third degree atrioventricular block

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 ventricular pacemaker is activated.

Congenital complete third degree atrioventricular (AV) block. No P wave is followed by a His bundle potential, whereas each ventricular depolarization is preceded by a His bundle potential. HBE, His bundle electrogram; RA, right atrium; RV,right ventricle.


Medical dictionary. 2011.

Look at other dictionaries:

  • Third-degree atrioventricular block — Classification and external resources ICD 10 I44.2 …   Wikipedia

  • third degree heart block — the complete form of heart block, in which no impulses are conducted; often used specifically for third degree atrioventricular block. Called also complete heart b …   Medical dictionary

  • Second-degree atrioventricular block — Classification and external resources ICD 10 I44.1 ICD 9 426.12 …   Wikipedia

  • 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 — Infobox Disease Name = Atrioventricular block Caption = DiseasesDB = ICD10 = ICD10|I|44|0|i|30 ICD10|I|44|3|i|30 ICD9 = ICD9|426.0 ICD9|426.1 ICDO = OMIM = MedlinePlus = eMedicineSubj = med eMedicineTopic = 189 MeshID = D006327 An… …   Wikipedia

  • First degree AV block — Infobox Disease Name = First degree AV block Caption = DiseasesDB = 10477 ICD10 = ICD10|I|44|0|i|30 ICD9 = ICD9|426.11 ICDO = OMIM = MedlinePlus = eMedicineSubj = emerg eMedicineTopic = 233 MeshID = First degree AV block or PR prolongation is a… …   Wikipedia

  • high grade atrioventricular block — either second or third degree atrioventricular b …   Medical dictionary

  • complete atrioventricular block — third degree atrioventricular b …   Medical dictionary

  • congenital complete heart block — third degree atrioventricular block that presents in the fetal or neonatal period and is caused by defective development of the atrioventricular junctional tissue; it may be associated with other cardiac anomalies …   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

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