| BER | basic electrical rhythm |
|---|---|
| CER | capital expenditure review; ceramide; conditioned emotional response; control electrical rhythm; cor... |
| CR | calculation rate; calculus removed; calorie-restricted; cardiac rehabilitation; cardiac resuscitatio... |
| F | and R force and rhythm [of pulse] |
| F&R | force and rhythm [pulse] |
| rhythm | <cardiology> The regularity of the heartbeat. Can be assessed by taking the pulse. (23 Aug 1998) |
|---|---|
| rhythm method | <gynaecology> A contraceptive method whereby abstinence is practiced a few days before and after the estimated day of ovulation. (12 Dec 1998) |
| right atrioventricular valve | <anatomy> This heart valve, named for its three cusps (leaflets), divides the right atrium and the right ventricle. When the right atrium contracts blood flows through the tricuspid valve into the right ventricle. On closure, the tricuspid prohibits the backflow of blood into the right atrium. (19 Jan 1998) |
| right crus of atrioventricular bundle | The right leg or branch of the atrioventricular bundle which diverges from the left crus just below the membranous portion of the interventricular septum to descend the septal wall of the right ventricle and ramify beneath the endocardium. Synonym: crus dextrum fasciculi atrioventricularis. (05 Mar 2000) |
| persistent atrioventricular canal | A condition that is caused when the atrial and ventricular septa fail to meet, as in normal development, resulting in a low atrial and high ventricular septal defect or a common atrioventricular canal. Synonym: endocardial cushion defect. (05 Mar 2000) |
| circadian rhythm | The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs and stimuli, hormone secretion, sleeping, feeding, etc. This rhythm seems to be set by a 'biological clock' which seems to be set by recurring daylight and darkness. (12 Dec 1998) |
| circus rhythm | A contraction or excitation wave traveling continuously in circular fashion around a ring of muscle or through the wall of the heart. Synonym: circus rhythm. (05 Mar 2000) |
| complete atrioventricular dissociation | A-V dissociation not interrupted by ventricular captures. Synonym: complete A-V block. (05 Mar 2000) |
| concordant atrioventricular connections | Connections in which the atrial chambers connect to the morphologically appropriate ventricles. (05 Mar 2000) |
| coronary sinus rhythm | An ectopic atrial rhythm supposedly originating from a pacemaker at the mouth of the coronary sinus; recognised in the electrocardiogram by P-waves that are inverted in leads II, III, and a VI with a normal or prolonged P-R interval; an ectopic ("lower") atrial rhythm. (05 Mar 2000) |
| coupled rhythm | That cardiac rhythm when each beat of the dominant rhythm (sinus or other) is followed by a premature beat, with the result that the heartbeats occur in pairs (bigeminy). Synonym: coupled rhythm. (05 Mar 2000) |
| posterior cusp of atrioventricular valve | The posterior leaflet of either the tricuspid or mitral valves. Synonym: cuspis posterior valvae atrioventricularis dextrae/sinistrae. (05 Mar 2000) |
| sinus rhythm | The normal regular cardiac rhythm stimulated by the sinoatrial node. (27 Sep 1997) |
| delta rhythm | Brain waves in the electroencephalogram which have a frequency below 3 1/2 per second. They are typical in deep sleep, in infancy, and in serious brain disorders. (12 Dec 1998) |
| systolic gallop rhythm | An obsolete term for extra sounds, usually clicks, heard during systole. (05 Mar 2000) |