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The risk associated with IVCDs was analyzed by calculating subdistribution hazard estimates (SDH deaths due to other causes being considered competing events).RESULTS: The mean age of the population was 68.3 years (SD 11.8). Mortality and cause of death data (in ICD-10 format) were received from the Finnish national register with no losses to follow-up (until December 31, 2020). The primary outcome was cardiac mortality. We explored the prognosis of intraventricular conduction delays (IVCD) - right bundle branch block (RBBB), left bundle branch block (LBBB), and the lesser-known NIVCD - in patients with acute coronary syndrome (ACS).METHODS: This is a retrospective registry analysis of 9,749 consecutive ACS patients undergoing coronary angiography and with an ECG recording available for analysis (2007-2018). After adjusting the analysis with left ventricular ejection fraction, RBBB and NIVCD remained significant risk factors for cardiac mortality.ĬONCLUSION: RBBB, LBBB, and NIVCD were associated with higher cardiac mortality in ACS patients.Ībstract = "BACKGROUND AND AIMS: Initial proof suggests that a non-specific intraventricular conduction delay (NIVCD) is a risk factor for mortality.

In an analysis adjusted for age and cardiac comorbidities, the risk of cardiac mortality was significantly higher in all IVCD groups than among patients with no IVCD: SDH 1.37 (1.15-1.64, p < 0.0001) for RBBB, SDH 1.63 (1.31-2.03 p < 0.0001) for LBBB, and SDH 2.68 (2.19-3.27) for NIVCD. The median follow-up time was 6.1 years (IQR 3.3-9.4), during which 3,156 patients died. RESULTS: The mean age of the population was 68.3 years (SD 11.8). The risk associated with IVCDs was analyzed by calculating subdistribution hazard estimates (SDH deaths due to other causes being considered competing events). METHODS: This is a retrospective registry analysis of 9,749 consecutive ACS patients undergoing coronary angiography and with an ECG recording available for analysis (2007-2018). We explored the prognosis of intraventricular conduction delays (IVCD) - right bundle branch block (RBBB), left bundle branch block (LBBB), and the lesser-known NIVCD - in patients with acute coronary syndrome (ACS). BACKGROUND AND AIMS: Initial proof suggests that a non-specific intraventricular conduction delay (NIVCD) is a risk factor for mortality.