Effect of medications on cardiac output

摘要: The purpose of the cardiovascular system is to provide a flexible, variable mechanism for provision oxygen and removal waste products from metabolising tissue. Previous chapters have outlined enormous capacity heart modify output according physiological requirements such as exercise dealt with changes in cardiac function which result disease states. Precisely because its role homeostasis, susceptible wide range pharmacological interventions, may an increase or reduction direct effects on muscle, vasomotor tone, through neural hormonal mediators influence function. Moreover, haemodynamic any intervention will depend patients (e.g. A patient failure respond pressor agent fall little change arterial pressure, whereas subject normal ventricular maintain pressure rise) pre-existing state reducing pre-load markedly elevated filling pressures not affect output, but whom low due diuretic-induced dehydration fall).