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Sinus Node Rhythms and Arrhythmias: Difference between revisions
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*A [[P wave morphology]] P wave (atrial contraction) precedes every QRS complex | *A [[P wave morphology]] P wave (atrial contraction) precedes every QRS complex | ||
*The rhythm is regular, but varies slightly while breathing | *The rhythm is regular, but varies slightly while breathing | ||
*The | *The rate ranges between 60 and 100 beats per minute | ||
*The P waves maximum height is 2.5 mm in II and/or III | *The P waves maximum height is 2.5 mm in II and/or III | ||
*The P wave is positive in I and II, and biphasic in V1 | *The P wave is positive in I and II, and biphasic in V1 | ||