Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
The EKG in the Patient Treated with Lidocaine
Introduction
Electrocardiographic Findings
- Like all type 1B agents, this shortens the action potential duration
- May slow the rate or cause sinus arrest in high doses, the automaticity of ectopic atrial pacemakers may be reduced.
- 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.
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]