title: Summaries for patients. Using electrocardiography to detect problems with cardiac resynchronization devices.
mesh_terms: D000465:Algorithms; D002037:Bundle-Branch Block / Q000503:physiopathology; D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography / Q000379:methods*; D006333:Heart Failure / Q000503:physiopathology* / Q000628:therapy*; D006801:Humans; D012680:Sensitivity and Specificity; D018487:Ventricular Dysfunction, Left / Q000175:diagnosis* / Q000503:physiopathology