Navigation Links
Roux-en-Y weight loss surgery raises kidney stone risk
Date:6/17/2009

The most popular type of gastric bypass surgery appears to nearly double the chance that a patient will develop kidney stones, despite earlier assumptions that it would not, Johns Hopkins doctors report in a new study. The overall risk, however, remains fairly small at about 8 percent.

As rates of morbid obesity have climbed in recent years, so has the popularity of various weight-loss operations, with more than 200,000 patients expected to have one of these procedures this year. The most common type of weight loss, or bariatric, surgery, called Roux-en-Y in a nod to the Y-shape of the surgical connections that go around part of the bowel, accomplishes weight loss by decreasing the size of the stomach and allowing food to bypass part of the small intestine.

While other bariatric procedures have been shown to decrease calcium absorption and increase the risk of kidney stones, doctors have long assumed that the Roux-en-Y procedure did not.

To test the assumption, researchers led by Brian Matlaga, M.D., assistant professor of urology at the Johns Hopkins University School of Medicine and director of stone diseases and ambulatory care at Hopkins' James Buchanan Brady Urological Institute, used an insurance claims database to identify 4,639 patients who had undergone Roux-en-Y surgery between 2002 and 2006. The researchers identified a second set of 4,639 patients who had similar characteristicsincluding age, gender, and body mass indices that indicate obesitybut not the surgery.

Using medical information encoded in the database for both patient populations, the researchers looked to see which patients were either diagnosed with kidney stones or had treatment for this condition. Their results showed that while only 8 percent of the Roux-en-Y patients developed kidney stones, they were nearly twice as likely to get this condition as the patients with similar characteristics who didn't have weight loss surgery. The researchers published these findings in the June Journal of Urology.

"Our study is not an indictment of bariatric surgerythe benefits of this surgery are well known," says Matlaga. "Rather, we'd like to help physicians understand that their bariatric patients could be at risk for kidney stones, a condition that could be avoidable with proper preventative care."

Matlaga explains that kidney stones are often caused by an excess of a dietary component known as oxalate, which normally binds with calcium and is flushed out of the body. Roux-en-Y surgery might reduce the amount of calcium that patients absorb, contributing to kidney stone formation. Consequently, Matlaga adds, doctors may be able to help patients avoid kidney stones through calcium supplements or other interventions.

Kidney stones are solid mineral crystals that form within the kidneys and can cause pain that is frequently severe. Each year, people make almost 3 million visits to health care providers and more than half a million people go to emergency rooms for kidney stone problems.


'/>"/>

Contact: Christen Brownlee
cbrownlee@jhmi.edu
410-955-7832
Johns Hopkins Medical Institutions
Source:Eurekalert

Related medicine news :

1. Newborn weights affected by environmental contaminants
2. Medifast, Inc. to Expand Investment in Corporate Medifast Weight Control Centers
3. Diabetes Drug Byetta May Aid Weight Loss in Obese Patients
4. Might Weight-Loss Surgery Lead to Fractures?
5. Pamela Lyon, M.D. Achieves Board Certification in Bariatric, Weight Loss Medicine
6. VIVUS Qnexa Shows Significantly Improved Blood Sugar Control Through Weight Loss In Patients With Type 2 Diabetes
7. Sleeplessness a Weighty Matter
8. Use of Mealtime Pramlintide Added to Basal Insulin Showed Similar Improvements in Glycemic Control Compared to Rapid-Acting Insulin, With Lower Risk of Hypoglycemia and Without Weight Gain: Data Presented at ADA 2009
9. Body and Weight Checking May Signify an Eating Disorder
10. Keys to a Fit Pregnancy and Losing the Baby Weight
11. Many Overweight Kids Not Getting a Good Nights Sleep
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/3/2016)... ... , ... Cosmetic surgeon Dr. Mark Youssef first introduced Voluma® to his ... his menu of services to give his patients as many options as possible in ... improving his approach to ensure he stays at the forefront of the most modern ...
(Date:5/3/2016)... ... May 03, 2016 , ... ... been selected by Tidelands Health, a three hospital system in South Carolina, to ... on the lookout for technology that enhances communication, drives workflow efficiencies and improves ...
(Date:5/3/2016)... Texas (PRWEB) , ... May 03, 2016 , ... Park ... that live in or adjacent to the 75204, 75205, 75206, 75209, 75219, 75220, 75225, ... Lawn/Uptown, Greenway Parks, Bluffview, Midway Hollow, North Dallas, Plano, Preston Hollow and Park Cities ...
(Date:5/3/2016)... ... May 03, 2016 , ... Octo Consulting ... and digital consulting services to the federal government, has been awarded a $9.9 ... Indefinite Quantity (ID/IQ) contract in support of the U.S. Army Program Executive Office ...
(Date:5/3/2016)... California (PRWEB) , ... May ... ... leading provider of Microsoft secure remote access connectivity solutions, today announced the ... platform for Microsoft DirectAccess. The new Celestix SecureAccess release will enable organizations ...
Breaking Medicine News(10 mins):
(Date:4/29/2016)... India , April 29, 2016 ... the life science laboratory due to the growing demands ... by advance technology, contemporary automated systems are already adept ... performed by slow, tedious and manual labor. Instrumentation continues ... were not even conceivable just a few years ago. ...
(Date:4/28/2016)... , April 28, 2016  While Abbott,s announced ... the company,s valve repair and stent business, healthcare ... places Abbott more firmly into patient monitoring.  Kalorama ... fastest growing device areas, with double-digit growth expected ... report,  Advanced Remote Patient Monitoring . ...
(Date:4/28/2016)... , April 28, 2016  Marking its ... accessible breast and ovarian cancer risk test, ... analyzing 30 genes that highly impact the most ... Available today, the Color Test analyzes hereditary cancer ... stomach, and uterine cancers. The Color Test is ...
Breaking Medicine Technology: