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 ...

To understand the difference between normal sinus rhythm and sinus arrhythmia, it's best to start by exploring the role of an ...

Sinus bradycardia occurs on an ECG when there is a normal upright P wave in lead II ― sinus P wave ― preceding every QRS complex with a ventricular rate of less than 60 beats per minute.

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 ...

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 ...

They are characterized by premature, wider-than-normal, bizarre QRS ... otherwise, sinus depolarization would suppress it 2,3. Figure 2: An ECG obtained from a beagle dog 21 days later, showing ...