Bariatric Surgery Pre-Op Checklist: What You Must Know 

Deciding to undergo bariatric surgery is a life-changing step, but preparation is everything. Whether you're planning for a gastric sleeve, gastric bypass, duodenal switch, or gastric balloon, the pre-operative phase is just as important as the procedure itself. 
 
Here’s a detailed checklist to help you prepare physically, mentally, and emotionally for your weight loss journey. 
 
1. Medical Evaluation   
Before surgery, your bariatric team will order a series of medical tests to ensure you're a good candidate. These may include blood tests, an ECG, chest X-ray, and sometimes a sleep study to screen for obstructive sleep apnea. Conditions such as type 2 diabetes, high blood pressure, or thyroid issues must be under control before the procedure. 
2. Nutritional Assessment   
You’ll meet with a bariatric nutritionist to review your eating habits and discuss dietary changes. Many patients are asked to follow a low-calorie, high-protein diet for 1–2 weeks before surgery to shrink the liver and reduce surgical risks. This is a crucial step that directly impacts the success of laparoscopic surgeries. 
 
3. Psychological Evaluation   
Mental health readiness is key to success. A psychologist or psychiatrist will assess your coping skills, motivation, and emotional relationship with food. This is not a pass/fail test, but a way to ensure that you're mentally prepared for the major lifestyle changes that come after surgery. 
 
4. Smoking & Alcohol Cessation   
Smoking and alcohol increase surgical risks, impair healing, and may affect nutrient absorption post-op. Most bariatric centers require patients to quit smoking and limit alcohol consumption weeks before surgery. 
 
5. Pre-Op Exercise   
Starting light activity before surgery, even daily walking, improves cardiovascular health and lung capacity, which aids recovery. It also sets the foundation for a more active lifestyle after surgery. 

 
 
6. Medication Management   
You may need to stop certain medications like blood thinners, anti-inflammatories, or birth control in the days leading up to your surgery. Always consult your bariatric doctor for a tailored plan. 
 
7. Understanding the Procedure   
Ask questions about what to expect on the day of surgery, anesthesia, pain management, and your hospital stay. Understanding the process helps reduce anxiety and sets realistic expectations. 
 
8. Arrange Support at Home   
Recovery can take 1–3 weeks, depending on the procedure. Make sure you have someone to assist with meals, medications, and basic activities during the first few days. 
 
 

9. Plan for Post-Op Lifestyle   
Stock up on protein shakes, vitamins, and soft foods. Prep your environment for a calm and supportive recovery. 
 
Preparing well increases your chances of a smooth surgery and a successful outcome. It sets the foundation for healthy habits that begin even before your weight loss transformation officially starts.