Abstract

GARCIA, Maximiliano et al. Fragmented QRS complex: Usefulness as a predictor of cardiovascular risk and correlation with motility disorders and coronary anatomy. Insuf. card. [online]. 2013, vol.8, n.1, pp.2-8. ISSN 1852-3862.

Introduction. The fragmented QRS (fQRS) represents a ventricular conduction delay caused by a myocardial scar and may be associated with an increased risk of mortality and arrhythmics events. Objective. The fQRS correlate with regional motility disorders and their association with the outcome of coronary angiography and get fQRS clinical value to identify the population at risk in the course of an acute coronary syndrome (ACS). Materials and methods. It retrospectively evaluated patients admitted our institution with a diagnosis of ACS. Searched the electrocardiogram (ECG) the presence of fQRS and related it to the commitment of wall motion by echocardiography and coronary anatomy. Results. There were evaluated 116 patients, average age 64.6% years (75% male). The 78.2% corresponded to ACS without ST segment elevation, of which 36% had fQRS, like 68% that had ST elevation. Among the whole of patients, the 47.4% presented fQRS. In 72% of patients showed some kind of parietal motility disorders in echocardiogram (p< 0.03). The 28% of remaining cases had demonstrated the correlation between the wall with fQRS in the ECG and the hypokinetic or akinetic area by echocardiogram. The in-hospital global mortality was of 6.9%, of which 12.5% had fQRS. Among the patients with more than one vessel disease, 74.2% showed fQRS (p< 0.05) and 41% presented three vessels disease. Conclusions. The fQRS was associated significantly with the presence of more than one vessel disease and cardiogenic shock, but not with mortality. We found a huge association between the presence of regional contractility disorders and coronary anatomy, making possible the relationship between echocardiographic, hemodynamic and imaging data.

Keywords : Fragmented QRS complexL; Motility disorders; Coronary heart disease; Predictor of cardiovascular risk.

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