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Supraventricular Rhythms: Difference between revisions
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===An overview of supraventricular | ===Supraventricular tachycardias=== | ||
{| class="wikitable" border="1" width="610px" | |||
|- | |||
| [[Image:atrial_ventricular.png|300px]] | |||
| [[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;" | ||
| Line 10: | Line 20: | ||
|- | |- | ||
! | ! | ||
! | !Example (lead II) | ||
! | !Regularity | ||
! | !Atrial frequency | ||
! | !Ventricular frequency | ||
! | !Origin (SVT/VT) | ||
! | !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]] | ||
| [[Image:sinustachy_small.svg|200px]] | | [[Image:sinustachy_small.svg|200px|Sinustachycardia - a normal p wave precedes every QRS complex]] | ||
| regular | | regular | ||
| 100-180 bpm | | 100-180 bpm | ||
| Line 30: | Line 40: | ||
|- | |- | ||
! [[Atrial Fibrillation]] | ! [[Atrial Fibrillation]] | ||
| [[Image:afib_small.svg|200px]] | | [[Image:afib_small.svg|200px|Atrial fibrillation - irregular rate, no p waves]] | ||
| grossly irregular | | grossly irregular | ||
| 400-600 bpm | | 400-600 bpm | ||
| Line 39: | Line 49: | ||
|- | |- | ||
! [[Atrial Flutter]] | ! [[Atrial Flutter]] | ||
| [[Image:aflutt_small.svg|200px]] | | [[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 | ||
| Line 48: | Line 58: | ||
|- | |- | ||
! [[AVNRT]] | ! [[AVNRT]] | ||
| [[Image:avnrt_small.svg|200px]] | | [[Image:avnrt_small.svg|200px|ANVRT - rSR' in lead V1]] | ||
| regular | | regular | ||
| 180-250 bpm | | 180-250 bpm | ||
| Line 57: | Line 67: | ||
|- | |- | ||
! [[Atrial Tachycardia]] | ! [[Atrial Tachycardia]] | ||
| [[Image:atrialtachy_small.svg|200px]] | | [[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 | ||
| Line 66: | Line 76: | ||
|- | |- | ||
! [[AVRT|Atrio-Ventricular Reentry Tachycardia (AVRT)- orthodromic]] | ! [[AVRT|Atrio-Ventricular Reentry Tachycardia (AVRT)- orthodromic]] | ||
| [[Image:avrt_small.svg|200px]] | | [[Image:avrt_small.svg|200px|AVRT - inverted p wave behind every QRS complex]] | ||
| regular | | regular | ||
| 150-250 bpm | | 150-250 bpm | ||
| Line 75: | Line 85: | ||
|- | |- | ||
! [[AVJT|AV junctional tachycardia]] | ! [[AVJT|AV junctional tachycardia]] | ||
| [[Image:avnodal_small.svg|200px]] | | [[Image:avnodal_small.svg|200px|AV junctional tachycardia - no or inverted p-waves within QRS complex]] | ||
| regular | | regular | ||
| 60-100 bpm | | 60-100 bpm | ||
| Line 86: | Line 96: | ||
|- | |- | ||
! [[Supraventricular tachycardia with block]] | ! [[Supraventricular tachycardia with block]] | ||
| [[Image:atrial_tachy_with_LBBB_leadII.svg|200px]] | | [[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 | ||
| | | 100-250 bpm | ||
| 75-200 bpm | | 75-200 bpm | ||
| atria (SVT) | | atria (SVT) | ||
| Line 105: | Line 115: | ||
|} | |} | ||
{{Box| | |||
===Supraventricular [[Ectopic Beats|ectopic beats]]=== | ===Supraventricular [[Ectopic Beats|ectopic beats]]=== | ||
*[[Atrial Premature Complexes]] | *[[Atrial Premature Complexes]] | ||
*[[Wandering Pacemaker]] | *[[Wandering Pacemaker]] | ||
*[[AV-nodal complexes]] | *[[AV-nodal complexes]] | ||
}} | |||
===Also read | {{Box| | ||
===Also read=== | |||
*[[Introduction to Arrhythmias]] | *[[Introduction to Arrhythmias]] | ||
*[[Mechanisms of Arrhythmias]] | *[[Mechanisms of Arrhythmias]] | ||
| Line 117: | Line 128: | ||
*[[Junctional Tachycardias]] | *[[Junctional Tachycardias]] | ||
*[[Ventricular Arrhythmias]] | *[[Ventricular Arrhythmias]] | ||
}} | |||
{{Box| | |||
==References== | ==References== | ||
<biblio> | <biblio> | ||
# | #ACC pmid=14563598 | ||
</biblio> | </biblio> | ||
}} | |||
[[Category:ECG Textbook]] | |||