Download - A 14 year old with SVT
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A 14 year old with SVT
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Baseline EP study• AH 60, HV 57, no preexcitation• Antegrade
• WCL 420• Decremental with AH jump at 600/390 + echos• Block with adenosine
• Retrograde• WCL 430• Decremental with VA jump at 600/420 + echos• Block with adenosine
• On isoproterenol, SVT #1 induced…
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SVT #1
• All consistent with typical AVNRT• RF slow pathway modification…
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Slow pathway area
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AH 60 AH 50CS pacing 400 SVT 400
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Spontaneous
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340 340 340 340 340
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Spontaneous
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SVT #2
• Diagnosis? Next steps?• Attempt at 3D mapping for adjunctive clues…
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Right posteroseptal
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Slo
w p
ath
way
are
a
Inef
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ive
site
s ~
-60
ms
Ineffectiv
e sites
Slo
w p
ath
way
are
a
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Thank you!
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SVT #2 alone