title: [Diagnostic value of R amplitude behavior at a recording site below the conventional thoracic wall recording in the diagnosis of chronic ischemic heart disease].
abstract: Sensitivity and specificity of the behaviour of the R-amplitudes under exercise are investigated at an additional lead position on the anterior chest wall, which in previous multi-electrode-examinations showed a higher sensitivity than the conventional Wilson-leads V 4 and V 5. For the criterion "increase of R-amplitudes" could certainly be confirmed a higher sensitivity at the additional lead position, the bad specificity both at the conventional and at the additional lead position allows, however, only the inclusion of the decrease of the physiological R-amplitude into the exclusion diagnostics of the chronic ischaemic heart disease.
mesh_terms: D000328:Adult; D000368:Aged; D000787:Angina Pectoris / Q000175:diagnosis; D003327:Coronary Disease / Q000175:diagnosis*; D004562:Electrocardiography / Q000379:methods*; D005080:Exercise Test; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Die diagnostische Wertigkeit des R-Amplituden-Verhaltens an einem Ableitpunkt unterhalb der konventionellen Brustwandableitungen in der Diagnostik der chronisch ischämischen Herzkrankheit.