Supraventricular Rhythms: Difference between revisions

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Supraventricular Rhythms (view source)

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[[Image:conduction_system_en.png|thumb]]
{{authors|
Supraventricular Rhythms originate from the atria. Examples of supraventricular rhythms are:
|mainauthor= [[user:Drj|J.S.S.G. de Jong]]
*[[Atrial Premature Complexes]]
|moderator= [[user:Drj|J.S.S.G. de jong]]
*[[Sinustachycardia]]
|supervisor=
*[[Atrial Flutter]]
}}
*[[Atrial Fibrillation]]
===Supraventricular tachycardias===
*[[Atrial Tachycardia]]
{| class="wikitable" border="1" width="610px"
*[[AVNRT]]
|-
*[[AVRT|Atrio-ventricular Reentry Tachycardia AVRT]]
| [[Image:atrial_ventricular.png|300px]]
*[[AVJT|AV junctional tachycardia]]
| [[image:SVT_overview.svg|300px]]
 
| [[Image:Svt_algorythm_en.png|300px]]
|-
!Arrhythmias are categorized into supraventricular and ventricular depending on their origin (below the bifurcation of the His bundle is ventricular)
!An overview of pathological supraventricular arrhythmias and their origin
!Algorithm to diagnose SVTs<cite>ACC</cite>
|}
{| class="wikitable" font-size="90%"
{| class="wikitable" font-size="90%"
|- style="text-align:center;background-color:#6EB4EB;"
|- style="text-align:center;background-color:#6EB4EB;"
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|-
|-
!
!
!regularity
!Example (lead II)
!atrial frequency
!Regularity
!ventricular frequency
!Atrial frequency
!origin (SVT/VT)
!Ventricular frequency
!p-wave
!Origin (SVT/VT)
!effect of adenosine
!P-wave
![[Effect of adenosine]]
|-  
|-  
| colspan="8" style="text-align:left;background-color:#cfefcf;" | '''Narrow complex (QRS<0.12)'''
| colspan="8" style="text-align:left;background-color:#cfefcf;" | '''Narrow complex (QRS<0.12)'''
|-
|-
! [[#sinustachycardia|sinustachycardia]]
! [[Sinustachycardia]]
| [[Image:sinustachy_small.svg|200px|Sinustachycardia - a normal p wave precedes every QRS complex]]
| regular
| regular
| 100-180 bpm
| 100-180 bpm
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| gradual slowing
| gradual slowing
|-
|-
! [[#atrial fibrillation|atrial fibrillation]]
! [[Atrial Fibrillation]]
| [[Image:afib_small.svg|200px|Atrial fibrillation - irregular rate, no p waves]]
| grossly irregular
| grossly irregular
| 400-600 bpm  
| 400-600 bpm  
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| slows down rate; irregularity remains
| slows down rate; irregularity remains
|-
|-
! [[#atrial flutter|atrial flutter]]
! [[Atrial Flutter]]
| [[Image:aflutt_small.svg|200px|Atrial flutter - sawtooth in lead II with 2:1 block]]
| regular (sometimes alternating block)  
| regular (sometimes alternating block)  
| 250-350 bpm  
| 250-350 bpm  
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| temporary reduced conduction (e.g. 4:1)
| temporary reduced conduction (e.g. 4:1)
|-
|-
! [[#AVNRT|AVNRT]]  
! [[AVNRT]]
| [[Image:avnrt_small.svg|200px|ANVRT - rSR' in lead V1]]
| regular  
| regular  
| 180-250 bpm
| 180-250 bpm
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| stops
| stops
|-
|-
! [[#Atrial Tachycardia|Atrial tachycardia]]
! [[Atrial Tachycardia]]
| [[Image:atrialtachy_small.svg|200px|Atrial tachycardia - like sinustachycardia but the p wave has a different morphology]]
| regular
| regular
| 120-250 bpm  
| 120-250 bpm  
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| temporary AV-block
| temporary AV-block
|-
|-
! [[#Atrio-Ventricular Reentry Tachycardia AVRT|AVRT - orthodromic]]
! [[AVRT|Atrio-Ventricular Reentry Tachycardia (AVRT)- orthodromic]]
| [[Image:avrt_small.svg|200px|AVRT - inverted p wave behind every QRS complex]]
| regular  
| regular  
| 150-250 bpm
| 150-250 bpm
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| stops
| stops
|-
|-
! [[#AV junctional tachycardia|AV junctional tachycardia]]
! [[AVJT|AV junctional tachycardia]]
| [[Image:avnodal_small.svg|200px|AV junctional tachycardia - no or inverted p-waves within QRS complex]]
| regular  
| regular  
| 60-100 bpm
| 60-100 bpm
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| colspan="8" style="text-align:left;background-color:#cfefcf;" | '''Wide complex (QRS>0.12)'''
| colspan="8" style="text-align:left;background-color:#cfefcf;" | '''Wide complex (QRS>0.12)'''
|-
|-
! [[#Supraventricular tachycardia with block|Supraventricular tachycardia with block]]
! [[Supraventricular tachycardia with block]]
| [[Image:atrial_tachy_with_LBBB_leadII.svg|200px|SVT with block - any SVT combined with LBBB or RBBB]]
| (ir)regular depending on SVT
| (ir)regular depending on SVT
| 150-250 bpm
| 100-250 bpm
| 75-200 bpm
| 75-200 bpm
| atria (SVT)
| atria (SVT)
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| temporary increased AV-block (eg 4:1)
| temporary increased AV-block (eg 4:1)
|-
|-
! [[#Atrio-ventricular Reentry Tachycardia AVRT|AVRT - antidrome]]
! [[AVRT|Atrio-ventricular Reentry Tachycardia (AVRT) - antidrome]]
|
| regular  
| regular  
| 150-250 bpm
| 150-250 bpm
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|-
|-
|}
|}
{{Box|
===Supraventricular [[Ectopic Beats|ectopic beats]]===
*[[Atrial Premature Complexes]]
*[[Wandering Pacemaker]]
*[[AV-nodal complexes]]
}}
{{Box|
===Also read===
*[[Introduction to Arrhythmias]]
*[[Mechanisms of Arrhythmias]]
*[[Sinus node rhythms and arrhythmias]]
*[[Junctional Tachycardias]]
*[[Ventricular Arrhythmias]]
}}
{{Box|
==References==
<biblio>
#ACC pmid=14563598
</biblio>
}}
[[Category:ECG Textbook]]
Retrieved from "https://en.ecgpedia.org/index.php?title=Special:MobileDiff/2807...12226"

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