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AV Conduction: Difference between revisions
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→Third degree AV block
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[[Image:Rhythm_3rdAVblock.png|thumb| 3rd degree AV block. AV dissociation is present: there is no relation between p-waves and the (nodal) QRS complexes.]] | [[Image:Rhythm_3rdAVblock.png|thumb| 3rd degree AV block. AV dissociation is present: there is no relation between p-waves and the (nodal) QRS complexes.]] | ||
[[Image:Rhythm_totalAVblock.png|thumb| Short lasting total AV block (initiated by adenosine infusion). P-waves are present, but no QRS complexes follow]] | [[Image:Rhythm_totalAVblock.png|thumb| Short lasting total AV block (initiated by adenosine infusion). P-waves are present, but no QRS complexes follow]] | ||
Third degree AV block is synonymous to ''total block'': absence of atrioventricular conduction. P-waves and QRS complexes have no temporal relationship. | Third degree AV block is synonymous to ''total block'': absence of atrioventricular conduction. The P-waves and QRS complexes have no temporal relationship, which is called to [[AV dissociation]]. | ||
The ventricular rhythm can [[#Nodal Rhythm|nodal]], [[#Idioventricular|idioventricular]] or absent. Absent ventricular rhythm results in asystole and death. | The ventricular rhythm can [[#Nodal Rhythm|nodal]], [[#Idioventricular|idioventricular]] or absent. Absent ventricular rhythm results in asystole and death. | ||
During third degree AV block the blood supply to the brain can insufficient, leading to loss of consciousness. [[w:Stokes-Adams_Attack|Adams Stokes (or Stokes-Adams) attacks]] (often misspelled as Adam Stokes) attacks arte attacks of syncope or pre-syncope in the setting of third degree AV block. | During third degree AV block the blood supply to the brain can insufficient, leading to loss of consciousness. [[w:Stokes-Adams_Attack|Adams Stokes (or Stokes-Adams) attacks]] (often misspelled as Adam Stokes) attacks arte attacks of syncope or pre-syncope in the setting of third degree AV block. | ||
{{clr}} | {{clr}} | ||