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10 Cards in this Set
- Front
- Back
What is peculiar about this and what does it imply?
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All postive concordance or all negative across precordial leads suggests VT
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Fusion beat - suggests VT
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Capture beats - suggests VT
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Rabbit ears
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RSR’ complexes with a taller left rabbit ear. This is the most specific finding in favour of VT
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Morphology
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If not typical of RBBB or LBBB, likely VT
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Axis
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Extreme axis deviation ("Northwest") likely VT
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Definition of sustained vs. non-sustained VT
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Greater than or less than 30 sec
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Duration
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>0.14 sec likely VT
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Brugada criteria
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If any are true, dx VT: 1) absence of RS complex in any precordial leads (100% specific for VT)
2) if RS present, at least one RS interval (start of R wave to deepest part of S wave) > 0.1 sec 3) A-V dissociation 4) Morphology criteria for VT in V1 and V6 both |
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Other important considerations in VT
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TCA OD, hyperkalemia, Dig toxicity
Each has it's own unique tx that must be applied for VT to resolve |
