Katz-Wachtel Phenomenon
Report:
Sinus rhythm 128/min
Right atrial abnormality
Right ventricular hypertrophy
Left ventricular hypertrophy
Comment:
The voltages are the very large (91mm QRS V4, pure R 12mm V1). Katz-Wachtel phenomenon denotes the large, relatively equiphasic, midprecordial ones.
The child had pulmonary atresia and VSD; There were multiple aorto-pulmonary collaterals and severe pulmonary hypertension, with cyanosis. A shunt with 'unifocalisation' of collaterals were performed three years previously.
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