Electrocardiogram and vectorcardiogram of Macaca mulatta in various postures

Abstract
Electrocardiograms and vectorcardiograms of 11 normal monkeys placed in dorsal-supine, right lateral, left lateral, and sitting positions were analyzed. Initial forces were directed cephalad, dextrad, and ventrad. Intermediate forces were directed caudad and slightly sinistrad, and either dorsad or ventrad. Terminal forces were directed cephalad, dextrad, and dorsad.