Cardiac Nurs 5315 Study Guide Rated A+

normal cardiac output and equation {Ans: 5 L/min HR in BPM x SV= CO}stroke volume {Ans: amount of blood ejected by the ventricle for each cardiac cycle (heart beat) dependent on/upon force of the contraction}What happens to EF in diastolic and systolic heart failure? {Ans: no change in diastolic heart failure decreases in systolic heart failure}the greater the tension cardiac contraction {Ans: the stronger the contraction}normal ejection fraction and equation {Ans: 55-65% SV /EDV = EF}diastolic BP {Ans: lowest arterial blood pressure present during ventricular relaxation relaxation and filling of the heart}Factors which decrease contraction {Ans: Beta blockers- block the effects of the catecholamines Heart failure with systolic dysfunction, Acidosis, Hypoxia/hypercapnia Nondihydropyridine calcium channel blockers}after load is comprised of what? {Ans: aortic pressure systemic vascular resistance}decrease in CO {Ans: decrease in ABP immediately}after load {Ans: resistance that the ventricle pushes against to contract}if aortic pressure and SVP is high {Ans: high afterload increases work of ventricle = hypertrophy}pre load is comprised of what? {Ans: end diastolic pressure end diastolic volume}Factors which increase contraction {Ans: • Catecholamines- increase the activity of the calcium pump in the sarcoplasmic reticulum;