premature beat

Dr. Goodman looked up at the monitor as the premature beats began to increase in frequency.

However, under some circumstances they can depolarize and originate an atrial or ventricular premature beat.

Typically these individuals will have premature beats at rest which disappear at higher SAN frequencies.

In these patients, it was shown for the very first time that cardiac arrhythmias could be initiated and terminated by critically timed premature beats.

Physical examination The physical examination is often unremarkable, although an arrhythmia characterized by premature beats may be detected.

Since the premature beat initiates outside the sinoatrial node, the associated P wave appears different from those seen in normal sinus rhythm.

The damage interferes with the electrical activity that normally keeps the heart pumping regularly, causing premature beats, usually felt as heart palpitations.

Georg Schmidt, "Heart-rate turbulence after ventricular premature beats as a predictor of mortality after acute myocardial infarction.

The premature beats were increasing to the point that normal beats were being crowded out as the electronic blip on the monitor began to trace a senseless pattern.

This may cause a single premature beat now and then, or, if the ectopic focus fires more often than the sinoatrial node, it can produce a sustained abnormal rhythm.

Indications for Class Ia agents are supraventricular tachycardia, ventricular tachycardia, symptomatic ventricular premature beats, and prevention of ventricular fibrillation.

The other rare E.C.G. changes include deformity of QRS complexes, prolongation of PR interval, atrial premature beats, and atrial tachycardia.

Ventricular tachycardia, which describes a heart rate of over 100 beats per minute with at least three irregular heartbeats as a sequence of consecutive premature beats, can degenerate into ventricular fibrillation, which requires DC cardioversion.

However, the apical murmur of the Gallavardin phenomenon does not radiate to the left axilla and is accentuated by a slowing of the heart rate (such as a compensatory pause after a premature beat) whereas the mitral regurgitation murmur does not change.

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