The EKG in the patient treated with adenosine

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

1. Decreases the automaticity of the sinus node and AV nodal conduction
2. Caused by an increase in the AH interval and not by an increase in the HV interval
3. Blocks occur within 20 seconds of i.v. administration
4. The incidence of transient second degree AV block is high

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