II. Pathophysiology
- Impaired conduction in Atria, AV Node or His-Purkinje
III. Types: First Degree Atrioventricular Node Block
- Causes
- Normal finding in >1% of healthy adults
- Inferior wall ischemia (right Coronary Artery) if onset in acute presentations
- Increased vagal tone (responds to Atropine)
- Hypothyroidism
- Medications
- Findings
- Consistently Prolonged PR Interval >0.20 seconds
- Each P Wave is conducted and associated with a QRS Complex
- Treatment
- None needed
IV. Types: Second Degree Atrioventricular Node Block
- Also known as Sinoatrial Exit Block
- Type I Second Degree Atrioventricular Node Block
- Known as Mobitz I AV Block or Wenckeback Conduction
- Acute condition affecting AV Node
- Most often due to excess vagal tone
- EKG Findings
- Progressive increase PR Interval until beat/QRS Complex dropped (non-conducted P Wave)
- Cycle repeats after beat dropped, with PR Interval resetting aftet the dropped beat
- Causes: Functional, reversible defects
- Inferior Myocardial Ischemia
- Rheumatic Fever
- Digitalis Toxicity
- Increased vagal tone
- Beta Blocker
- Response to Maneuvers
- Bradycardia improves in response to Atropine and Exercise
- Worsens with carotid massage
- Type II Second Degree Atrioventricular Node Block
- Known as Mobitz II Block
- Chronic condition affects infranodal conduction path
- Intermittent conduction defect with a consistent frequency of non-conducted P Wave
- Described as a ratio (e.g. 3:2) of P Waves to QRS Complexes
- EKG Findings
- Regularly dropped QRS waves at consistent interval is typical
- Other findings
- No change in PR Interval (remains constant unlike Mobitz 1)
- RR interval is constant, except for the missed beat, which is then double the PP interval
- QRS Duration does not differentiate Mobitz 1 from 2 (either may have a normal or prolonged QRS)
- Although typically infranodal, the defect may lie within the AV Node in some cases
- Causes: Structural, non-reversible defects
- Anterior Wall or Anteroseptal Myocardial Infarction (most common cause)
- Infiltrative, fibrotic or sclerotic cardiac conditions
- Lenegre Disease
- Lev Disease
- Cardiomyopathy
- Lymphoma and other cardiac tumors
- Cardiac Amyloidosis
- Collagen vascular disease
- Response to Maneuvers
- Prognosis
- Worse than Mobitz I Block
- High risk of progression to complete Heart Block (third degree block)
- Increased risk of Sudden Cardiac Death (if third degree AV Block occurs)
- Indication for cardiac Pacemaker if reversible cause is not identified
- Risk based on EKG Presentation (in increasing order of risk)
- Mobitz II with narrow QRS Complex
- Mobitz II with wide QRS Complex
- Mobitz II with narrow QRS and high grade AV Block
- Mobitz II with wide QRS Complex and high grade AV Block
- Management
- Urgent cardiology Consultation
- Pacemaker indicated
V. Types: Third Degree Atrioventricular Node Block (Complete AV Nodal Block)
- Findings
- Complete electrical and mechanical AV dissociation
- P and QRS waves are present but unrelated
- Images
- Subtypes
- Congenital Third Degree AV Node Block (narrow complex)
- Acquired Third Degree AV Node Block (wide complex)
- Wide complex escape beat at 30 to 45 bpm (infranodal)
- Hemodynamic instability requires stabilization
VI. References
- Berberian, Brady, Mattu (2024) Crit Dec Emerg Med 38(7): 12-3
- Vandersteenhoven and Brady (2025) Crit Dec Emerg Med 39(2): 13-5
Images: Related links to external sites (from Bing)
Related Studies
| Definition (NCI) | An electrocardiographic finding of delayed or blocked cardiac electrical impulse conduction from the atria to the ventricles at the level of the atrioventricular node. |
| Definition (MSH) | Impaired impulse conduction from HEART ATRIA to HEART VENTRICLES. AV block can mean delayed or completely blocked impulse conduction. |
| Concepts | Disease or Syndrome (T047) |
| MSH | D054537 , D006327 |
| ICD9 | 426.10 |
| ICD10 | I44.3 , I44.30 |
| SnomedCT | 195043007, 195040005, 233917008, 58547007 |
