The action-potential duration and contractile response of the intact heart related to the preceding interval and the preceding beat in the dog and cat

摘要

1. Simultaneous measurements were made in anaesthetized dogs of monophasic action potentials from the right ventricle and of the maximum rate of rise of left ventricular pressure (dPlv/dtmax). Atrio-ventricular dissociation was induced and the heart paced via right ventricular electrodes.