atrioventricular block — AV block impairment of conduction of cardiac impulses from the atria to the ventricles, usually due to a block in the atrioventricular junctional tissue (atrioventricular node, bundle of His, or bundle branches). It is generally subclassified as… … Medical dictionary
atrioventricular block — noun recurrent sudden attacks of unconsciousness caused by impaired conduction of the impulse that regulates the heartbeat • Syn: ↑heart block, ↑Adams Stokes syndrome, ↑Stokes Adams syndrome • Hypernyms: ↑cardiac arrhythmia, ↑arrhythmia … Useful english dictionary
Second-degree atrioventricular block — Classification and external resources ICD 10 I44.1 ICD 9 426.12 … Wikipedia
Third-degree atrioventricular block — Classification and external resources ICD 10 I44.2 … Wikipedia
third degree atrioventricular block — a third degree heart block due to total cessation of impulse conduction through the atrioventricular junctional tissue; no correspondence exists between atrial and ventricular activity, and ventricular asystole and death occur unless a… … Medical dictionary
second degree atrioventricular block — a second degree heart block due to partial impairment of impulse conduction through the atrioventricular junctional tissue; impulses intermittently fail to reach the ventricles (dropped beats). It occurs as two types: type I is Wenckebach or… … Medical dictionary
first degree atrioventricular block — a first degree heart block due to a block in the atrioventricular junctional tissue; the rate of conduction of impulses from the atria to the ventricles is slowed, resulting in regular electrocardiographic P–R intervals of greater than 0.21… … Medical dictionary
complete atrioventricular block — third degree atrioventricular b … Medical dictionary
high grade atrioventricular block — either second or third degree atrioventricular b … Medical dictionary
block — 1. To obstruct; to arrest passage through. 2. A condition in which the passage of an electrical impulse is arrested, wholly or in part, temporarily or permanently. 3. SYN: atrioventricular b.. [Fr. bloquer] alveolocapillary b. the presence of… … Medical dictionary
