کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4295751 1612311 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Roux-en-Y Gastric Bypass is Associated with Early Increased Risk Factors for Development of Calcium Oxalate Nephrolithiasis
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی عمل جراحی
پیش نمایش صفحه اول مقاله
Roux-en-Y Gastric Bypass is Associated with Early Increased Risk Factors for Development of Calcium Oxalate Nephrolithiasis
چکیده انگلیسی

BackgroundPatients treated for obesity with jejunoileal bypass (JIB) experienced a marked increased risk of hyperoxaluria, nephrolithiasis, and oxalate nephropathy developing. Jejunoileal bypass has been abandoned and replaced with other options, including Roux-en-Y gastric bypass (RYGB). Changes in urinary lithogenic risk factors after RYGB are currently unknown. Our purpose was to determine whether RYGB is associated with elevated risk of developing calcium oxalate stone formation through increased urinary oxalate excretion and relative supersaturation of calcium oxalate.Study DesignA prospective longitudinal cohort study of 24 morbidly obese adults (9 men and 15 women) recruited from a university-based bariatric surgery clinic scheduled to undergo RYGB between December 2005 and April 2007. Patients provided 24-hour urine collections for analysis 7 days before and 90 days after operation. Primary outcomes were changes in 24-hour urinary oxalate excretion and relative supersaturation of calcium oxalate from baseline to 3 months post-RYGB.ResultsCompared with their baseline, patients undergoing RYGB had increased urinary oxalate excretion (31 ± 10 mg/d versus 41 ± 18 mg/d; p = 0.026) and relative supersaturation of calcium oxalate (1.73 ± 0.81 versus 3.47 ± 2.59; p = 0.030) 3 months post-RYGB in six patients (25%). De novo hyperoxaluria developed. There were no preoperative patient characteristics predictive of development of de novo hyperoxaluria or the magnitude of change of daily oxalate excretion.ConclusionsThis prospective study indicates that RYGB is associated with an earlier increase in urinary oxalate excretion and relative supersaturation of calcium oxalate than previously reported. Additional studies are needed to determine longterm post-RYGB changes in urinary oxalate excretion and identify patients that might be at risk for hyperoxaluria developing.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the American College of Surgeons - Volume 206, Issue 6, June 2008, Pages 1145–1153
نویسندگان
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