Sinus Node Rhythms and Arrhythmias: Difference between revisions

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===The properties of normal sinus rhythm (see also [[Basics]]):===
===The properties of normal sinus rhythm (see also [[Basics]]):===
[[Image:QRSverklaring.jpg|thumb| During a normal sinus rhythm, after every atrial contraction (P-top) follows a ventricular contraction (QRS complex).]]
[[Image:QRSverklaring.jpg|thumb| During normal sinus rhythm, every atrial contraction (P-wave) is followed by a ventricular contraction (QRS complex).]]
[[Image:normalSR.jpg|thumb|Normal sinus rhythm with a positive P-top in I, II and AVF, and a biphasic P-top in V1.]]
[[Image:normalSR.jpg|thumb|Normal sinus rhythm with a positive P-wave in I, II and AVF, and a biphasic P-wave in V1.]]
*A P-top (atrial contraction) ''gaat vooraf aan'' the QRS complex
*A P-wave (atrial contraction) precedes the QRS complex
*Every P follows a QRS complex
*Every P is followed by a QRS complex
*The rhythm is regular, but varies slightly while breathing
*The rhythm is regular, but varies slightly while breathing
*The frequency is between 60 and 100 beats per minute
*The frequency ranges between 60 and 100 beats per minute
*The P-top's maximum height is 2.5mm in II and/or III
*The P-waves maximum height is 2.5mm in II and/or III
*The P-top is positive in I and II, and biphasic in V1
*The P-wave is positive in I and II, and biphasic in V1




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