bariatric surgery 2013 may
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Dr Sreejoy PatnaikMember OSSI,IFSO,SAGES
Minimal Access , Bariatric & Metabolic Surgery
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General Surgeon -1991 Laparoscopic Surgeon -1993 Endoscopic Surgeon- 1998 Single Incision Lap. Surgeon - 2010 Bariatric Surgeon -2010 NOTE Surgeon -2012 VAAFT Surgeon-2012 Metabolic Surgeon -2013 What Next ???
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Kancherla Ravindranath
August 8th 1992 did the first lapchole in Orissa
With help of Dr Vinay Taunk at SCBMCH & at SHANTI
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MANMOTH TASK
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Obesity associated conditionsDiabetes
Hypertension
Sleep apnea
Congestive heart failure
Hyperlipidemia
Stroke
Coronary Artery Disease
Osteoarthritis
Gastroesophageal Reflux Disease
Non-alcoholic fatty liver
Psychological disturbances
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Cardiovascular: CAD, HTN, CHF, LVF, Venous stasi ulcers, DVT, Hyperlipidaemia
Pulmonary: OSA,OHS,PAH, AsthmaEndocrine: Insulin Resistance, Type 2 DM, PCOSHaemopoietic: DVT, Pulmonary EmbolismG.I /Hepatobiliary: GERD, NAFLD, Hernias, GallstonesGenitourinary: Stress incontinence, UTIObstetrics/Gynecology: Infertility, Miscarriage, Fetal
abnormalities, Infant mortality, Gestational DM
Musculoskeletal: Degenerative Joint diseases, Gout, Plantar fascitis, Carpel T.S
Neurologic/Psychiatric: Stroke, Pseudomotor cerebri, Depression, Anxiety
Cancer: Esophagus, Pancreas, Colon & Rectum, Breast, Endometrium, Kidney, Thyroid, GB
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BMI ≥ 35 kg/m²: Risk of death ≈ 2.5 times greater than if BMI
of 20-25 kg/m² BMI ≥ 40 kg/m²:
Risk of death 10 times greater
Obesity
2nd leading cause of preventable premature death in US (smoking)
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Global epidemic of obesity Bariatric surgery is the only effective and
sustained treatment for morbid obesity Bariatric surgery resolves diabetes and
other co-morbidity and saves lives Laparoscopic surgery has significant
advantages over open procedures Surgical morbidity and mortality are very
low in experienced units
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Open Surgery (big cuts)
Laparoscopic Surgery (key-hole sized cuts)
Natural Orifice Surgery (no cuts)
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Consensus Guidelines 2003 Surgical therapy should be considered for
individuals who: Have a BMI of greater than 40 kg/m² OR Have a BMI greater than 35 kg/m² with
significant comorbidities AND Can show that dietary attempts at weight
control have been ineffective
Derived from American Society of Bariatric Surgery website: www.asbs.org
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Bariatric Surgery
Diet
Exercise
Behavior Modification
“Postoperative care, nutritional counseling, and surveillance should continue for an indefinitely long
period.”
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Obesity related to a metabolic or endocrine disorder
H/O substance abuse or major psychiatric problem
High risk patients Women who want to become
pregnant = 18 months
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1. PREDOMINANTLY RESTRICTIVE 1. PREDOMINANTLY RESTRICTIVE PROCEDURESPROCEDURES
2. PREDOMINANTLY MALABSORBTIVE 2. PREDOMINANTLY MALABSORBTIVE PROCEDURESPROCEDURES
3. MIXED OR COMBINATION 3. MIXED OR COMBINATION PROCEDURESPROCEDURES
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By creating a small gastric pouch & a degree of outlet obstruction leading to delayed gastric emptying. The goal - reduce oral intake by limiting gastric volume,
-produce early satiety, and -leave the alimentary canal in continuity, minimizing
the risks of metabolic complications
1.VERTICAL BANDED GASTROPLASTY
2.ADJUSTABLE GASTRIC BANDING (LAGB )
3. SLEEVE GASTRECTOMY
4.GASTRIC PLICATION
5. INTRA GASTRIC BALLOON (GASTRIC BALLOON)
RESTRICTIVE PROCEDURES:
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-Malabsorption is achieved by creating a short gut syndrome
-Distal mixing of bile and pancreatic juice with ingested nutrients thereby reducing absorption..
