title: Sudden change in R-wave amplitude. Is it a device malfunction?
authors: Cardiology Division, Hospital Universitari Germans Trias i Pujol, Badalona, Spain. 37053oar@gmail.com
authors: Oscar
authors: O
authors: Alcalde
authors: Roger
authors: R
authors: Villuendas
authors: Damià
authors: D
authors: Pereferrer
authors: Antoni
authors: A
authors: Bayes
mesh_terms: D000369:Aged, 80 and over; D002037:Bundle-Branch Block / Q000175:diagnosis*; D017147:Defibrillators, Implantable; D004562:Electrocardiography / Q000295:instrumentation* / Q000379:methods; D004567:Electrodes, Implanted; D004868:Equipment Failure; D019544:Equipment Failure Analysis / Q000379:methods*; D006333:Heart Failure / Q000175:diagnosis* / Q000517:prevention & control*; D006801:Humans; D008297:Male