The effect of different treatment strategies on left ventricular myocardial deformation parameters in patients with chronic renal failure
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The aim of this study was to compare left ventricular (LV) functions by speckle tracking echocardiography (STE) in chronic kidney disease (CKD) patients in various stages and under different renal replacement treatments in order to evaluate possible differences between them. This prospective study included 150 patients with CKD. Renal transplantation patients with glomerular filtration rate greater than 60ml/min/1.73m(2), patients receiving hemodialysis three times a week, and patients in the predialysis stage with glomerular filtration rate less than 30ml/dk/1.73m(2) were assigned into Group 1 (n=50), Group 2 (n=50), and Group 3 (n=50), respectively. LV longitudinal, circumferential, and radial myocardial deformation parameters (strain, strain rate [SR], rotation, twist) were evaluated by STE. Peak systolic longitudinal strain was higher in the transplantation group than the hemodialysis group (-19.93 +/- 3.50 vs-17.47 +/- 3.28%, p<0.017). Peak systolic circumferential strain was lower in the hemodialysis group (-20.97 +/- 4.90%) than Groups 1 and 3 (-25.87 +/- 4.20 and -24.74 +/- 4.55%, respectively, p<0.001). Peak systolic radial SR was higher in the transplantation group than the hemodialysis group (1.84 +/- 0.52 vs 1.55 +/- 0.52s(-1), respectively, p<0.017). Other longitudinal and circumferential deformation parameters together with peak early diastolic radial SR and twist were also significantly different between the groups. Strain, SR, and twist values were mostly lower in the hemodialysis patients, but generally higher in the transplantation patients. LV functions evaluated by STE are better in the renal transplantation patients than the hemodialysis patients and than those in the predialysis stage. This may indicate beneficial effects of renal transplantation on cardiac functions.