Unusual qrs complexes produced by pacemaker stimuli with special reference to myocardial tunneling and coronary sinus stimulation.
D002037:Bundle-Branch Block; D006328:Cardiac Catheterization / Q000009:adverse effects; D003331:Coronary Vessels / Q000293:injuries / Q000503:physiopathology; D004558:Electric Stimulation; D004562:Electrocardiography; D004566:Electrodes; D006321:Heart / Q000503:physiopathology*; D006335:Heart Injuries / Q000209:etiology; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008722:Methods; D009206:Myocardium / Q000473:pathology; D010138:Pacemaker, Artificial / Q000009:adverse effects*; D013902:Radiography, Thoracic