| English | ATRIOVENTRICULAR BLOCK, AV BLOCK, HEART BLOCK AV, Atrioventricular block NOS, Atrioventricular block unspec., Atrioventricular block unspecified, Atrioventricular block, unspecified, Atrioventricular Conduction Blocks, Block, AV, Atrioventricular Blocks, AV Blocks, Atrioventricular Conduction Block, Conduction Block, Atrioventricular, Conduction Blocks, Atrioventricular, Blocks, AV, AV Block, atrioventricular block, atrioventricular block (diagnosis), A-V block, Atrioventricular Block, Atrioventricular block (NOS), Heart block atrioventricular, AV block (NOS), Heart block AV, Atriovent block NOS, Unspecified atrioventricular block, Atrioventricular Block [Disease/Finding], atrioventricular blocks, av block, av heart block, Atrioventricular block NOS (disorder), Atrioventricular block unspecified (disorder), Atrioventricular heart block, Atrioventricular Block by ECG Finding, Atrioventricular Block by EKG Finding, AV block, Atrioventricular block, AVB - Atrioventricular block, Atrioventricular block (disorder), atrioventricular; block, block; atrioventricular, AV block, NOS, Atrioventricular block, NOS, atrioventricular heart block, Block;atrioventricular |
| Italian | Blocco atrio-ventricolare, Blocco atrio-ventricolare NAS, Blocco ATRIO-VENTRICOLARE, Blocco ATRIO-VENTRICOLARE (non specificato), Blocco cardiaco atrio-ventricolare, Blocco atrio-ventricolare (non specificato), Blocco atrioventricolare non specificato, Blocco cardiaco atrioventricolare, Blocco AV, Blocco atrioventricolare, Blocco della conduzione atrioventricolare |
| Dutch | atrioventriculair blok NAO, atrioventriculair blok, niet-gespecificeerd, atrioventriculair blok (NAO), AV-blok (NAO), hartblok AV, hartblok atrioventriculair, AV-blok, atrioventriculair; block, block; atrioventriculair, atrioventriculair blok, Atrioventriculair blok |
| French | Bloc auriculo-ventriculaire SAI, Bloc auriculoventriculaire SAI, Bloc auriculoventriculaire non précisé, Bloc AV SAI, Bloc AV, Bloc auriculoventriculaire, Bloc atrio-ventriculaire, BAV (Bloc AtrioVentriculaire), Bloc auriculo-ventriculaire, Bloc atrioventriculaire, BLOC ATRIO-VENTRICULAIRE, BLOC AURICULO-VENTRICULAIRE |
| German | atrioventrikulaerer Block, unspezifisch, Herzblock AV, atrioventrikulaerer Block NNB, AV-Block (NNB), Herzblock atrioventrikulaer, atrioventrikulaerer Block (NNB), Atrioventrikulärer Block, AV-Block, ATRIOVENTRIKULAERER BLOCK, AV-BLOCK, HERZBLOCK AV, atrioventrikulaerer Block |
| Portuguese | Bloqueio AV, Bloqueio auriculoventricular NE, Bloqueio AV (NE), Bloqueio auriculoventricular, BLOQUEIO AURICULO-VENTRICULAR, BLOQUEIO CARDIACO AURICULO-VENTRI, Bloqueio Atrioventricular, Bloqueio Aurículo-Ventricular, Bloqueio atrioventricular |
| Spanish | Bloqueo AV, Bloqueo aurículoventricular NEOM, Bloqueo auriculoventricular no especificado, Bloqueo cardiaco auriculoventricular, Bloqueo cardiaco AV, Bloqueo auriculoventricular (NEOM), Bloqueo AV (NEOM), Bloqueo Atrioventricular, BLOQUEO A-V, BLOQUEO AURICULO-VENTRICULAR, BLOQUEO CARDIACO A-V, bloqueo auriculoventricular (trastorno), bloqueo aurículo-ventricular, bloqueo aurículo-ventricular (trastorno), bloqueo auriculoventricular, bloqueo auriculoventricular, SAI, bloqueo auriculoventricular, SAI (trastorno), bloqueo auriculoventricular no especificado, bloqueo auriculoventricular no especificado (trastorno), bloqueo AV, Bloqueo Auriculoventricular, bloqueo A-V, bloqueo auriculoventricular (concepto no activo), Bloqueo auriculoventricular |
| Japanese | 房室ブロックＮＯＳ, 房室ブロック、詳細不明, 房室ブロック（ＮＯＳ）, ﾎﾞｳｼﾂﾌﾞﾛｯｸｼｮｳｻｲﾌﾒｲ, ﾎﾞｳｼﾂﾌﾞﾛｯｸ, ﾎﾞｳｼﾂﾌﾞﾛｯｸNOS, ＡＶブロック, ＡＶブロック（ＮＯＳ）, AVﾌﾞﾛｯｸ, 心臓房室ブロック, AVﾌﾞﾛｯｸNOS, ｼﾝｿﾞｳﾎﾞｳｼﾂﾌﾞﾛｯｸ, A-Vブロック, 伝導ブロック-房室, AVブロック, 房室伝導ブロック, 房室ブロック |
| Finnish | Eteis-kammiokatkos |
| Russian | АТРИОВЕНТРИКУЛЯРНАЯ БЛОКАДА, ATRIOVENTRIKULIARNAIA BLOKADA |
| Czech | atrioventrikulární blokáda, AV blok, Srdeční AV blokáda, Atrioventrikulární blokáda NOS, Srdeční blokáda atrioventrikulární, Atrioventrikulární blokáda (NOS), AV blok (NOS), Atrioventrikulární blokáda, Atrioventrikulární blokáda, blíže neurčená, atrioventrikulární blok, AV blokáda, AVB, síňokomorová blokáda, porušené atrioventrikulární vedení |
| Swedish | Atrioventrikulär block |
| Polish | Blok przedsionkowo-komorowy, Blok AV |
| Hungarian | Szívblock, AV, Atrioventricularis block, nem meghatározott, Atrioventricularis blokk, AV-block, AV-block (k.m.n.), Atrioventricularis blokk (k.m.n.), Atrioventricularis blokk k.m.n., Szívblock, atrioventricularis |
| Croatian | ATRIOVENTRIKULSKI BLOK, ATRIOVENTRIKULARNI BLOK, AV BLOK |
