Ivcd pattern5/1/2023 ![]() ![]() They used data from the Korean Acute Heart Failure registry 7) with 5,157 patients. Authors suggest that NICD was associated with an increased risk of 1-year mortality, whereas the prognostic impacts of LBBB/RBBB was limited compared to previous studies. 6) analyzed data from the Korean Acute Heart Failure registry and investigated prognostic impact of NICD and compared 1-year all-cause mortality of patient with NICD to those of patients with RBBB, LBBB, and normal QRS duration. Additionally, relatively sparse data are available on the comparison of the prognosis of LBBB, right bundle branch block (RBBB), NICD and narrow QRS in the same cohort with AHF. 5) Despite its considerable prevalence, the prognostic impact of NICD in patients with acute heart failure (AHF) has not been well evaluated and compared with that of typical bundle branch blocks (BBBs), especially in East Asia. 4) The prevalence of NICD was reported in 3.8–5.8% of heart failure (HF) patients with reduced ejection fraction. 3) Furthermore, nonspecific intraventricular conduction disturbance (NICD) in an ECG is associated with increased mortality and a markedly elevated risk of sudden arrhythmic death in a general population. ![]() 2) In hypertensive patients with left ventricular hypertrophy, prolonged QRS duration predicted all-cause and cardiovascular mortality and identified patients at higher risk for sudden cardiac death. 1) For patients with coronary artery disease plus depressed ventricular function and nonsustained ventricular tachycardia, QRS prolongation resulting from left bundle branch block (LBBB) or intraventricular conduction disturbance (IVCD) has been associated with a 50% increase in the risk of both arrhythmic and total mortality. It has long been recognized that when associated with heart disease, prolonged QRS duration in an ECG is an independent predictor of adverse outcome. ![]() Delayed intraventricular conduction is a common clinical abnormality detected on the electrocardiogram (ECG). ![]()
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