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Related to premature ventricular contraction: premature atrial contraction

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References in periodicals archive ?
7, when the normal signal and the premature ventricular contraction signal are compared, it can be seen that the R-R distance is shorter and the Q-R amplitude is larger and the R-S amplitude is smaller than that of premature ventricular contraction signal.
Cardiomyopathy induced by frequent premature ventricular contractions. Arch Pediatr.
Furthermore, in patients with MS, outflow tract premature ventricular contractions might be due to a sympathetic over activity state, which may be the inciting mechanism [61].
The patients were grouped according to the number of premature ventricular contractions and presence of complex ventricular arhythmia in the 24-hour rhythm Holter monitor test.
There are three clinical forms of OTVA manifestation: 1) paroxysmal sustained monomorphic ventricular tachycardia, 2) repetitive nonsustained ventricular tachycardia or 3) premature ventricular contractions (PVCs).
The study, published in the Journal of the American Heart Association, found no significant associations between the intake of coffee, tea or chocolate (which contains varying amounts of caffeine) and the hourly rate of premature atrial contractions or premature ventricular contractions. There was also no association with the prevalence of supraventricular tachycardia, an episode in which the heart beats more than 100 times per minute--sometimes as fast as 300 times per minute.
I'm having a common, yet annoying problem: PVCs or premature ventricular contractions. I've had them on and off for a while, but now every time I push to my limit when exercising or double my espresso, they come back.
Then, the ECGs were reviewed visually to identify anomalies such as missed beats, premature beats, and changes in wave form, as for example the prolonged QRS complex typical of premature ventricular contractions (see figure 1).
I was recently diagnosed with premature ventricular contractions (PVCs) but tests show my heart is healthy.
Using 24-hr beat-to-beat electrocardiographic data obtained using a high-resolution Holter system, the researchers sumarized the total number of premature ventricular contractions (PVCs) and premature atrial contractions for each 30-min segment.