macguire - what happens when all else fails - bariatrics...what happens when all else fails?...
TRANSCRIPT
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WHAT HAPPENS WHEN ALL ELSE
FAILS? BariatricsFrontiers in Medicine
February 8, 2014
Mary MacGuire, M.D., F.A.C.S.
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Your Role
• Advice preop
▫ The effectiveness of diets
▫ Long term result of diets
• Care Postop
▫ Postop Complications
▫ Long Term Metabolic Problems
▫ Every Operation is Different
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Preop Choices
Where to go
What operation
Postop Care
frequency
cost
• Helping Your Super Obese Patient
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Considerations in Choosing
Surgery• Insurance status
• BMI > 40kg/m2 or uncontrollable metabolic problems with BMI 35 or more
• Ambulatory, Able to travel
• Age, adolescents finished with growth spurt
• Ability to survive surgery
• Comorbidities
• Willingness to make big changes
• Addiction free…..drugs, alcohol, tobacco
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Most Important
• Motivation
• Intelligence
• Understanding
• Support
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Does it really work
and, does it really matter?• Life expectancy
• Cancer risk
• Lifetime cost of care for comorbidities
▫ Diabetes
▫ Hypertension
▫ Degenerative joint disease
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Why is it so hard to lose weight?
• 1. “thrifty” gene
• 2. other genetic and environmental factors
• 3. social and familial pressures
• 4. ghrelin production
• 5. high quality abundant food supply
• 6. decreased activity level
• 7. brain set, hunger/caloric intake
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Types of Surgeries
Restrictive Malabsorptive
• Lap band
• Sleeve Gastrectomy
• Vertical banded gastroplasty
� Roux-en-Y gastric bypass
� Biliopancreaticdiversion with duodenal switch
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Restrictive vs. Malabsorptive
• Decreased gastric volume
• Delayed emptying
• Divert nutrient flow
• Decrease absorptive surface
• Hormonally alter satiety
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All operations can be overcome
• Ingestion of high calorie liquids
▫ Milk
▫ Ice cream
▫ Juice
▫ Soda pop
▫ Alcohol
• Patients unwilling to abstain from these liquids should not be referred for surgery
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Calculating Risk
• 1 point each for
▫ Male gender
▫ BMI>50 kg/m2
▫ HTN
▫ Risk of PE
▫ Age > 45
• 4-5 risk ff=mort 7.6%
• 2-3 risk ff=mort 1.9%
• 0-1 risk ff=mort 0.31%
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Laparoscopic Adjustable Band
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Laparoscopic Adjustable Band
Advantages Disadvantages
• Widely available
• No metabolic complications
• Lowest M&M
• No anastomoses
• Reversible
▫ Pregnancy
▫ Chemotherapy
• Not for the super-obese
• Requires frequent adjustment
• Close follow-up correlates directly with success
• GERD, erosion, slippage
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Best for
• Patients without geographic and financial limitations to their access to care
• Patients without severe diabetes
• Patients with a lower BMI
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Use is decreasing worldwide
• More bands are removed than are placed worldwide
• Sleeve resection more effective with lower maintenance
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Laparoscopic Roux-en-Y
Gastric Bypass
Removes the duodenum and pylorus from the food stream and has 2 anastomoses
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Advantages Disadvantages
• Mortality rate < 1 %
• Proven record of long term weight loss
• Deficiencies in Iron, Calcium and B12
• Internal hernias
• Gastric Remnant excluded
• Malabsorption
• Diarrhea, flatulence and dehydration
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Laparoscopic biliary pancreatic diversion,
duodenal sw
itch
Sometimes done as a staged procedure in the superobeseRemoves the greater curvature of the stomach, has multiple staple lines
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Advantages Disadvantages
• Excellent weight loss, especially for the superobese, BMI>70
• No dumping
• Less risk of marginal ulcer
• Increased food intake does not interfere with weight loss
• Highest complication rate
• Protein and fat soluble vitamin malabsorption
• Iron deficiency
• Diarrhea and flatulence
• Internal hernias
• osteoporosis
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Laparoscopic Sleeve Gastrectomy
Probably the most popular bariatric surgery worldwide in the past year
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Advantages Disadvantages
• Pylorus and duodenum are still in the food stream
• Safer, shorter surgery
• Increased satiety
• Decreased ghrelin levels
• Significant postop nausea and vomiting requiring medication
• Less wt loss
• Long staple line which may leak and cause a fistula
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Especially Beneficial for
Patients with
▫ iron deficiency anemia
▫ on steroids
▫ transplant
▫ arthritis dependent on NSAIDs
▫ autoimmune connective tissue disorder
▫ pre-existing vitamin deficiency
▫ unable to comply with frequent follow-up
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Postop Complications
Early Late
• PE
• Leak
• Wound/port infections
• Dumping
• SBO
• Marginal ulcer
• Stomal stenoses
• Vitamin and Mineral deficiencies
• Gallbladder disease
• Weight regain
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Pulmonary Embolus
• Leading cause of postop death
• Can occur post-discharge
• Can be confused with leak
• Tachycardia
• Spiral CT angio if not too big for scanner,
• Otherwise, image/explore for leak then anticoagulate
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LEAK
• Tachycardia >120 is an emergency, can be PE, leak, infection
• 20% of pts with leaks die, 2nd cause of mort
• Pt may not have fever, guarding or tenderness
• Requires immediate surgical intervention and may require return to bariatric center
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Dumping
• Diaphoresis, nausea, diarrhea after eating
• Usually means the pt is consuming high sugar liquids like juice or soda pop
• Advise pt to stop high calorie liquids or their operation will fail
• Increase the protein and fiber in the diet
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Cholelithiasis
• 28% of pts need ESLC within 3 years
• Ursodiol for 6 months postop
• ESLC at the time of surgery for all patients with ultrasound-proven gallstones
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Weight Regain
• 25-30% of patients at 2-5 years
• Lower with the malabsorptive procedures
• Frequently related to high calorie liquids
• May require surgical revision
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Jejunoileal bypass
• An old operation first performed in the 50’s
• Many done in the late 60’s and 70’s
• Require reversal and another bariatric procedure because the operation causes portal hypertension
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Wernicke’s Encephalopathy
• Acute on chronic vomiting
• May be slowly progressive
• Any patient who has had a bariatric procedure and who develops nausea and vomiting should be hydrated intravenously and given thiamine
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Be willing to treat
• Protein-calorie Malnutrition, esp with the malabsorptive procedures
• Thiamine, calcium and fat-soluble vitamin deficiencies
• Depression
• Iron deficiency anemia
▫ Fe gluconate is absorbed in a non-acid environment
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Be Aware that
• The death rate for bariatric surgery patients is 4.6% for the first year, less with youth and restrictive procedures
• The failure rate is 10% for enough wt loss to resolve obesity comorbidities
• Mortality is directly related to patient age and center experience
• <2% of eligible patients have surgery annually
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Weight Loss
in a Morbidly Obese Person• Confers a 30-40% reduction in 10 year mortality
• Decreases risk of cardiovascular and neoplastic disease, esp in women
• Is rarely achieved at a level that will change metabolism with CHO or fat restricted low calorie diets
• The increase in ghrelin 6 months after a significant weight loss leads to regain in the majority of dieters
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Insurance
• Frequently requires documentation of failure of medically supervised weight loss
• This has no correlation with bariatric surgery success
• Places a barrier many patients do not surmount in order to have surgery
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Preop
• A low carbohydrate diet for 2 weeks preopdecreases the size of the liver and makes it more likely that the proposed surgery can be achieved laparoscopically, with lower morbidity and a shorter hospital stay
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Questions?