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.

Studies investigating QRS-complex ... than sinus tachycardia were documented in both experimental and observational studies (most commonly nonsustained SVT, atrial fibrillation and sinus bradycardia).

slightly before the QRS complex or slightly after the QRS complex. The morphology of the P wave will not be similar to the sinus P wave, which is normally upright in lead II and biphasic in lead V1.

Conduction intervals were normal, with baseline sinus cycle ... the following EKG was recorded (Fig. 1). What is the mechanism for the progressive widening of QRS complexes and for the normal ...

The ability to identify an abnormality on the 12-lead ECG ... P wave or sinus rate which is slowed in athletes due to increased vagal tone (figure 4). The QRS rate for junctional rhythms is typically ...

ECG interpretation in athletes requires ... training-related findings in athletes such as high QRS amplitude meeting voltage criteria for left ventricular hypertrophy, early repolarisation, sinus ...

An electrocardiogram (ECG) reveals a regular narrow-complex ... P waves immediately precede the QRS complex in sinus tachycardia, atrial tachycardia, multifocal atrial tachycardia, and multiple ...

Electrocardiographic (ECG) evaluation shows atrial fibrillation, normal QRS complexes ... underlying sinus-node disease may lead to symptomatic bradycardia after conversion to sinus rhythm.

This is the final article in a three-part series on use of an electrocardiogram (ECG), a non ... patient back into sinus rhythm. This is a broad complex tachycardia originating in the ventricles with ...