- junctional pacemaker
- atrioventricular junctional p.
Medical dictionary. 2011.
junctional pacemaker
Look at other dictionaries:
atrioventricular junctional pacemaker — an ectopic pacemaker occurring in the atrioventricular junction … Medical dictionary
Pacemaker potential — In the heart, the pacemaker potential is the voltage created by impulses from an artificial electronic pacemaker or the SA node which drives the rhythmic firing of the heart.The pacemaker potential brings the membrane potential to the threshold… … Wikipedia
Junctional escape beat — A junctional escape beat is a delayed heartbeat originating not from the atrium but from an ectopic focus somewhere in the AV junction. It occurs when the rate of depolarization of the SA node falls below the rate of the AV node. This dysrhythmia … Wikipedia
atrioventricular junctional escape — the occurrence of one or more escape beats in which the atrioventricular node acts as the cardiac pacemaker; see also under beat and rhythm … Medical dictionary
atrioventricular (AV) junctional rhythm — the heart rhythm that results when the atrioventricular junction acts as pacemaker … Medical dictionary
usurpation — Assumption of pacemaker function of the heart by a subsidiary focus as a result of its own increased automaticity; e.g., accelerated junctional pacemaker takes command when it exceeds the sinus rate. [L. usurpo, pp. atus, to seize] … Medical dictionary
Supraventricular tachycardia — Classification and external resources Lead II electrocardiogram strip showing SVT with a heart rate of about 150. ICD 10 I … Wikipedia
Cardiac dysrhythmia — Arrhythmia redirects here. It is not to be confused with Erythema. Cardiac dysrhythmia Classification and external resources Ventricular fibrillation (V Fib or VF) an example of cardiac arrhythmia. ICD … Wikipedia
rhythm — 1. Measured time or motion; the regular alternation of two or more different or opposite states. 2. SYN: r. method. 3. Regular or irregular occurrence of an electrical event in the electrocardiogram or electroencephalogram. SEE ALSO: wave. 4.… … Medical dictionary
Tachycardia — ECG showing sinus tachycardia with a rate of about 100 beats per minute. ICD 10 I47 I … Wikipedia
