Schematic Illustration of the Phases of Cardiac Cycle.

Contexts in source publication

Context 1

... cardiac cycle is divided into two main phases; ventricular diastole and ventricular systole. [20][21] Ventricular diastole is subdivided into isovolumic (isovolumetric) relaxation, rapid passive filling, slow filling, and rapid active filling (atrial contraction) whereas ventricular systole is divided into isovolumic (isovolumetric) contraction and ventricular ejection (Figure 1). Each of the phases and subphases of the cardiac cycle can be illustrated in real time using pulsed wave Doppler imaging (Figure 2). ...

Context 2

... ejection is initially rapid, followed by slow ejection and then a fall in intraventricular pressure (protodiastole). [23] As the intraventricular pressures almost fall below the pressure in the great vessels, the semilunar valves close the end of the systole (Figures 1 &2). ...