The EKG in the patient treated with lidocaine

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

1. Like all type 1B agents, this shortens the action potential duration
2. May slow the rate or cause sinus arrest in high doses, the automaticity of ectopic atrial pacemakers may be reduced.
3. In usual doses, it is not associated with any noticeable changes in the P wave, the PR interval, the QRS complex, The QT interval, or the T wave.

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