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8 Οκτ 2024 · Overview of normal sinus rhythm (NSR) The default heart rhythm; Pacemaking impulses arise from the sino-atrial node and are transmitted to the ventricles via the AV-node and His-Purkinje system; This results in a regular, narrow-complex heart rhythm at 60-100 bpm
- Sinus Arrhythmia
Sinus Arrhythmia Overview. Sinus rhythm with a beat-to-beat...
- Sinus Tachycardia
Causes. Sinus tachycardia is usually a secondary condition....
- Sinus Arrhythmia
Definition (criteria) for sinus rhythm. Regular rhythm with ventricular rate between 50 and 100 beats/min. P-wave with constant morphology preceding every QRS complex. The P-wave is positive in lead II. Figure 1 (below) shows normal sinus rhythm at paper speed 25 mm/s.
If the rhythm is sinus rhythm (i.e. under normal circumstances) the P-wave vector is directed downwards and to the left in the frontal plane and this yields a positive P-wave in lead II (Figure 2, right-hand side). The P-wave is always positive in lead II during sinus rhythm.
5 Μαΐ 2022 · When an EKG tracing meets these criteria —sinus-originating, fixed P-QRS-T repeating pattern, and HR between 60 and 99— it can be called Normal Sinus Rhythm. Normal Sinus Rhythm means: An EKG rhythm starting at the SA Node with a rate between 60 and 99 which follows the expected electrical path through the heart.
Sinus rhythm (which is the normal rhythm) has the following characteristics: (1) heart rate 50–100 beats per minute; (2) P-wave precedes every QRS complex; (3) the P-wave is positive in lead II and (4) the PR interval is constant.
8 Νοε 2021 · A normal sinus rhythm refers to both a normal heart rate and rhythm. Normal heart rates are from 60 to 100 beats per minute. The shape of the electrocardiogram (EKG) tracing will exhibit certain key attributes to be considered normal, as discussed below.
A regular heart rhythm originating from the sinoatrial node, characterized by a rate of 60-100 beats per minute, upright P waves before each QRS complex, and a consistent PR interval.
