Canadian Adult Obesity Clinical Practice Guidelines

Overview

The 2022 Canadian Adult Obesity Clinical Practice Guidelines (CACOP) provide evidencebased recommendations for the comprehensive care of adults with obesity undergoing bariatric surgery. This page summarises the key elements of postoperative management, emphasizing patient safety, optimal weight loss, and the prevention of nutritional deficiencies.

Preoperative Assessment (Brief Recap)

While this page focuses on the postoperative period, successful outcomes begin with a thorough preoperative workup. The guidelines advise:

• Multidisciplinary evaluation (surgery, endocrinology, dietetics, psychology).
• Baseline labs: complete blood count, comprehensive metabolic panel, iron studies, vitamin B12, folate, vitamin D, and thyroid function.
• Education about lifelong diet, activity, and followup requirements.

Immediate Postoperative Care (030 days)

Management in the first month is critical to prevent early complications and to set the stage for longterm success.

1. Hospital Stay

• Average length of stay: 24 days for sleeve gastrectomy, 35 days for RouxenY gastric bypass (RYGB).
• Early ambulation within 612hours postsurgery to reduce venous thromboembolism (VTE) risk.
• Pain control: multimodal analgesia (acetaminophen, NSAIDs when not contraindicated, and shortacting opioids).

2. Fluid & Electrolyte Management

Patients receive intravenous fluids until tolerating oral intake. Monitor sodium, potassium, magnesium, and calcium daily; replace deficiencies promptly.

3. Diet Progression

1. Clear liquids Days 12, 12L/day, no sugar or caffeine.
2. Fullliquid diet Days 37, includes protein shakes (20g protein per serving), lowfat broths, and unsweetened yogurts.
3. Pureed/soft foods Days 814, focus on highprotein, lowsugar foods.
4. Solid foods From week 3 onward, gradually introduce lean protein, nonstarchy vegetables, and limited whole grains.

Target protein intake: 6080g/day (1.5g/kg ideal body weight). Use bariatricspecific supplements if needed.

4. Vitamin & Mineral Supplementation

All patients should receive the following from the first postop day, unless contraindicated:

Check serum levels at 3months and annually thereafter. Adjust doses based on labs.

5. Activity Recommendations

• Begin light walking on postop day 1.
• Aim for 150min/week of moderateintensity activity by week 6.
• Aerobic and resistance training should be introduced gradually under physiotherapist guidance.

Nutrition & Lifestyle Guidance (30 days 1 year)

Protein Prioritisation

Maintain 60g protein/day. Consider whey or soy isolates if oral intake is inadequate.

Meal Structure

• 56 small meals/snacks per day.
• Chew each bite 2030 times; avoid swallowing large pieces.
• Drink fluids 30minutes before or after meals, not during.

Behavioural Interventions

Enroll in a structured bariatric support program that includes cognitivebehavioural therapy, selfmonitoring of food intake, and goal setting.

Weight Loss Targets

Expected excess weight loss (EWL): 6070% at 12months for sleeve gastrectomy, 7080% for RYGB. If EWL <50% at 12months, discuss possible physiologic or behavioural contributors.

Complications & Monitoring (First Year)

Early (30 days)

• Leak monitor for tachycardia, fever, abdominal pain; obtain contrast study if suspicion.
• Bleeding check hemoglobin daily; reexplore if hemodynamically unstable.
• VTE continue prophylactic anticoagulation (e.g., lowmolecularweight heparin) for 714days based on risk.

Intermediate (112 months)

• Strictures (especially after RYGB) present as dysphagia or vomiting; treat with endoscopic dilation.
• Marginal ulcer epigastric pain, NSAID avoidance, PPI therapy (omeprazole 20mg daily).
• Nutrient deficiencies reassess labs at 3, 6, and 12months; adjust supplementation.
• Hypoglycaemia (postRYGB) educate on carbohydrate timing, consider lowglycaemic meals.

Late (Beyond 1 year)

• Weight regain investigate dietary adherence, physical activity, possible hormonal changes; consider revisional surgery if appropriate.
• Gastroesophageal reflux especially after sleeve; evaluate with endoscopy, consider medical therapy or conversion to RYGB.
• Bone health DEXA scan at baseline and every 23years; treat osteopenia/osteoporosis per Canadian osteoporosis guidelines.

Longterm Followup (1 year)

Successful bariatric care is lifelong. The guidelines propose a tiered followup model:

1. Year 1: Monthly visits with the bariatric team (surgeon, dietitian, psychologist, nurse).
2. Years 25: Visits every 34months, focusing on weight trajectory, nutritional status, and comorbidity resolution.
3. Beyond 5years: Annual review, with additional visits if complications arise.

Telehealth can be used for routine checkins, but inperson assessment is required for lab draws and physical exam.

Resources & Further Reading

• Canadian Patient Safety Agency Obesity Guidelines
• Canadian Society of Bariatric Physicians
• Cochrane Reviews on Bariatric Surgery Outcomes
• Health Canada Obesity Policy