sinusrhythm with very small P waves or atrial fibrillation with a relatively regular rate. These changes are typical of severe hyperkalemia.

ECG 1

ECG 2

ECG 3