| Norwegian | A-V-blokk, AV-blokk, Atrioventrikulært blokk |
Ontology: Heart Block (C0018794)
| Definition (MSHCZE) | Porucha vedení srdečního impulsu, která se může objevit kdekoli na jeho dráze, např. přímo v sinoatriálním uzlu (Keith-Flackův uzel, NODUS SINOATRIALIS) a pravé síni (SA sinoatriální blokáda) nebo mezi síní a komorou (AV atrioventrikulární blokáda). Srdeční blokády mohou být klasifikovány podle délky trvání, podle frekvence nebo úplnosti přerušení vedení impulsu. Reverzibilita závisí na stupni strukturální nebo funkční poruchy. |
| Definition (CSP) | impairment of conduction in heart excitation; often applied specifically to atrioventricular heart block. |
| Definition (MSH) | Impaired conduction of cardiac impulse that can occur anywhere along the conduction pathway, such as between the SINOATRIAL NODE and the right atrium (SA block) or between atria and ventricles (AV block). Heart blocks can be classified by the duration, frequency, or completeness of conduction block. Reversibility depends on the degree of structural or functional defects. |
| Concepts | Disease or Syndrome (T047) |
| MSH | D006327 |
| ICD10 | I45.9 |
| SnomedCT | 155354000, 266302004, 266303009, 195038000, 58547007, 155359005, 233916004 |
| English | Blocks, Heart, Heart Blocks, Block, Heart, HEART BLOCK, Heart block NOS, heart block, heart block (diagnosis), Heart Block, Block heart, Heart block (NOS), Heart Block [Disease/Finding], blockages heart, block heart, blocks heart, blocked heart, heart blockage, blockage heart, heart blocks, Conduction block, Block - heart, Heart block NOS (disorder), Heart block, HB - Heart block, Heart block (disorder), block; cardiac, block; conduction, block; heart, block; myocardial, cardiac; block, conduction; block, heart; block, myocardial; block, Heart block, NOS, Heart block (disorder) [Ambiguous], Block;heart |
| French | BLOC CARDIAQUE, Bloc cardiaque SAI, Bloc cardiaque |
| Portuguese | BLOQUEIO CARDIACO, Bloqueio cardíaco NE, Bloqueio cardíaco, Dissociação Auriculoventricular, Bloqueio Cardíaco |
| Spanish | BLOQUEO CARDIACO, Bloqueo cardiaco, Bloqueo cardiaco NEOM, Bloqueo cardiaco (NEOM), bloqueo cardíaco, SAI (trastorno), Heart block NOS, bloqueo cardíaco, SAI, Disociación Aurículo-Ventricular, bloqueo cardíaco (trastorno), bloqueo cardíaco, Bloqueo Cardíaco |
| German | HERZBLOCK, Herzblock NNB, Block Herz, Herzblock (NNB), Herzblock |
| Dutch | hartblok, hartblok NAO, hartblok (NAO), block; cardiaal, block; geleiding, block; hart, block; myocard, cardiaal; block, geleiding; block, hart; block, myocard; block, Blok, hart-, Hartblok |
| Italian | Blocco cardiaco (NAS), Blocco cardiaco NAS, Blocco cardiaco |
| Japanese | 心ブロックＮＯＳ, 心ブロック（ＮＯＳ）, 心ブロック, ｼﾝﾌﾞﾛｯｸ, ｼﾝﾌﾞﾛｯｸNOS |
| Swedish | Hjärtblock |
| Czech | srdce - blokáda, Srdeční blokáda NOS, Srdeční blokáda, Srdeční blokáda (NOS) |
| Finnish | Eteis-kammiokatkos |
| Russian | PREDSERDNO-ZHELUDOCHKOVAIA BLOKADA, PREDSERDNO-ZHELUDOCHKOVAIA DISSOTSIATSIIA, ATRIOVENTRIKULIARNAIA DISSOTSIATSIIA, SERDTSA BLOKADA, BLOKADA SERDTSA, АТРИОВЕНТРИКУЛЯРНАЯ ДИССОЦИАЦИЯ, БЛОКАДА СЕРДЦА, ПРЕДСЕРДНО-ЖЕЛУДОЧКОВАЯ БЛОКАДА, ПРЕДСЕРДНО-ЖЕЛУДОЧКОВАЯ ДИССОЦИАЦИЯ, СЕРДЦА БЛОКАДА |
| Croatian | SRČANI BLOK |
| Polish | Blok serca |
| Hungarian | Szívblock, Szívblock (k.m.n.), Szívblock k.m.n. |
| Norwegian | Hjerteblokk |
Ontology: Sinoatrial Block (C0037188)
| Definition (MSH) | Disturbance in the atrial activation that is caused by transient failure of impulse conduction from the SINOATRIAL NODE to the HEART ATRIA. It is characterized by a delayed in heartbeat and pauses between P waves in an ELECTROCARDIOGRAM. |
| Concepts | Disease or Syndrome (T047) |
| MSH | D012848 |
| ICD10 | I45.5 |
| SnomedCT | 65778007 |
| English | Blocks, Sinoatrial, Sinoatrial Blocks, Block, Sinoatrial, SA BLOCK, SINOATRIAL BLOCK, Blocks, Sinoatrial Exit, Exit Blocks, Sinoatrial, Block, Sinoatrial Exit, Sinoatrial Exit Block, Exit Block, Sinoatrial, Sinoatrial Exit Blocks, Sinoatrial Block, sinoatrial block (diagnosis), sinoatrial block, Heart block sinoatrial, Heart block sinoauricular, SA block, Sinoatrial Block [Disease/Finding], sinoatrial heart block, sa block, Exit block, Sinoatrial block, Sinoauricular block, Sinoatrial block (disorder), block; sinoatrial, block; sinoauricular, sinoatrial; block, sinoauricular; block, Sinoatrial block, NOS, Sinoauricular block, NOS |
