Archives

Wide QRS complexes arriving early without preceding P waves are likely premature ventricular complexes (PVC). When the PVC comes in pairs, they are called ventricular Read More

The depolarization of the myocardium is represented on an ECG by a series of waveforms, one for atrial depolarization and soon after a larger waveform Read More

In the absence of nodal activity, sinus node or AV node, the ventricles can serve as a backup pacemaker at the much reduced rate of Read More

A chaotic unorganized cardiac rhythm with several firing regions within the ventricles; the result is uncoordinated ventricular activity and NO cardiac output – a lethal Read More

Ventricular hypertrophy is reflected in QRS axis deviation towards the hypertrophied ventricle, increased amplitude in the QRS complex, altered R wave progression, and possibly signs Read More

The T wave is a graphic representation of the repolarization of the ventricle. The T wave is typically about 0.10 to 0.25 seconds wide with Read More

A cardiac rhythm with the impulse originating in the ventricles and an absence of atrial activity (no P waves); heart rate is 20-40/minute; cardiac output Read More

Ventricular standstill identifies a rhythm with P waves but without QRS complexes. Blood flow ceases. A third degree AV block can precede ventricular standstill, with Read More

With severe ventricular hypertrophy, the myocardium can thicken to such a degree that the blood supply to the subendocardium (inner lining of the heart just Read More

Is a cardiac rhythm characterized by rapidly occurring wide QRS complexes with absent or infrequent P waves evident; the absence of atrial kick, the lack Read More