Sinus rhythm (a.k.a. normal sinus rhythm ... Note that ectopic atrial rhythms can have a P wave before each QRS complex, however the P wave is not upright in lead II since it originates in ...

Like normal sinus rhythm, the heart rate is still (usually ... P waves will be present and have the same shape throughout. A QRS complex will follow each P wave. The P-R intervals will be between ...

If there is a P wave before every QRS complex, and it has a sinus morphology, then normal sinus rhythm, or NSR, is said to be present. A sinus morphology is an upright P wave in lead II and ...

This document will assist physicians in identifying normal ECG patterns commonly found in ... and the QRS complex usually narrow unless the baseline QRS has a bundle branch block. Sinus rhythm resumes ...

Sinus rhythm, EF less than or equal to 35%, NYHA functional class III/IV and QRS duration of 120 ms or greater: IA recommendation in the German guideline only with QRS greater than 150 ms and left ...

They are characterized by premature, wider-than-normal ... sinus depolarization would suppress it 2,3. Figure 2: An ECG obtained from a beagle dog 21 days later, showing six rhythm strips ...