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Biliopancreatic Diversion/Duodenal Switch. Alfons Pomp, MD, FACS Weill Medical College of Cornell University. Disclosure. Consultant/speaker bureau Covidien Ethicon Endo Surgery W.L.Gore Associates. CHUM Hotel-Dieu. I come to bury Cesar not to praise him.
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Biliopancreatic Diversion/Duodenal Switch Alfons Pomp, MD, FACS Weill Medical College of Cornell University
Disclosure • Consultant/speaker bureau Covidien Ethicon Endo Surgery W.L.Gore Associates
Thanks Dr Sharma 50% of type 2 diabetics CDA guidelines target glucose Hypoglycemics lower Hb1Ac; at the price of weight gain Dr Genest; weight gain is associated with HTN and other problems “metabolic syndrome” –cardiovascular risk
93% of diabetic patients ARE NOT well controlled for glucose, cholesterol and blood pressure • Only 7% of adult diabetic patients from NHANES (1999-2000) achieved: • A1C <7% • PA <130/80 mm Hg • Total Cholesterol < 200 mg/dL • Saydah SH et al. JAMA. 2004
The Metabolic Syndrome:Current Perspective Body Size BMI Central Adiposity Insulin Resistance + Hyperinsulinemia GlucoseMetabolism Uric AcidMetabolism Dyslipidemia Hemodynamic Novel RiskFactors • TG • PP lipemia • HDL-C • PHLA • Small, dense LDL • Uric acid • Urinary uricacid clearance • SNS activity • Na retention • Hypertension • CRP • PAI-1 • Fibrinogen • ± Glucoseintolerance CORONARY HEART DISEASE Adapted from Reaven G. Drugs. 1999;58 (suppl):19-20
Does Tight Glycemic Control Reduce Cardiovascular Disease or Mortality? • ACCORD • Intensive group: non-fatal MI, hypoglycemia & weight gain • Trial stopped b/o mortality in intensive group (Why?) • ADVANCE • No difference between intensive & conventional treatment in macrovascular disease or mortality (either overall or CV) • VADT • No differences between intensive & conventional treatment in cardiovascular events • Severe hypoglycemia was strong predictor or CVD events & death
Santayana • “Those who cannot remember the past are condemned to repeat it” George Santayana, The Life of Reason, Vol. 1, 1905
Nicola Scopinaro, Italy 1976 Large gastric pouch Alimentary limb 250 cm Biliopancreatic limb Common channel 50-75 cm Mechanism: mildly restrictive malabsorptive Bilio-pancreatic Diversion 1Scopinaro N. World J Surg 1998;22:936.
Doug Hess, 19881 “Sleeve” gastric pouch Alimentary limb 40% of bowel (250-300 cm) Common channel 50-100 cm (arbitrary) Benefits over BPD: no dumping decreased marginal ulcer better tolerated BPD – with Duodenal Switch 1Hess DS Obesity Surgery 1998;8:267-282.
Laparoscopic Approach Michel Gagner, 19991 “Sleeve” gastric pouch Alimentary limb: 150 cm Common channel: 100 cm Two mechanisms Primarily malabsorptive Somewhat restrictive Duodenal Switch - Today 1Ren, Gagner. Obesity Surg 2000; 10:514-523
Excellent weight loss 73% EWL Long-term follow-up 70% EWL at 15 years 3-4 day stay Complicated procedure Need experienced team Lifelong follow-up Labs q6 months! Supplements 5x day! Resolution of co-morbidities Short and Long-term complications Nutritional complications Protein deficiency Vitamin deficiencies Behavioral changes Diarrhea Odor Duodenal Switch - Results
Henry Buchwald JAMA 2004 Meta-analysis Buckwald JAMA 2004 See also Prachand et al J GI Surg Feb 2010
Manageable side effects Bacterial overgrowth Current Surg 2003; 60: 274-277
Deficiencies are infrequent and correctable 25 years gives no sign of latent damage. 10 years post duodenal switch
Mechanisms of diabetes control after BPD/DS Nutrientsreach the distal ileum within minutes of the ingestion of food and thisstimulates the secretion of GLP-1 by L-cellslocated in this area « Distal mechanism »
Mechanisms of Surgical Treatment of T2D The exclusion of the duodenalnutrient passage may offset an abnormality of gastrointestinalphysiologyresponsible for insulinresistance and type 2 diabetes « Proximal mechanism »
Do you really want to take medications every day for the rest of your life? 4 operations Lap band Sleeve gastrectomy Gastric bypass Duodenal Switch Choosing the operation
Summary - BPD Excellent long-term weight loss (65%) Resolution of most co-morbidities 100% DM, 80% HTN Potential malnutrition or mineral/vitamin deficiency requires intense life-long monitoring Laparoscopic approach still being investigated
Words for the Wise • This operation is not for every patient (nor for every surgeon) • “TRIFECTA” motivated, intelligent patient financial resources ($1000-1500/year) compulsive (12-15 supplements/5 doses)
Super Obese (>50 or >60 BMI) • Band is not be the best option • DS results are superior to GBP long term data does not support sustained weight loss BMI <35 in this group • High risk group Staged procedure may be best option “lower” risk procedure, evaluate patient
diet Overeating Food preservatives Infectious
Algorithm for treating metabolic syndrome? • Lifestyle changes • Diet • Drugs • Lipid lowering agents • Antihypertensive agents • ASA • Anti-diabetic agents • GI-Bariatric Surgery
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