| German | SINUATRIALER BLOCK, Herzblock sinoatrial, Herzblock sinuaurikulaer, SA BLOCK, Exitblock, sinuatrialer Block, Block, sinuatrialer, SA-Block, Sinuatrialer Block, Sinuaurikulärer Block |
| Italian | Blocco seno-atriale, Blocco cardiaco senoatriale, Blocco d'uscita senoatriale, Blocco in uscita, Blocco senoatriale |
| Dutch | hartblok sino-auriculair, SA-blok, hartblok sino-atriaal, uitgangsblok, block; sino-atriaal, block; sino-auriculair, sino-atriaal; block, sino-auriculair; block, sino-atriaal blok, Blok, sino-atriaal, Sino-atriaal blok |
| French | Bloc cardiaque sino-auriculaire, Bloc SA, BSA (Bloc de sortie Sino-Atrial), Bloc de sortie sino-atrial, Bloc de sortie sino-auriculaire, BLOC SINO-AURICULAIRE, Bloc de sortie, Bloc sinoauriculaire, Bloc sino-auriculaire, Bloc sino-atrial, Bloc sinoatrial |
| Portuguese | Bloqueio cardíaco sinoauricular, BLOQUEIO SA, BLOQUEIO SINO-AURICULAR, Bloqueio de saída, Bloqueio sinoauricular, Bloqueio Sinoatrial |
| Spanish | Bloqueo cardiaco sinoauricular, Bloqueo cardiaco sinoatrial, Bloqueo SA, BLOQUEO SINOAURICULAR, SINOAURICULAR, BLOQUEO, Bloqueo de salida, Bloqueo Sinoauricular, bloqueo sinoauricular (trastorno), bloqueo sinoauricular, Bloqueo sinoauricular, Bloqueo Sinoatrial |
| Swedish | Sinoatriellt block |
| Japanese | ﾄﾞｳﾎﾞｳﾌﾞﾛｯｸ, 洞房ブロック, S-Aブロック, ｼﾝｼｭﾂﾌﾞﾛｯｸ, 進出ブロック |
| Czech | sinoatriální blokáda, Srdeční sinoatriální blokáda, Sinoatriální blokáda, Srdeční sinoaurikulární blokáda, SA blokáda, Zablokování odvodu |
| Finnish | Sinoatriaalinen katkos |
| Russian | SINOATRIAL'NAIA BLOKADA, SINUSO-PREDSERDNAIA BLOKADA, СИНОАТРИАЛЬНАЯ БЛОКАДА, СИНУСО-ПРЕДСЕРДНАЯ БЛОКАДА |
| Polish | Blok zatokowo-przedsionkowy |
| Hungarian | SA block, Sinoatrialis szívblock, Sinoauricularis szívblock, Sinoatrialis block, Kilépési blokk |
| Norwegian | Sinoatrialt blokk |
Ontology: First degree atrioventricular block (C0085614)
| Definition (NCI_CTCAE) | A disorder characterized by a dysrhythmia with a delay in the time required for the conduction of an electrical impulse through the atrioventricular (AV) node beyond 0.2 seconds; prolongation of the PR interval greater than 200 milliseconds. |
| Definition (NCI) | A disorder characterized by an electrocardiographic finding of prolonged PR interval for a specific population. For adults one common threshold is a PR interval greater than 0.20 seconds. |
| Concepts | Disease or Syndrome (T047) |
| ICD9 | 426.11 |
| ICD10 | I44.0 |
| SnomedCT | 14256006, 195041009, 270492004 |
| LNC | LA17086-2 |
| English | First degree AV block, AV BLOCK FIRST DEGREE, Atrioventricular block, first degree, HEART BLOCK FIRST DEGREE, AV Block First Degree, First Degree AV Block, First Degree Atrioventricular Block, A-V block first degree, first degree atrioventricular block (diagnosis), first degree atrioventricular block, first degree A-V block, 1st degree heart block, Heart block 1st degree, First degree atrioventricular block, Atrioventricular block first degree, Atrioventricular conduction time prolonged, AV block first degree, Heart block AV first degree, Heart block first degree, Atriovent block-1st degr, 1st degree av block, first degree av block, block degree first heart, av first degree block, first degree heart block, First-degree AV heart block, First-degree atrioventricular heart block, AV block-1st degree, Incomplete atrioventricular block, first degree, First degree heart block, First degree atrioventricular block (disorder), block; atrioventricular, first degree, block; heart, first degree, First degree atrioventricular block (disorder) [Ambiguous] |
| Italian | Blocco atrioventricolare di primo grado, Blocco cardiaco di primo grado, Blocco ATRIO-VENTRICOLARE di primo grado, Tempo di conduzione atrioventricolare prolungato, Blocco cardiaco atrio-ventricolare di primo grado |
| Dutch | 1e graads hartblok, eerstegraads atrioventriculair blok, hartblok 1e graads, atrioventriculaire geleidingstijd verlengd, eerstegraads AV-blok, hartblok AV eerstegraads, hartblok eerstegraads, block; atrioventriculair, eerste graad, block; hart, eerste graad, Eerstegraads atrioventriculair block, atrioventriculair blok eerstegraads |
