To understand the difference between normal sinus rhythm and sinus arrhythmia, it's best to start by exploring the role of an electrocardiogram (ECG or EKG) in diagnosing such rhythms. During an ...

Sinus rhythm (a.k.a. normal sinus rhythm) refers to the normal heart beat originating from the sinoatrial node. This is manifested as an upright P wave in lead II of the ECG. Sinus bradycardia ...

Sinus tachycardia is recognized on an ECG with a normal upright P wave in lead II preceding every QRS complex. This indicates that the pacemaker is coming from the sinus node and not elsewhere in ...

The ECG findings presented as normal in athletes were ... 6,11 Heart rates ≥30 beats/min are considered normal in highly trained athletes. Sinus arrhythmia is also common, particularly in younger ...

A 12-lead ECG is obtained. Figure 1 ... The P wave is positive in leads I, II, aVF, and V4-V6. This is a normal sinus rhythm. The QRS complex duration (0.08 sec) and morphology are normal.

The goal of ECG interpretation in athletes is to classify the ECG as: (1) ‘normal’—no further evaluation needed ... early repolarisation, sinus bradycardia, sinus arrhythmia and 1° atrioventricular ...