title: Paroxysmal atrioventricular block related to phase 4 bilateral bundle branch block.
mesh_terms: D000200:Action Potentials; D000219:Adams-Stokes Syndrome / Q000503:physiopathology; D000368:Aged; D002037:Bundle-Branch Block / Q000503:physiopathology*; D005117:Cardiac Complexes, Premature / Q000503:physiopathology; D002306:Cardiac Volume; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans