MORPHOLOGICAL ANALISYS OF VENTRICULAR PREMATURE BEATS (VENTRICULAR EXTRASYSTOLES) DURING ECG HOLTER MONITORING
Background / Aims: Ventricular extrasystoles are a part of rhythm disturbances with different mechanism of occurrence, their prevalence increases with age, but is also most frequent to males, to black population and those who have organic heart disease, and if there are catecholamine excess, hyperkalaemia, hipomagnesemie.
Although sporadics, sometimes felt as palpitations and even nerespondive to treatment, ventricular extrasystoles can have no significance when they appear on healthy heart, but is a concern when their appeareance is on a pathologic heart and makes a different prognosis because their primary diseases ( valvular disease, cardiomiopathy, myocarditis, etc).
Methods: We used as study group of 580 ECG tracks, resulted by 24 hour Holter monitoring, on patients with different pathologies, during 3 years (1.01.2010 – 28.02.2013).
We set, on this study , to analyses the frequeces, the morphology, the type and the incidence of ventricular extrasystoles in this group of patients and one of the main objective is to analyze the artefacts which caused a false interpretation as ventricular extrasystoles.
Results: The morphology of ventricular extrasystoles is varied, being connected, first by the position of the heart, but also by the myocardial position of the extrasystolic generator, (ectopic focus). Electrical axis of ventricular extrasystoles is variable, depending on the ventricular level where is located the extrasystolic point.
Conclusion: The relation with T wave is an important parameter to appreciate the severity (malignancy) of ventricular extrasystoles. If the ECG track show us sistematyzed ventricular extrasystoles (especially bigeminy ventricular extrasystoles) , will not exclude the possibility of a parasistoly.