Profound independent effects of left bundle branch block and heart rate during supraventricular tachycardia.
Left bundle branch block (LBBB) has negative hemodynamic effects. In the same patient, profound hypotension occurs during supraventricular tachycardia with LBBB but not at the same rate in the absence of LBBB. At slower rates, blood pressure is similar with and without LBBB.
Fisher
John D
JD
Department of Medicine, Cardiology Division, Arrhythmia Service, Montefiore Medical Center and the Albert Einstein College of Medicine, Cardiology-N2-Silver Zone, NY 10467, USA. jfisher@montefiore.org
D002037:Bundle-Branch Block / Q000150:complications / Q000503:physiopathology* / Q000628:therapy; D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography; D006339:Heart Rate / Q000502:physiology; D006439:Hemodynamics; D006801:Humans; D007022:Hypotension / Q000209:etiology / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D013617:Tachycardia, Supraventricular / Q000150:complications / Q000503:physiopathology* / Q000628:therapy