Objective: To investigate the correlation between serum 1,25-dihydroxyvitamin D (1,25D) levels and left atrial diameter (LAD) using echocardiography in pre-dialysis chronic kidney disease (CKD).
Subjects And Methods: From an initial population of 487 patients (109 met the exclusion criteria), a total of 378 patients with CKD stage 3a - 5 who had not undergone dialysis or kidney transplantation were included in the study. The relationship between serum 1,25D levels and LAD was examined. Moreover, factors that impacted LAD were extracted through stepwise multiple regression analyses.
Results: Serum 1,25D levels correlated negatively with LAD, left ventricular end-diastolic diameter, interventricular septum thickness, end-diastolic volume, stroke volume, left ventricular mass index (LVMI), and E/e'. Stepwise multiple regression analyses revealed there was a significant relationship between serum 1,25D levels and LAD (regression coefficient = -0.070, p = 0.001). In the stratified analysis, serum 1,25D levels were associated with LAD in the LVMI < 125 g/m (regression coefficient = -0.067, p = 0.038) and ejection fraction (EF) ≥ 60% groups (regression coefficient = -0.080, p = 0.004).
Conclusion: Serum 1,25D levels were independently associated with LAD in CKD patients; however, the association was not significant in patients with an EF < 60% and LVMI > 125 g/m2.
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