| French | Bloc cardiaque du 1er degré, Temps de conduction auriculo-ventriculaire prolongé, Bloc A-V du premier degré, Bloc AV du premier degré, Bloc du 1er degré, Bloc cardiaque du premier degré, BLOC A.V. PREMIER DEGRE, BLOC AV PREMIER DEGRE, Bloc auriculoventriculaire du premier degré |
| German | atrioventrikulaere Ueberleitungszeit verlaengert, erstgradiger atrioventrikulaerer Block, Herzblock ersten Grades, Herzblock AV ersten Grades, erstgradiger Herzblock, AV-BLOCK I. GRADES, Atrioventrikulaerer Block 1. Grades, HERZBLOCK 1. GRADES, AV-Block ersten Grades, atrioventrikulaerer Block ersten Grades |
| Portuguese | Bloqueio AV do I grau, Tempo de condução auriculoventricular prolongado, Bloqueio cardíaco do I grau, BLOQUEIO DA CONDUCAO CARD DO 1 G, Bloqueio auriculoventricular do I grau, BLOQUEIO AURICULO-VENTRICULAR DO |
| Spanish | Bloqueo AV de primer grado, Bloqueo cardiaco de 1er grado, Bloqueo cardiaco AV de primer grado, Tiempo de conducción auriculoventricular prolongado, Bloqueo cardiaco de primer grado, BLOQUEO A-V DE PRIMER GRADO, bloqueo auriculoventricular de primer grado (trastorno), bloqueo cardíaco de primer grado, bloqueo auriculoventricular de primer grado, bloqueo auriculoventricular incompleto, de primer grado, bloqueo A-V de primer grado, bloqueo auriculo-ventricular incompleto, primer grado, bloqueo auriculoventricular de primer grado (concepto no activo), bloqueo aurículo-ventricular de primer grado (trastorno), bloqueo aurículo-ventricular de primer grado, Bloqueo auriculoventricular de primer grado |
| Japanese | 第一度ＡＶブロック, 第一度房室ブロック, 房室伝導時間延長, 第一度心ブロック, ﾀﾞｲｲﾁﾄﾞｼﾝﾌﾞﾛｯｸ, ﾀﾞｲｲﾁﾄﾞﾎﾞｳｼﾂﾌﾞﾛｯｸ, ﾎﾞｳｼﾂﾃﾞﾝﾄﾞｳｼﾞｶﾝｴﾝﾁｮｳ, ﾀﾞｲｲﾁﾄﾞAVﾌﾞﾛｯｸ |
| Czech | Srdeční blok prvního stupně, Srdeční AV blokáda prvního stupně, Atrioventrikulární blokáda prvního stupně, Srdeční blokáda prvního stupně, Prodloužené atrioventrikulární vedení, AV blok prvního stupně, První stupeň atrioventrikulární blokády |
| Korean | Ⅰ도 심방실 차단 |
| Hungarian | Szívblock, első fokú, Első fokú atrioventricularis block, Atrioventricularis vezetési idő megnyúlt, Első fokú szívblock, AV-block, első fokú, Szívblock, AV, első fokú |
Ontology: Complete atrioventricular block (C0151517)
| Definition (NCI_CTCAE) | A disorder characterized by a dysrhythmia with complete failure of atrial electrical impulse conduction through the AV node to the ventricles. |
| Definition (NCI) | A disorder characterized by an electrocardiographic finding of complete failure of atrial electrical impulse conduction to the ventricles. This is manifested on the ECG by disassociation of atrial and ventricular rhythms. The atrial rate must be faster than the ventricular rate. (CDISC) |
| Concepts | Disease or Syndrome (T047) |
| ICD9 | 426.0 |
| ICD10 | I44.2 |
| SnomedCT | 123265006, 155355004, 195063000, 27885002 |
| LNC | LA17089-6 |
| English | AV BLOCK COMPLETE, Complete AV block, Atrioventricular block, complete, Atrioventricular block third degree, HEART BLOCK COMPLETE, Complete Heart Block, Third Degree Atrioventricular Block, AV Block Third Degree, Third Degree AV Block, third degree atrioventricular block, third degree atrioventricular block (diagnosis), third degree A-V block, Complete atrioventricular block, Atrioventricular block complete, AV block complete, Heart block AV complete, Heart block AV third degree, AV block third degree, Heart block complete, Heart block third degree, Atriovent block complete, Third degree block, Complete heart block NOS, block complete heart, heart block third degree, av block complete, chb, third degree heart block, complete av block, complete heart block, heart block complete, Complete AV Block, Third degree atrioventricular block (disorder), Third degree atrioventricular heart block, Third degree AV block, Complete Atrioventricular Block, Non-Congenital Complete Atrioventricular Block, COMPLETE HEART BLOCK, AV block-3rd degree, Complete heart block, Third degree atrioventricular block, CHB - Complete heart block, Third degree heart block, Complete atrioventricular block (disorder), atrioventricular; block, complete, atrioventricular; block, third degree, block; atrioventricular, complete, block; atrioventricular, third degree, block; heart, complete (atrioventricular), block; heart, third degree (atrioventricular), heart; block, complete (atrioventricular), heart; block, third degree (atrioventricular), Third degree atrioventricular block -RETIRED-, Block;heart;complete |
