A, ARTIFICIAL, BSIP, CARDIAC, CARDIO-VASCULAR, CARDIOLOGY, CARDIOPATHY, CAVALLINI, CHAMBER, CHEST, DOUBLE, ELECTROSTIMULATION, EXAMINATION, FRONTAL, HEART, HUMAN, IMAGERY, IMPLANT, IMPLANTED, INSUFFICIENCY, JAMES, MEDICAL, MEDICINE, ON, PACEMAKER, RADIOGRAPHY, RESULT, SCIENTIFIC, SEEN, STIMULATOR, SYSTEM, THORAX, TREATMENT, X-RAY,