EKG class 12 - RU EKG-Class # 12 Preexcitation Syndromes...

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RU EKG-Class # 12 Preexcitation Syndromes and Miscellaneous Effects Presented by Carol J. Sadley, M. Ed., PA-C April 12, 2011
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Pre-excitation Syndromes Accessory AV conduction pathways Result in ―short circuits‖ or shortcuts from SA node to AV node Usually diagnosed on 12-lead EKG 2 types: Wolff-Parkinson-White Syndrome and Lown-Ganong-Levine Syndrome
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WPW and LGL: shortcuts in conduction
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Wolff-Parkinson-White Syndrome Accessory pathway via ―bundle of Kent‖ Appears as short PR interval (<.08) Presence of delta wave Predisposes to tachycardias (A-fib—VF) Treated with adenosine, if unstable cardiovert, then RFA definitively Can not accurately dx axis, MI, and LBBB
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Classic WPW findings on EKG
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WPW (here, look in V4-V6)
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Lown-Ganong-Levine Syndrome Accessory pathway via ―James bundle‖ Short PR interval No delta wave Beware rapid arrhythmias Treat as with WPW
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LGL – short PR, no delta wave
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Miscellaneous EKG Diagnoses Certain effects may be recognized by their characteristic appearance on EKG The EKG ―alerts us‖ to the diagnosis—it does NOT make the diagnosis It can act as another ―clue‖ in making a diagnosis
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Athlete’s Heart Sinus bradycardia First degree AV Block LVH (RVH less common, but possible) Nonspecific ST-T wave changes (such as early repolarization/ST elevation) All findings are normal in the absence of underlying cardiac disease
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This EKG is taken from a 23 y/o male athlete. It shows signs of early repolarization as evidenced by mild ST elevation in many leads.
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Athlete’s Heart : note the bradycardia (rate: just < 60)
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This note was uploaded on 02/12/2012 for the course PSYCHOLOGY 101 taught by Professor Michaelleyton during the Spring '08 term at Rutgers.

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EKG class 12 - RU EKG-Class # 12 Preexcitation Syndromes...

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