Electrical alternans in a case of electrical shock

Electrical alternans is a broad term that describes alternate-beat variation in the direction, amplitude and duration of any component of the ECG waveform. The presence of electrical alternans has no clinical manifestation outside those present from underlying cause of association. Thus searching for underlying cause is necessary. Here we have reported a case of 8 years old male child who presented with cough and increase respiratory rate following electrical shock and ECG showed electrical alternans in QRS complex.