A sinus morphology is an upright P wave in lead II and biphasic (up and down) P wave in lead V1. The first ECG strip below shows a P wave with sinus morphology, thus normal sinus rhythm.

The heart rate is regular and classically does not exceed 220 beats per minute minus the patient's age. 2 In sinus tachycardia, P waves precede the QRS complex.

The P waves are positive in leads I, II, aVF, and V4-V6, This is a sinus tachycardia. The pauses in the rhythm are the result of a nonconducted P wave (↓) that does not result in a pacemaker ...

An electrocardiogram shows a regular tachycardia with a narrow QRS complex and no apparent P waves. ... incision is usually caused by an intraatrial reentry. 5 Sinus-node reentrant tachycardia, ...

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 ...

TIP Regular p waves indicate the rhythm is sinus. However, every other p wave is not followed by a QRS compelx indicating a high degree heart block – in this case 2:1 block (2 nd degree Mobitz type 2) ...

The diagnosis is sinus tachycardia, short PR interval (enhanced AV conduction), and Duchenne muscular dystrophy. The rhythm is regular at a rate of 100 beats/min. A P wave occurs before each QRS ...

"Careful recognition of a concealed sinus P wave in ventricular tachycardia may be attributed to differential diagnosis." Immediate placement of an implantable cardioverter defibrillator is not ...