The ECG finding of hypokalemia is a "U wave". This is an extra positive deflection after the T wave and before the next P wave as seen in lead II on this ECG. This patient had a potassium level of ...
Hypokalemia causes U waves in the ECG seen as a positive wave just after the T wave. Hyperkalemia causes peaked T waves initially, then an intraventricular conduction delay with a widened QRS ...
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