Pradeep Arora1, Sina Davari-Farid2, Leili Pourafkari3, Anu Gupta1, Hasan H Dosluoglu4, Nader D Nader5. 1. Department of Medicine, University at Buffalo, The State University of New York, Buffalo, NY. 2. Department of Anesthesiology, University at Buffalo, The State University of New York, Buffalo, NY. 3. Department of Anesthesiology, University at Buffalo, The State University of New York, Buffalo, NY; Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. 4. Department of Surgery, University at Buffalo, The State University of New York, Buffalo, NY. 5. Department of Anesthesiology, University at Buffalo, The State University of New York, Buffalo, NY. Electronic address: nnader@buffalo.edu.
Abstract
OBJECTIVE: This study examined the effect of perioperative acute kidney injury (AKI) on long-term kidney dysfunction and death after lower extremity revascularization. Perioperative AKI is commonly seen in the form of mild rises of serum creatinine after major cardiovascular surgeries. Its effect on long-term survival and development of chronic kidney disease (CKD) is well established in cardiac surgery patients. However, there are no data on the effect of AKI on long-term outcomes after revascularization for lower limb ischemia. METHODS: We retrospectively reviewed the patients with peripheral arterial occlusive diseases who underwent endovascular or surgical revascularization of the lower extremities from 2001 through 2010. All demographic and clinical information have been maintained prospectively by the surgeon and followed up by the research team. Perioperative AKI was defined as rises of ≥0.3 mg/dL in serum creatinine from the values measured preoperatively. The primary end points were development of CKD (estimated glomerular filtration rate <60 mL/min) and all-cause mortality. Univariate and multivariate analyses were performed to examine relevant associations. RESULTS: Within the study period, 717 patients underwent 875 procedures. Mean follow-up was 42 ± 14 months. AKI developed in 86 patients after the index procedure. Overall prevalence of CKD diagnosed postoperatively was 14.9%. Overall mortality reported within the follow-up period was 55.9%. Perioperative AKI was a significant predictor of CKD (area under the curve, 0.84 ± 0.13) and all cause mortality (area under the curve, 0.82 ± 0.12). CONCLUSIONS: Perioperative AKI is associated with an increased occurrence of CKD and a higher mortality rate after revascularization procedures of the lower extremities. Published by Elsevier Inc.
OBJECTIVE: This study examined the effect of perioperative acute kidney injury (AKI) on long-term kidney dysfunction and death after lower extremity revascularization. Perioperative AKI is commonly seen in the form of mild rises of serum creatinine after major cardiovascular surgeries. Its effect on long-term survival and development of chronic kidney disease (CKD) is well established in cardiac surgery patients. However, there are no data on the effect of AKI on long-term outcomes after revascularization for lower limb ischemia. METHODS: We retrospectively reviewed the patients with peripheral arterial occlusive diseases who underwent endovascular or surgical revascularization of the lower extremities from 2001 through 2010. All demographic and clinical information have been maintained prospectively by the surgeon and followed up by the research team. Perioperative AKI was defined as rises of ≥0.3 mg/dL in serum creatinine from the values measured preoperatively. The primary end points were development of CKD (estimated glomerular filtration rate <60 mL/min) and all-cause mortality. Univariate and multivariate analyses were performed to examine relevant associations. RESULTS: Within the study period, 717 patients underwent 875 procedures. Mean follow-up was 42 ± 14 months. AKI developed in 86 patients after the index procedure. Overall prevalence of CKD diagnosed postoperatively was 14.9%. Overall mortality reported within the follow-up period was 55.9%. Perioperative AKI was a significant predictor of CKD (area under the curve, 0.84 ± 0.13) and all cause mortality (area under the curve, 0.82 ± 0.12). CONCLUSIONS: Perioperative AKI is associated with an increased occurrence of CKD and a higher mortality rate after revascularization procedures of the lower extremities. Published by Elsevier Inc.
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