Transition of Single Surgeon Bariatric Service to an Interdisciplinary Multiple Surgeon Model

Study Overview
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Brief Summary
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This retrospective study will analyse the transition of an Australian hospital which significantly increased volume of bariatric operations after introduction of a clinical pathway, and to assess the outcomes. Barriers to introduction of the multidisciplinary pathway and the means to overcome these will also be analysed and discussed. The analysis will also determine if there are any other areas of bariatric surgery which can be further investigated to optimise current practice.

Official Title
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Transition of Single Surgeon Bariatric Service to an Interdisciplinary Multiple Surgeon Model

Conditions
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Obesity, Bariatric Surgery Candidate

Intervention / Treatment
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* Procedure: Bariatric surgery- single surgeon service
* Procedure: Bariatric surgery- multiple surgeon + multidisciplinary team approach
* Procedure: Bariatric surgery: formalized streamlined multiple surgeon + multidisciplinary team approach


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Participants must have had bariatric surgery at The Queen Elizabeth Hospital between 2008-2018 Exclusion Criteria: nil
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| 2008-2012 Participants<br>Participants who underwent bariatric surgery between 2008 and 2012 (inclusive). | Procedure: Bariatric surgery- single surgeon service<br> <br> |
| 2013-2016 Participants<br>Participants who underwent bariatric surgery between 2013 and 2016 (inclusive). | Procedure: Bariatric surgery- multiple surgeon + multidisciplinary team approach<br> <br> |
| 2017- 2018 Participants<br>Participants who underwent bariatric surgery between 2017 and 2018 (inclusive). | Procedure: Bariatric surgery: formalized streamlined multiple surgeon + multidisciplinary team approach<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Post-operative length of stay (nights) | This will be measured in number of nights the participant stayed in hospital after the procedure. | The number of nights the participant stay in hospital from the day of procedure to the day of hospital discharge. This time period occurs immediately after the procedure. This data will be retrospectively reviewed on an average of 5 years. | 
| End weight loss | Post-operative weight loss | Up to 12 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| End weight loss | Post-operative weight loss | Up to 24 months | 
| End weight loss | Post-operative weight loss | Up to 36 months | 
| Intraoperative time | Duration of operative time measured in minutes | The start time of the operation to the end time of the procedure. This data will be retrospectively reviewed on an average of 5 years. | 
| Post-operative complications | Complications which occurred in the post operative period | Up to 36 months | 
| Number of operations performed in time period | The number of operations which occurred in each group | Retrospectively reviewed, 1 yearly | 
| Type of Operation Performed | The number of the different types of bariatric operations which occurred in each group | Retrospectively reviewed, 1 yearly | 
| Number of participants converted from Gastric Sleeve to Gastric Bypass |  | Retrospectively reviewed, 1 yearly | 
| Number of patients on surgical waitlist | The number of patients on the surgical waitlist for each time period | Retrospectively reviewed, 1 yearly |