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Peritoneal dialysis (PD) patients have a high incidence of cardiovascular events (CVEs). Left ventricular fraction shortening (LVFS), one of the echocardiographic parameters, is an independent risk factor for mortality in previous studies. The aim of this study was to evaluate associations between LVFS and CVEs in PD patients. This was a single-center observational cohort study. Seven hundred and eighty-four PD patients were enrolled from 1 January 2012 to 1 June 2021 and followed until 1 June 2022. The primary outcome was the incidence of CVEs. PD patients were categorized into three groups according to the tertiles of LVFS levels (tertile 1-tertile 3). Kaplan-Meier method, Cox proportional hazard models and competing risk regression models were used for survival analysis. The areas under the curve (AUC) of receiver-operating characteristic analysis was used to determine the predictive values of LVFS for CVEs. A preplanned subgroup analysis was assessed according to age, gender, and the presence of hypertension and dyslipidemia, etc. During a median follow-up period of 42.3 months (interquartile range 24.0–79.0 months), 259 CVEs occurred. Compared to the other two groups respectively, patients in tertile 3 group had the lowest incidence of CVEs (24.5% vs 31.6% vs 43.0%, respectively,  p  &lt; 0.05). After multiple adjustments, the tertile 3 group was associated with the 45.1% decrease in the CVEs hazard compared to that of the tertile1 group (SHR = 0.549, 95%CI: 0.395–0.762,  p  &lt; 0.001). Subgroup analysis demonstrated that tertile 1 group as the reference, the association between LVFS and CVEs in tertile 3 group was robust among female patients (HR = 0.506, 95%CI: 0.309–0.829,  p  = 0.007), aged &lt; 45 years (HR = 0.496, 95%CI: 0.331–0.744,  p  = 0.001), history of hypertension (HR = 0.586, 95%CI: 0.349–0.872,  p  = 0.008) and combined with dyslipidemia (HR = 0.464, 95%CI: 0.269–0.799,  p  = 0.006). This study suggests that LVFS is independently associated with the increased risk of CVEs in PD patients, especially those with aged &lt; 45 years, female, with hypertension and dyslipidemia.

The association of left ventricular fraction shortening with cardiovascular events in peritoneal dialysis patients