- atrial beat
- an ectopic beat originating within the atria; it occurs when the sinus node does not fire or fires ineffectively.
Medical dictionary. 2011.
atrial beat
Look at other dictionaries:
atrial premature complex — (APC) a single ectopic atrial beat arising prematurely, manifest electrocardiographically as an abnormally shaped premature P wave, usually with a slightly increased PR interval. It occurs in normal hearts, sometimes associated with the use of… … Medical dictionary
atrial fibrillation — n very rapid uncoordinated contractions of the atria of the heart resulting in a lack of synchronism between heartbeat and pulse beat called also auricular fibrillation * * * see fibrillation * * * (AF) (AFib) an arrhythmia in which minute areas… … Medical dictionary
beat — 1. To strike; to throb or pulsate. 2. A stroke, impulse, or pulsation, as of the heart or pulse. 3. Activity of a cardiac chamber produced by catching a stimulus generated elsewhere in the … Medical dictionary
Atrial fibrillation — | MeshID = D001281 Atrial fibrillation (AF or afib) is a cardiac arrhythmia (abnormal heart rhythm) that involves the two upper chambers (atria) of the heart. It can often be identified by taking a pulse and observing that the heartbeats don t… … Wikipedia
Atrial myxoma — An atrial myxoma is a non cancerous tumor in the upper left or right side of the heart. It grows on the wall (atrial septum) that separates the two sides of the heart.CausesA myxoma is a primary heart (cardiac) tumor. This means that the tumor… … Wikipedia
atrial bigeminy — an arrhythmia consisting of the repetitive sequence of one atrial premature complex followed by one normal sinus impulse. Atrial bigeminy; each sinus beat is followed by an atrial premature complex … Medical dictionary
atrial premature beat — (APB) see under complex … Medical dictionary
Premature atrial contraction — Infobox Disease Name = PAGENAME Caption = DiseasesDB = ICD10 = ICD10|I|49|1|i|30 ICD9 = ICD9|427.61 ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = D018880 Premature atrial contractions (PACs) are a type of premature heart… … Wikipedia
Multifocal atrial tachycardia — For other uses, see MAT (disambiguation). Multifocal atrial tachycardia Classification and external resources ICD 9 427.89 eMedicine article/759135 Multifocal atrial tachycardia … Wikipedia
wandering atrial pacemaker — a condition in which the site of origin of the impulses controlling the heart rate shifts from one point to another within the atria, including the sinus node, changing with almost every beat. P waves and PR intervals vary, and the rate of… … Medical dictionary