| Italian | Blocco atrioventricolare completo, Blocco ATRIO-VENTRICOLARE completo, Blocco cardiaco atrio-ventricolare completo, Blocco cardiaco atrio-ventricolare di terzo grado, Blocco cardiaco di terzo grado, Blocco atrio-ventricolare di terzo grado, Blocco atrioventricolare di terzo grado, Blocco cardiaco completo, Blocco ATRIO-VENTRICOLARE di terzo grado |
| Dutch | derdegraads AV-blok, hartblok AV volledige, atrioventriculair block derdegraads, hartblok AV derdegraads, hartblok derdegraads, atrioventriculair block, volledig, hartblok volledige, volledig hartblok, volledig AV-blok, atrioventriculair; block, derde graad, atrioventriculair; block, totaal, block; atrioventriculair, derde graad, block; atrioventriculair, totaal, block; hart, derde graad (atrioventriculair), block; hart, totaal (atrioventriculair), hart; block, derde graad (atrioventriculair), hart; block, totaal (atrioventriculair), Totaal atrioventriculair block, atrioventriculair blok volledig |
| French | Bloc A-V complet, Bloc auriculoventriculaire, complet, Bloc du coeur complet, Bloc cardiaque complet, Bloc auriculo-ventriculaire du troisième degré, Bloc AV complet, Bloc AV du troisième degré, Bloc A-V du troisième degré, Bloc du troisième degré, BLOC A.V. COMPLET, BLOC AV CLOMPLET, Bloc auriculoventriculaire complet |
| German | kompletter Herzblock, drittgradiger AV-Block, AV-Block komplett, Herzblock dritten Grades, Herzblock AV dritten Grades, atrioventrikulaerer Block, komplett, AV-Block dritten Grades, Herzblock AV komplett, Herzblock komplett, Atrioventrikulaerer Block 3ten Grades, AV BLOCK KOMPLETT, Atrioventrikulaerer Block 3. Grades, HERZBLOCK KOMPLETT, atrioventrikulaerer Block komplett |
| Portuguese | Bloqueio AV completo, Bloqueio AV do III grau, Bloqueio cardíaco completo, Bloqueio auriculoventricular do III grau, Bloqueio cardíaco do III grau, BLOQUEIO AV COMPLETO, BLOQUEIO COMPLETO DA COND CARDIAC, Bloqueio auriculoventricular completo |
| Spanish | Bloqueo cardiaco AV completo, Bloqueo AV de tercer grado, Bloqueo cardiaco completo, Bloqueo cardiaco AV de tercer grado, Bloqueo AV completo, Bloqueo auriculoventricular de tercer grado, Bloqueo cardiaco de tercer grado, BLOQUEO A-V COMPLETO, bloqueo auriculoventricular de tercer grado - RETIRADO -, bloqueo auriculoventricular de tercer grado - RETIRADO - (concepto no activo), bloqueo auriculoventricular completo (trastorno), bloqueo auriculoventricular completo, bloqueo auriculoventricular de tercer grado, bloqueo cardíaco completo, bloqueo cardíaco de tercer grado, Bloqueo auriculoventricular completo |
| Japanese | 完全心ブロック, ﾀﾞｲｻﾝﾄﾞｼﾝﾌﾞﾛｯｸ, 第三度ＡＶブロック, 第三度心ブロック, 完全房室ブロック, 第三度房室ブロック, ｶﾝｾﾞﾝﾎﾞｳｼﾂﾌﾞﾛｯｸ, ｶﾝｾﾞﾝｼﾝﾌﾞﾛｯｸ, ﾀﾞｲｻﾝﾄﾞAVﾌﾞﾛｯｸ, ﾀﾞｲｻﾝﾄﾞﾎﾞｳｼﾂﾌﾞﾛｯｸ, 完全ＡＶブロック, ｶﾝｾﾞﾝAVﾌﾞﾛｯｸ |
| Czech | Atrioventrikulární blokáda, kompletní, Srdeční AV blokáda třetího stupně, AV blok třetího stupně, Kompletní AV blokáda, Kompletní srdeční blok, Kompletní AV srdeční blokáda, Srdeční blokáda třetího stupně, Kompletní atrioventrikulární blokáda, AV blokáda třetího stupně, Kompletní srdeční blokáda, Atrioventrikulární blok třetího stupně |
| Korean | 완전 심방실 차단 |
| Hungarian | Teljes pitvar-kamrai block, Szívblock, harmadfokú, AV-block, teljes, Teljes szív-block, Harmadfokú AV block, AV-block, harmadfokú, Atrioventricularis block, harmadfokú, Komplett atrioventricularis block, Teljes szívblock, Teljes szívblock, AV, Teljes szívblock, AV, harmadfokú |
Ontology: Mobitz type II atrioventricular block (C0155700)
| Definition (NCI_CTCAE) | A disorder characterized by a dysrhythmia with relatively constant PR interval prior to the block of an atrial impulse. This is the result of intermittent failure of atrial electrical impulse conduction through the atrioventricular (AV) node to the ventricles. |
| Definition (NCI) | A disorder characterized by an electrocardiographic finding of intermittent failure of atrial electrical impulse conduction to the ventricles, characterized by a relatively constant PR interval prior to the block of an atrial impulse. (CDISC) |
| Concepts | Disease or Syndrome (T047) |
| ICD9 | 426.12 |
| SnomedCT | 28189009 |
| LNC | LA17088-8 |
