title: Abnormal Q-wave in children. The first report: QS-pattern in lead V1.
abstract: Seventeen healthy children with QS-pattern in lead V1 were studied vectorcardiographycally. Age ranged from 6 to 15 years old. Azimuth at 10 and 20 msec displaced leftward and 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.
mesh_terms: D000293:Adolescent; D002648:Child; D005260:Female; D006321:Heart / Q000502:physiology*; D006801:Humans; D008297:Male; D012016:Reference Values; D014672:Vectorcardiography / Q000379:methods