Normal Sinus Rhythm

Posted by e-Medical PPT Tuesday, June 1, 2010
Sinus rhythm is characterized by a usual rate of anywhere between 60-100 bpm. Every QRS complex is preceded by a P wave. The P wave morphology and axis must be normal and the PR interval will usually be 120 ms to 200 ms. In normal sinus rhythm, electrical impulses from the SA node travel to the AV node with successful contraction of the two atria. The electrical impulses from the AV node successfully contract the ventricles. On the ECG, there are normal PQRST elements with no evidence of arrhythmia, tachycardia, or bradycardia.

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