Most recent update: Thursday, March 21, 2019 - 10:23

Bariatric News - Cookies & privacy policy

You are here

Anaemia risk

Ten-year follow-up after RYGB finds high rate of anaemia

The average rate of preoperative anaemia was 20 percent; the rate increased ten years after RYGB to 47 percent

Researchers have reported a high rate of anaemia ten years after patients received Roux-en-Y gastric bypass (RYGB), suggesting that long-term follow-up with a bariatric specialist is important to lessen the risk for anaemia, according to a study, ‘Prevalence of Anemia 10 Years After Roux-en-Y Gastric Bypass in a Single Veterans Affairs Medical Center’, published by JAMA Surgery.

The potential adverse outcomes of RYGB, such as mineral and/or vitamin deficiency, are well documented, but the prevalence of anaemia is less so. Therefore, Dr Dan Eisenberg from Palo Alto Veterans Affairs Health Care System, Palo Alto and Stanford University, Stanford, CA, and colleagues examined the prevalence of anaemia ten years after RYGB and assessed whether postoperative bariatric follow-up influences rates of anaemia. The study included 74 patients (78 percent men; average age, 51 years) who underwent RYGB at a single Veterans Affairs Medical Center.

The average rate of preoperative anaemia was 20 percent; the rate increased ten years after RYGB to 47 percent. At 10 years after RYGB, the anaemia rate in the group without bariatric specialist follow-up increased to 57 percent, from 22 percent before surgery. The rate of anaemia in the group with bariatric specialist follow-up did not increase significantly after ten years (19 percent vs 13 percent). Compared with patients with bariatric specialist follow-up, patients without bariatric specialist follow-up had significantly higher odds of anaemia at ten years after adjusting for preoperative anaemia.

The major limitation of this study was the size of the group with bariatric specialist follow-up, which may be too small to identify a significant difference in the ten-year anaemia rates compared with preoperative rates.

"Our study suggests that follow-up with bariatric specialists more than 5 years after surgery, rather than with specialists with no bariatric expertise, can decrease long-term anaemia risk,” the authors write. “This finding may demonstrate the bariatric specialist's specific understanding of the long-term risk for nutritional deficiency after RYGB and the importance of vitamin and mineral supplementation.”

Want more stories like this? Subscribe to Bariatric News!

Bariatric News
Keep up to date! Get the latest news in your inbox. NOTE: Bariatric News WILL NOT pass on your details to 3rd parties. However, you may receive ‘marketing emails’ sent by us on behalf of 3rd parties.