THRESHOLD OF CARDIAC STIMULATION: ACUTE STUDIES.
D000818:Animals; D004285:Dogs; D004558:Electric Stimulation; D006327:Heart Block; D006329:Heart Conduction System; D010138:Pacemaker, Artificial; D012106:Research
DOGS; ELECTRIC STIMULATION; EXPERIMENTAL LAB STUDY; HEART BLOCK; HEART CONDUCTION SYSTEM; PACEMAKER, ARTIFICIAL