period of isovolumic relaxation — a short interval (0.05 second) during ventricular diastole, immediately following the ejection period and lasting from semilunar valve closing to atrioventricular valve opening; as the muscle fibers relax, the ventricular pressure drops and the… … Medical dictionary
Ejection (sports) — In sports, an ejection (or dismissal or sending off) is a disqualifying action assessed to a player or coach by a game official (such as a referee or umpire), usually for unsportsmanlike conduct.Many ejections occur for such actions as fighting… … Wikipedia
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
ejection — 1. The act of driving or throwing out by physical force from within. 2. That which is ejected. SYN: ejecta. [L. ejectio, from ejicio, to cast out] * * * ejec·tion (e jekґshən) [L. ejectus, past part. of ejicere to cast out] 1. the act of… … Medical dictionary
ejection phase — see under period … Medical dictionary
sphygmic period — ejection p … Medical dictionary
Coronal mass ejection — A coronal mass ejection in time lapse imagery obtained with the LASCO instrument. The Sun (center) is obscured by the coronagraph s mask. (September 30 – October 1, 2001) A coronal mass ejection (CME) is a massive burst of solar wind, other light … Wikipedia
preejection period — (PEP) the interval between the onset of ventricular depolarization and the onset of ventricular ejection; it is one of the systolic time intervals (q.v.) used in assessing left ventricular performance and is calculated by subtracting the left… … Medical dictionary
interval — A time or space between two periods or objects; a break in continuity. [L. inter vallum, space between breastworks in a camp, an i., fr. vallum, a rampart, wall] a c i. the i. between the onset of the a wave and that of the c wave of the jugular… … Medical dictionary
PEP — The abbreviation PEP stands for a number of things in medicine including post exposure prophylaxis. Prophylaxis means a defense or protection. Post exposure prophylaxis, for example, might concern the treatment of a health care worker exposed by… … Medical dictionary
