title: [Differential diagnosis of the deviation of the QRS left axis in ECG].
abstract: 100 ECGs with left axis deviation have been analyzed with respect to left anterior fascicular block (LAFB). On the basis of conventional criteria LAFB was diagnosed in 59 cases, but could be rules out in 26. Of the remaining 15 ECGs which at first seemed doubtful, 4 were identified as LAFB on the basis of a new criterion: duration of qR in a VL at least 40 msec longer than in V6.
mesh_terms: D002037:Bundle-Branch Block / Q000175:diagnosis*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Zur Differentialdiagnose der überdrehten QRS-Linkslage im Ekg