| English | Mobitz (type) II atrioventricular block, Mobitz 2 2nd degree AV block, Mobitz type II A-V block, Second Degree Atrioventricular Block Mobitz Type II, AV Block Second Degree Mobitz Type II, Mobitz Type II Second Degree AV Block, Mobitz type II atrioventricular block (diagnosis), second degree A-V block, Mobitz type II, Mobitz type II atrioventricular block, Atrioven block-mobitz ii, mobitz ii, Type II second degree atrioventricular block, Mobitz II, Mobitz type II atrioventricular heart block, Second degree AV heart block, Type II Second Degree Atrioventricular Block, Type 2 2nd degree AV Block, Type 2 Second Degree AV Block, Type II Second Degree AV Block, AV block-2nd degree-type 2, Mobitz type II incomplete atrioventricular block, Second degree Mobitz type II incomplete atrioventricular block, Mobitz type 2 second degree atrioventricular block, Mobitz type II atrioventricular block (disorder), Incomplete atrioventricular block, second degree, Mobitz II, Incomplete atrioventricular block, second degree, Mobitz type II, Incomplete atrioventricular block, Mobitz II, Incomplete atrioventricular block, Mobitz type II, Mobitz II atrioventricular block |
| Dutch | type II tweedegraads atrioventriculair blok, Mobitz (type) II atrioventriculair blok |
| French | Bloc auriculoventriculaire (de type) Mobitz II, Bloc auriculo-ventriculaire du 2e degré type II |
| German | Mobitz (Typ) II atrioventrikulaerer Block, Typ II zweitgradiger atrioventrikulaerer Block |
| Italian | Blocco atrioventricolare di secondo grado, Mobitz II, Blocco atrioventricolare di secondo grado di tipo II |
| Portuguese | Bloqueio auriculoventricular de II grau tipo II, Bloqueio auriculoventricular de Mobitz tipo II |
| Spanish | Bloqueo auriculoventricular de segundo grado Tipo II, Bloqueo auriculoventricular de Mobitz (tipo) II, bloqueo auriculoventricular de Mobitz tipo II (trastorno), bloqueo auriculoventricular de Mobitz tipo II, bloqueo auriculoventricular incompleto de Mobitz tipo II, bloqueo auriculoventricular incompleto de segundo grado de Mobitz tipo II |
| Japanese | モービッツ２型房室ブロック, モービッツ２型第二度房室ブロック, ﾓｰﾋﾞｯﾂ2ｶﾞﾀﾎﾞｳｼﾂﾌﾞﾛｯｸ, ﾓｰﾋﾞｯﾂ2ｶﾞﾀﾀﾞｲﾆﾄﾞﾎﾞｳｼﾂﾌﾞﾛｯｸ |
| Czech | Atrioventrikulární blokáda druhého stupně typ II, Atrioventrikulární blokáda Mobitzova typu II |
| Hungarian | Mobitz II (típusú) atrioventricularis block, Másodfokú, II typusú fokú atrioventricularis block |
Ontology: Second degree atrioventricular block (C0264906)
| Definition (NCI) | Intermittent failure of atrial electrical impulse conduction to the ventricles. |
| Concepts | Disease or Syndrome (T047) |
| ICD10 | I44.1 |
| SnomedCT | 69886008, 195042002 |
| English | AV BLOCK SECOND DEGREE, Atrioventricular block, second degree, HEART BLOCK SECOND DEGREE, second degree atrioventricular block (diagnosis), A-V block second degree, second degree atrioventricular block, second degree A-V block, Second degree atrioventricular block, 2nd degree heart block, Atrioventricular block second degree, Heart block AV second degree, AV block second degree, Heart block second degree, second degree heart block, second degree av block, av block degree second, Second degree atrioventricular heart block, Second degree AV block, Second Degree AV Block, Second Degree Atrioventricular Block, AV Block Second Degree, Atrioventricular Block Second Degree, block; heart, second degree (atrioventricular), heart; block, second degree (atrioventricular), Incomplete atrioventricular block, second degree NOS, Second degree heart block, Second degree atrioventricular block (disorder) |
| Spanish | bloqueo auriculoventricular de segundo grado (trastorno), bloqueo auriculoventricular de segundo grado, bloqueo cardíaco de segundo grado, bloqueo atrioventricular incompleto, de segundo grado, Bloqueo cardiaco AV de segundo grado, Bloqueo cardiaco de segundo grado, Bloqueo cardiaco de 2º grado, Bloqueo AV de segundo grado, BLOQUEO A-V DE SEGUNDO GRADO, Second degree atrioventricular block, Bloqueo auriculoventricular de segundo grado |
| Italian | Blocco atrioventricolare di secondo grado, Blocco cardiaco atrio-ventricolare di secondo grado, Blocco ATRIO-VENTRICOLARE di secondo grado, Blocco cardiaco di secondo grado |
