Poster Presentation Australian and New Zealand Obesity Society Annual Scientific Conference 2023

Long term bariatric surgical outcomes from a public hospital service (#210)

Perin Lee 1 , Janet Frankliin 1 2 3 , Samantha Hocking 1 2 4 , Tania Markovic 1 2 4
  1. Metabolism and Obesity Services Royal Prince Alfred Hospital, Sydney Local Health District, Sydney, NSW, Australia
  2. Central Clinical School, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
  3. Eating Disorders and Nutrition research group, Translational Health Research Institute, Faculty of Medicine, Western Sydney University, Sydney, NSW, Australia
  4. Boden Initiative, Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia

Background: Long-term outcomes from bariatric surgery in the public healthcare setting are limited.

 

Aims: We aimed to assess the weight and comorbidity outcomes following bariatric surgery at a publicly funded tertiary obesity service.

 

Methods: A retrospective cohort of 183 participants who underwent bariatric surgery between 1 October 2009 and 1 June 2022 was identified. Postoperative weight change and comorbidity status were assessed from 1 to 10 years post-bariatric surgery. Major obesity related comorbidities included were type 2 diabetes mellitus (T2DM), dyslipidaemia, hypertension, obstructive sleep apnoea (OSA), arthritis/arthralgia and depression and anxiety.    

 

Results: At baseline the cohort had a mean age of 50.6 years (SD, 10.8 years), mean weight of 134.0 kg (SD, 30.4 kg) and mean BMI of 49.0 kg/m2 (SD, 9.4 kg/m2). At baseline, 60.7% of the cohort had three or more comorbidities of the six assessed. Maximal weight loss occurred at 18-months post-surgery with a mean weight reduction of 26.8% (SD, 9.9%). Data was available for 45% (n=14) of the eligible cohort at 10 years with maintenance of 21.4% weight loss (SD 9.6%, p<0.001) when compared to baseline. At 5 years 46% of the cohort had three or more of six comorbidities. Compared to baseline, at 5 years there was a significant reduction in the proportion of the cohort with T2DM (-14.7%, p<0.001), OSA (-13.2%, p<0.05), hypertension (-7.2%, p<0.05) and dyslipidaemia (-13.8%, p<0.05) but there was no change in the proportion with anxiety, depression or arthritis and arthralgia.

 

Conclusions: In a cohort with complicated obesity, bariatric surgery in a publicly funded service has long term efficacy, with weight loss maintained to 10 years follow up. There was a reduction in the incidence of four major obesity related comorbidities at five years follow up.