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 second.

Medical dictionary. 2011.

Look at other dictionaries:

  • first degree heart block — the mildest form of heart block, in which conduction time is prolonged but all impulses are conducted; often used specifically for first degree atrioventricular block …   Medical dictionary

  • 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

  • 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

  • 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

  • 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

  • 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

  • Heart block — Classification and external resources ICD 10 I44 I45 ICD 9 …   Wikipedia

  • Heart block — A block in the conduction of the normal electrical impulses in the heart. * * * heart block n incoordination of the heartbeat in which the atria and ventricles beat independently due to defective transmission through the bundle of His and which… …   Medical dictionary

  • Bundle branch block — ICDO = OMIM = MedlinePlus = eMedicineSubj = ped eMedicineTopic = 2501 eMedicine mult = eMedicine2|ped|2500 MeshName = Bundle Branch+Block MeshNumber = C14.280.067.558.323 A bundle branch block refers to a defect of the heart s electrical… …   Wikipedia

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