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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
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.
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.
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.
Learn how to measure heart rate, PR interval, QRS duration, QT interval, and frontal plane axis in the 12 lead ECG. See examples of normal sinus rhythm, P wave, ST segment, T wave, and U wave in the ECG waveform.
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.
10 Νοε 2022 · This article is a guide for interpreting abnormal Normal Sinus Rhythm EKGs, including qualifying criteria and a sample EKG rhythnm strip. Normal sinus rhythm is indicated by a heart rate in the normal range of 60-100 beats per minute with a steady rate, aside from variations due to respiration.
