Medical dictionary. 2011.
isovolumic relaxation time — (IVRT) the duration of the period of isovolumic relaxation (see under period), normally 50 to 70 msec … Medical dictionary
period — 1. A certain duration or division of time. 2. One of the stages of a disease, e.g., p. of incubation, p. of convalescence. SEE ALSO: stage, phase. 3. Colloquialism for menses. 4. Any of the horizontal rows of chemical elements in the … Medical dictionary
isovolumetric relaxation phase — isovolumic relaxation phase period of isovolumic relaxation … Medical dictionary
relaxation — 1. Loosening, lengthening, or lessening of tension in a muscle. 2. In nuclear magnetic resonance, r. is the decay in magnetization of protons after the direction of the surrounding magnetic field is changed; the different rates of r. for… … Medical dictionary
isovolumetric period — isovolumic period in the cardiac cycle, an interval during which the cardiac muscle fibers are contracting or relaxing but the valves are all closed, so that ventricular pressure changes rapidly while volume remains constant; see p. of isovolumic … Medical dictionary
isovolumetric relaxation — isovolumic relaxation see under period … Medical dictionary
Cardiac cycle — Cardiac events occurring in the cardiac cycle. Two complete cycles are illustrated. The cardiac cycle is a term referring to all or any of the events related to the flow or blood pressure that occurs from the beginning of one heartbeat to the… … Wikipedia
Pressure volume diagram — Thermodynamics … Wikipedia
