Background: Contrast-induced acute kidney injury (CI-AKI) is a common cause of hospital-acquired AKIand a serious complication of percutaneous coronary intervention.Objective: The aim of the present study was to assess whether remote ischemic preconditioning (RIPC)reduces the incidence of CI-AKI.Methods: We conducted a prospective, randomized, sham-controlled clinical study. The study included101 patients admitted to the Intensive Cardiac Therapy Clinic of Medical University of Lodz for electivepercutaneous coronary intervention. The participants were randomly assigned in a 1:1 ratio to either acontrol group (n = 51) or an RIPC group (n = 50). In the latter, RIPC was achieved before percutaneouscoronary intervention by 4 cycles of 5-minute inflation of a cuff on the left upper arm to 200 mm Hgfollowed by 5-minute deflation. In the control group, a deflated cuff was placed on the left arm for 40minutes. Serum creatinine concentration was measured to check for the presence of CI-AKI within 48to 72 hours of percutaneous coronary intervention. Serum neutrophil gelatinase-associated lipocalin levelwas also measured within 3 hours.Results: CI-AKI occurred in 2 patients from the RIPC group (4%) and 3 patients from the control group(5.9%), but the difference was not significant (P = 0.98). The patients who developed CI-AKI also demonstrated increased serum neutrophil gelatinase-associated lipocalin concentrations (the area under the receiver operator characteristic curve = 0.97; 95% CI, 0.938–1.00; P < 0.00) and the optimal cutoff pointvalue was 118.9 ng/mL.Conclusions: The use of RIPC before elective percutaneous coronary intervention was not found to preventCI-AKI.
Background: Contrast-induced acute kidney injury (CI-AKI) is a common cause of hospital-acquired AKI<br>and a serious complication of percutaneous coronary intervention.<br>Objective: The aim of the present study was to assess whether remote ischemic preconditioning (RIPC)<br>reduces the incidence of CI-AKI.<br>Methods: We conducted a prospective, randomized, sham-controlled clinical study. The study included<br>101 patients admitted to the Intensive Cardiac Therapy Clinic of Medical University of Lodz for elective<br>percutaneous coronary intervention. The participants were randomly assigned in a 1:1 ratio to either a<br>control group (n = 51) or an RIPC group (n = 50). In the latter, RIPC was achieved before percutaneous<br>coronary intervention by 4 cycles of 5-minute inflation of a cuff on the left upper arm to 200 mm Hg<br>followed by 5-minute deflation. In the control group, a deflated cuff was placed on the left arm for 40<br>minutes. Serum creatinine concentration was measured to check for the presence of CI-AKI within 48<br>to 72 hours of percutaneous coronary intervention. Serum neutrophil gelatinase-associated lipocalin level<br>was also measured within 3 hours.<br>Results: CI-AKI occurred in 2 patients from the RIPC group (4%) and 3 patients from the control group<br>(5.9%), but the difference was not significant (P = 0.98). The patients who developed CI-AKI also demonstrated increased serum neutrophil gelatinase-associated lipocalin concentrations (the area under the receiver operator characteristic curve = 0.97; 95% CI, 0.938–1.00; P < 0.00) and the optimal cutoff point<br>value was 118.9 ng/mL.<br>Conclusions: The use of RIPC before elective percutaneous coronary intervention was not found to prevent<br>CI-AKI.
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