Med-Surg: Telemetry 2022/23 Exam with Complete Solutions

electrical systole - ANSWER-activation excitation depolarization electrical diastole - ANSWER-recovery repolarization mechanical systole - ANSWER-shortening contraction emptying mechanical diastole - ANSWER-lengthening relaxation filling automaticity - ANSWER-ability to initiate and maintain electrical rhythm excitability - ANSWER-ability to respond to electrical stimulus conductivity - ANSWER-ability to transfer that electrical stimulus to the neighboring cell contractility - ANSWER-the ability of myocardial cells to shorten and contract in response to an electrical stimulus force generated by the contracting myocardium under any given condition cardiac output - ANSWER-stroke volume X heart rate amount of blood pumped by each ventricle in liters per minute stroke volume - ANSWER-the amount of blood ejected with each heart beat affects by preload, afterload, and contractility preload - ANSWER-volume of blood in ventricles at the end of diastole (ventricular filling) afterload - ANSWER-the amount of resistance the ventricle must overcome to eject the blood out of the heart SA node - ANSWER-primary pacemaker of the heart initiates electrical impulses at rate of 60-100 bpm