![]() We have found that IVCD is an important ECG predictor of prognosis in patients with CHF. Further analysis of IVCD and QTc showed that, for different cut-off values, IVCD is better than QTc, and that there is a graded increase in mortality with increasing value of IVCD. The addition of plasma sodium, age and NYHA class had no added benefit on the predictive power of the model. ![]() A model based on multivariate analysis showed that IVCD, MVO2 and left ventricular ejection fraction (LVEF) were the best predictors of mortality. On bivariate analysis, IVCD and MVO2 were better predictors when combined together. On univariate analysis by the Cox proportional Hazard method, intraventricular conduction delay (IVCD) and QTc were identified as predictors of mortality. Cardiopulmonary exercise testing and radionuclide ventriculogram were also performed where possible. Dyssynchrony results in widening of the QRS complex on the electrocardiogram (ECG). It aims to correct the electrical dyssynchrony present in 30 to 50 of patients in this population. Relevant data from 241 CHF patients were analysed retrospectively. Cardiac resynchronization therapy (CRT) is an electrical treatment of heart failure with reduced ejection fraction and wide QRS. The purpose of this study was (a) to identify the best ECG parameter that predicts mortality, (b) to evaluate the prognostic marker of ECG against well-established indicators of prognosis. Chronic heart failure (CHF) is associated with high mortality, and there are several established clinical and laboratory parameters that predict mortality in CHF.
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