Abstract：Objective To explore the clinical value of fragmented QRS complex (fQRS) in patients with dilated cardiomyopathy(DCM).Methods Retrospectively analyse 112 patients suitable for DCM diagnostic criteria. According to the existence of fQRS complex in 12 lead ECG and duration of QRS complex, divide them into fQRS group, wideQRS (wQRS) group and non fragmentedQRS (nonfQRS) group, and then compare the incidence rate of fQRS between DCM patients and the control group. In addition, the incidence rates of the decrease of left ventricular ejection fraction(LVEF) and ventricular arrhythmia and cardiogenic shock and cardiac death of patients with fQRS, wQRS and nonfQRS were also compared.Results TThe incidence rate of fQRS in the observation group was significantly higher than that of control group(P<0.01). Among the observation group, the incidence rates of fQRS and wQRS were noticeably higher than that of nonfQRS group(P<0.05). In aspects of the incidence rates of the decrease of LVEF and ventricular arrhythmia and cardiac death, those two groups were also higher than nonfQRS group(P<0.05).ConclusionBesides other evidences to diagnose DCM, fQRS could serve as a new indicator for the diagnosis of DCM, which can also be considered as one of the early indicators for DCM high risk population.
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2013, Vol. 22 
