Table 1.

Overview of the Modifiable Patient-Related Factors

Component	Rationale
Lifestyle Intervention	Reduce complications
Preoperative information, education and counselling	Reduce fear and anxiety
Preoperative nutritional status	Optimising diet, reduce insulin resistance
Exercise intervention	Improve physical fitness, reduce complications,
Adhering Enhanced Recovery After Bariatric Surgery (ERABS) Principles18–20
1. Preoperative carbohydrate treatment	1. Reduce insulin resistance
2. Not routinely using bowel preparation	2. Reduce dehydration, prolonged ileus and risk of anastomotic leakage
3. Prophylaxis against thromboembolism	3. Reduce thromboembolic complications
4. Antibiotic prophylaxis	4. Reduce infection rate