title: Elimination of diaphragmatic contractions from chronic pacing catheter perforation of the heart by conversion to a unipolar system.
mesh_terms: D000368:Aged; D006328:Cardiac Catheterization; D003964:Diaphragm / Q000503:physiopathology*; D004562:Electrocardiography; D004567:Electrodes, Implanted / Q000009:adverse effects*; D005260:Female; D006335:Heart Injuries / Q000503:physiopathology*; D006801:Humans; D007366:Intercostal Muscles / Q000503:physiopathology; D010138:Pacemaker, Artificial / Q000009:adverse effects*; D010701:Phonocardiography; D012119:Respiration