Abnormal Q-wave in Children The first report: QS-pattern in Lead V1 : THE 9th CONFERENCE ON PREVENTION FOR RHEUMATIC FEVER AND RHEUMATIC HEART DISEASE

Abstract

Seventeen healthy children with QS-pattern in lead V1 were studied vector-cardiographycally. Age ranged from 6 to 15 years old. Azimuth at 10 and 20 msec displaced leftward an azimuth of maximum spatial voltage slightly displaced posteriorly. Anterior component was minimal. QS-pattern in lead V1 in children is not necessarily abnormal finding. The main cause of QS-pattern in lead V1 is electrical rotation of the heart.