Comparison of the effects of open and endovascular aortic aneurysm repair on long-term renal function using chronic kidney disease staging based on glomerular filtration rate

被引:90
作者
Mills, Joseph L., Sr. [1 ]
Duong, Son T.
Leon, Luis R., Jr.
Goshima, Kaoru R.
Ihnat, Daniel M.
Wendel, Christopher S.
Gruessner, Angelika
机构
[1] Univ Arizona, Hlth Sci Ctr, Univ Med Ctr, Tucson, AZ 85724 USA
关键词
D O I
10.1016/j.jvs.2008.01.039
中图分类号
R61 [外科手术学];
学科分类号
摘要
Objective: It has been suggested that endovascular aneurysm repair (EVAR) in concert with serial contrast-enhanced computed tomography (CT) surveillance adversely impacts renal function. Our primary objectives were to assess serial renal function in patients undergoing EVAR and open repair (OR) and to evaluate the relative effects of method of repair on renal function. Methods: A thorough retrospective chart review was performed on 223 consecutive patients (103 EVAR, 120 OR) who tinder-went abdominal aortic aneurysm (AAA) repair. Demographics, pertinent risk factors, CT scan number, morbidity, and mortality were recorded in a database. Baseline, 30- and 90-day, and most recent glomerular filtration rate (GFR) were calculated. Mean GFR changes and renal function decline (using Chronic Kidney Disease [CKD] staging and Kaplan-Meier plot) were determined. EVAR and OR patients were compared. CKD prevalence (>= stage 3, National Kidney Foundation) was determined before repair and in longitudinal follow-up. Observed-expected (OF) ratios for CKD were calculated for EVAR and OR patients by comparing observed CKD prevalence with the expected, age-adjusted prevalence. Results: The only baseline difference between EVAR and OR cohorts was female gender (4% vs 12%, P =.029). Thirty-day GFR was significantly reduced in OR patients (P =.047), but it recovered and there were no differences in mean GFR at a mean follow-up of 23.2 months. However, 18% to 39% of patients in the EVAR and OR groups developed significant renal function decline over time depending on its definition. OF ratios for CKD prevalence were greater in AAA patients at baseline (OE 1.28-3.23, depending upon age group). During follow-up, the prevalence and severity of CKD increased regardless of method of repair (OE 1.8-9.0). Deterioration of renal function was independently associated with age > 70 years in all patients (RR 2.92) and performance of EVAR compared with OR (RR 3.5) during long-term follow-up. Conclusions: Compared with EVAR, OR was associated with a significant but transient fall in GFR at 30 days. Renal function decline after AAA repair was common, regardless of method, especially in patients > 70 years of age. However, the renal function decline was significantly greater by Kaplan-Meier analysis in EVAR than OR patients during long-term follow-up. More aggressive strategies to monitor and preserve renal function after AAA repair are warranted.
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收藏
页码:1141 / 1149
页数:9
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