| Dutch | tweedegraads AV-blok, 2e graads hartblok, hartblok AV tweedegraads, hartblok tweedegraads, block; hart, tweede graad (atrioventriculair), hart; block, tweede graad (atrioventriculair), Tweedegraads atrioventriculair block, atrioventriculair blok tweedegraads |
| French | Bloc A-V du deuxième degré, Bloc cardiaque du 2e degré, Bloc AV du second degré, Bloc cardiaque du second degré, BLOC A.V. SECOND DEGRE, BLOC AV DEUXIEME DEGRE, Bloc auriculoventriculaire du deuxième degré |
| German | Herzblock AV zweiten Grades, Herzblock zweiten Grades, zweitgradiger Herzblock, AV-Block zweiten Grades, AV-BLOCK II. GRADES, Atrioventrikulaerer Block 2. Grades, HERZBLOCK 2. GRADES, atrioventrikulaerer Block zweiten Grades |
| Portuguese | Bloqueio cardíaco do II grau, Bloqueio AV do II grau, BLOQUEIO DA CONDUCAO CARD DO 2 G, Bloqueio auriculoventricular do II grau, BLOQUEIO AURICULO-VENTRICULAR DO |
| Japanese | 第二度房室ブロック, 第二度心ブロック, ﾀﾞｲﾆﾄﾞﾎﾞｳｼﾂﾌﾞﾛｯｸ, ﾀﾞｲﾆﾄﾞｼﾝﾌﾞﾛｯｸ, ﾀﾞｲﾆﾄﾞAVﾌﾞﾛｯｸ, 第二度ＡＶブロック |
| Czech | Druhý stupeň srdeční blokády, AV blokáda druhého stupně, Atrioventrikulární blokáda druhého stupně, Srdeční blok druhého stupně, AV blok druhého stupně |
| Korean | Ⅱ도 심방실 차단 |
| Hungarian | Szívblock, másodfokú, Másodfokú szívblock, Másodfokú atrioventricularis block, Másodfokú szívblock, AV, Másodfokú AV block |
Ontology: Mobitz type I incomplete atrioventricular block (C0264907)
| Definition (NCI) | A disorder characterized by an electrocardiographic finding of intermittent failure of atrial electrical impulse conduction to the ventricles, characterized by a progressively lengthening PR interval prior to the block of an atrial impulse. (CDISC) |
| Definition (NCI_CTCAE) | A disorder characterized by a dysrhythmia with a progressively lengthening PR interval prior to the blocking of an atrial impulse. This is the result of intermittent failure of atrial electrical impulse conduction through the atrioventricular (AV) node to the ventricles. |
| Concepts | Pathologic Function (T046) |
| ICD10 | I44.1 |
| SnomedCT | 54016002 |
| LNC | LA17087-0 |
| English | Mobitz 1 2nd degree AV block, Mobitz I (Wenckebach) A-V bloc, Wenckebach Block, Second Degree Atrioventricular Block Mobitz Type I, Mobitz Type I Second Degree AV Block, AV Block Second Degree Mobitz Type I, Mobitz type I atrioventricular block, Mobitz type I atrioventricular block (diagnosis), A-V block second degree: Mobitz type I, second degree A-V block, Mobitz type I, Mobitz type I incomplete atrioventricular block, Mobitz type I, Wenckebach phenomenon, Wenckebach, Wenckebach's block, wenckebach phenomenon, Block;Wenckebach, mobitz i, wenckebach, Mobitz I, Type 1 Second Degree AV Block, Type 1 2nd degree AV Block, Type 1 Second Degree Atrioventricular Block, AV block-2nd degree-type 1, Wenckebach's incomplete AV block, Wenckebach's phenomenon, Mobitz type 1 second degree atrioventricular block, Mobitz type I Wenckebach atrioventricular block, Mobitz type I incomplete atrioventricular block (disorder), block; Wenckebach, Wenckebach; block, Wenckebach; phenomenon, phenomenon; Wenckebach, Incomplete atrioventricular block, with 2:1 atrioventricular block, Incomplete atrioventricular block, with 2:1 atrioventricular response, Incomplete atrioventricular block, second degree, Mobitz I, Incomplete atrioventricular block, second degree, Mobitz type I, Incomplete atrioventricular block, Mobitz I, Incomplete atrioventricular block, Mobitz type I, Incomplete atrioventricular block, Wenckebach's, wenckebach block |
| Dutch | Wenckebach-fenomeen, Mobitz type I, Wenckebach, Wenckebach; block, Wenckebach; fenomeen, block; Wenckebach, fenomeen; Wenckebach |
| French | Phénomène de Wenckebach, Wenckebach, Mobitz type I |
| German | Wenckebach-Phaenomen, Mobitz Typ I, Wenckebach |
| Italian | Fenomeno di Wenckebach, Wenckebach, Tipo Mobitz 1 |
| Portuguese | Wenckebach, Mobitz tipo I, Fenómeno de Wenckebach |
| Spanish | Fenómeno de Wenckebach, Wenckebach, Mobitz tipo I, bloqueo AV incompleto de Wenckebach, bloqueo auriculoventricular incompleto de Mobitz tipo I (trastorno), bloqueo auriculoventricular incompleto de Mobitz tipo I, fenómeno de Wenckebach |
| Japanese | モービッツ１型, ﾓｰﾋﾞｯﾂ1ｶﾞﾀ, ウェンケバッハ, ｳｪﾝｹﾊﾞｯﾊ, ｳｪﾝｹﾊﾞｯﾊｹﾞﾝｼｮｳ, ウェンケバッハ現象 |
| Czech | Wenckebachův fenomen, Mobitz I, Wenckebach |
| Hungarian | Mobitz I típus, Wenckebach, Wenckebach-phenomen |
