High-degree atrioventricular block in patients with preexisting bundle branch block or bundle branch block occurring during transcatheter aortic valve implantation

Interventional Cardiology Left Bundle-Branch Block Induced by Transcatheter Aortic Valve Implantation Increases Risk of Death

Patrick Houthuizen, MD*; Leen A.F.M. Van Garsse, MD*; Thomas T. Poels; Peter de Jaegere, MD, PhD; Robert M.A. van der Boon; Ben M. Swinkels, MD; Jurriën M. ten Berg, MD, PhD; Frank van der Kley, MD; Martin J. Schalij, MD, PhD; Jan Baan, Jr, MD, PhD; Ricardo Cocchieri, MD; Guus R.G. Brueren, MD, PhD; Albert H.M. van Straten, MD, PhD; Peter den Heijer, MD, PhD; Mohamed Bentala, MD; Vincent van Om...

Left bundle-branch block induced by transcatheter aortic valve implantation increases risk of death.

BACKGROUND Transcatheter aortic valve implantation (TAVI) is a novel therapy for treatment of severe aortic stenosis. Although 30% to 50% of patients develop new left bundle-branch block (LBBB), its effect on clinical outcome is unclear. METHODS AND RESULTS Data were collected in a multicenter registry encompassing TAVI patients from 2005 until 2010. The all-cause mortality rate at follow-up ...

Incomplete Bundle Branch Block.

Lewis (1925) stated that delay in the passage of the impulse down a bundle branch could alter materially the form of the electrocardiogram. Wilson (1940) defined incomplete bundle branch block as due to a conduction defect that merely retards the passage of the impulse through one of the main bundle branches, and stated that it gives rise to electrocardiograms which are " transitional, both as ...

Bilateral bundle branch block.

Left Bundle Branch Block

Coronary angiography, cine left ventriculography, and the cardiovascular hemodynamics of 24 patients with left bundle branch block were studied. Seven patients were found to have significant coronary artery disease, always severe. Five had cardiomyopathy and seven had valvular disease. Only those with coronary artery disease or cardiomyopathy had abnormal left ventricular contraction patterns. ...