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Bariatric surgery lowers diabetic retinopathy risk in obese patients with type 2 diabetes: Study

Medha BaranwalWritten by Medha Baranwal Published On 2022-01-10T10:00:13+05:30  |  Updated On 2022-01-10T15:31:44+05:30
Bariatric surgery lowers diabetic retinopathy risk in obese patients with type 2 diabetes: Study
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Canada: Bariatric surgery in patients with obesity and type 2 diabetes (T2D) is associated with fewer cases of diabetic retinopathy, finds a recent study. The findings of the study were presented at the American Academy of Ophthalmology meeting held from Nov. 12-15, 2021 and subsequently published in the American Journal of Ophthalmology.Bariatric surgery in obese patients has been shown...

Canada: Bariatric surgery in patients with obesity and type 2 diabetes (T2D) is associated with fewer cases of diabetic retinopathy, finds a recent study. The findings of the study were presented at the American Academy of Ophthalmology meeting held from Nov. 12-15, 2021 and subsequently published in the American Journal of Ophthalmology.

Bariatric surgery in obese patients has been shown to result in remission of type 2 diabetes and reduce other microvascular complications. However, its impact on diabetic retinopathy is not clear. Results from some trial suggests early worsening of DR postsurgery because of rapid improvements in hyperglycemia.

Caberry W Yu, School of Medicine, Queen's University, Kingston, Ontario, Canada, and colleagues sought to estimate the impact of bariatric surgery on DR for obese patients compared with medical treatment in a meta-analysis. 

For the purpose, the searched the online databases up to March 2020. The study included primary studies comparing DR in patients undergoing bariatric surgery with those undergoing medical management. The researchers meta-analyzed the results using a random-effects model. 

Primary outcomes included prevalence of all DR and sight-threatening DR after surgery. 

The meta-analysis overall included 14 studies comprised of 110,300 surgical patients and 252,289 control subjects. 

Based on the study, the researchers found the following:

  • Surgical patients were found to have significantly lower postoperative prevalence of all DR (relative risk [RR] 0.17) and sight-threatening DR (RR 0.47).
  • Early worsening of DR and progression to sight-threatening DR had occurred more often in those with more severe DR initially. However, beyond 12 months, bariatric surgery resulted in significantly fewer patients with worsened DR (RR 0.29).
  • The overall risk of bias was low; estimates of relative effects had low to moderate certainty of evidence.

"The results showed that bariatric surgery was related to lesser cases of all and sight-threatening DR, however, early worsening was more severe in patients who had existing sight-threatening DR," wrote the authors. 

There should be frequent monitoring during the first postoperative year, they suggested. 

Reference:

Yu CW, Park LJ, Pinto A, Ma ON, Lee Y, Gupta R, Chaudhary V, Doumouras AG, Hong D. The Impact of Bariatric Surgery on Diabetic Retinopathy: A Systematic Review and Meta-Analysis. Am J Ophthalmol. 2021 May;225:117-127. doi: 10.1016/j.ajo.2020.12.033. Epub 2021 Jan 9. PMID: 33428884.

American Journal of Ophthalmology diabetic retinopathy obesity type 2 diabetes bariatric surgery 
Source : American Journal of Ophthalmology
Medha Baranwal
Medha Baranwal

    Medha, MSc. Biotechnology

    Medha Baranwal joined Medical Dialogues as an Editor in 2018 for Speciality Medical Dialogues. She covers several medical specialties including Cardiac Sciences, Dentistry, Diabetes and Endo, Diagnostics, ENT, Gastroenterology, Neurosciences, and Radiology. She has completed her Bachelors in Biomedical Sciences from DU and then pursued Masters in Biotechnology from Amity University. She has a working experience of 5 years in the field of medical research writing, scientific writing, content writing, and content management. She can be contacted at  editorial@medicaldialogues.in. Contact no. 011-43720751

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