-No longer recommended due to their potential hazard to cause serious nutritional deficiencies.
1.BILIOPANCREATIC DIVERSION
2. THE JEJUNAL-ILEAL BYPASS
3. ENDOLUMINAL SLEEVE
4. MINI GASTRIC BYPASS
MALABSORPTIVE PROCEDURES
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MIXED OR COMBIATION PROCEDURES:
1. GASTRIC BYPASS ROUX-EN-Y ( RYGBP)
2. SLEEVE GASTRECTOMY WITH DUODENAL SWITCH
3. IMPLANTABLE GASTRIC STIMULATION
The following procedures combine restrictive and malabsorptive approaches. By adding malabsorption, food is delayed in mixing with bile and pancreatic juices that aid in the absorption of nutrients.
The result is an early sense of fullness, combined with a sense of satisfaction that reduces the desire to eat.
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LABORATORY EVALUATION:Basic chemistry panel, full blood count, thyroid function tests. Serum cortisol, urine cortisol, lipid profile, vitamin (A, B1, B6, B12, C).Serum Insulin, C-Peptide.
UPPER ENDOSCOPY:Rule out inflammatory ulcerous gastric pathology, search and treat H pylori infection when present.
ULTRASOUND OF THE ABDOMEN:To rule out cholelithiasis, which would indicate cholecystectomy along with the gastric sleeve.
PREOPERATIVE EVALUATION
CARDIOVASCULAR/RESPIRATORY EVALUATION:Exclude any contraindications to anesthesia by TMT, Echo, PFT, ABG , CXR etc.
PSYCHIATRIC EVALUATION:To rule out any behavioral abnormalities that would contraindicate limited food intake.
ENDOCRINE EVALUATION: Rule out an endocrine abnormality as the etiology of morbid obesity.DENTAL EVALUATION
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Armamentarium in OT
INSTRUMENTS TELESCOPES,TROCARS
LIVER RETRACTORS ENDO-GIA STAPLERS
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LED MARTIN LIGHTS
MINDRAY BARIATRIC TABLE
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VALLEYLAB STERRAD
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LIGASURE HARMONIC
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EXTRA LONG TROCARS
OPTI-VIEW TROCARS GASTRIC CALIBRATION TUBE
OPTICAL TROCARS & GCT
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WARM BLANKET- BAIR HUGGER
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SERIAL COMPRESSION DEVICE
TYCO – KENDALL COMPRESSION DEVICE
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Dr. Cadiere 1992 Technically simple Purely restrictive
Decrease hunger Early satiety Food aversion
Adjustment to stoma diameter
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LAPAROSCOPIC ADJUSTABLE GASTRIC BANDING (LAP BAND SURGERY/ LAGB)
Restrictive Procedure
An inflatable silicone BAND is placed around the top portion of the stomach, to form a small stomach pouch & sewed .
This band is connected to a tube that leads to a port above the abdominal muscles placed below the skin (FILL – PORT).
During follow up visits, we inject or remove saline solution to make the band tighter or looser.
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This Band in the stomach and induces weight-loss in 3 ways:
1. The small stomach pouch causes a sensation of fullness
2. “Squeezing of the stomach pouch like an hour glass prolongs the sensation of fullness.
3. Suppresses appetite by central action.
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• Perforation of Stomach
• Mal positioning
• Abdominal Pain
• Heartburn
• Vomiting
• Inability to Adjust the Band
• Failure to Lose Weight
• Slippage
• Gastric Erosion
• Dilated Esophagus
• Infection of System
• Fatigue or malfunction
Complications of Gastric Lap-Band
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Sleeve gastrectomy is a procedure in which the stomach is reduced to about 25% of its original size, by surgical removal of a large portion of the stomach along the greater curvature. This is done by using surgical staplers to form a sleeve or a tube with a banana shape.
A bougie or GCT between 36 - 40 Fr is used with the procedure .
Ideal approximate capacity of the stomach after the procedure is about 30- 60 ml pouch
Sleeve Gastrectomy
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TEN STEPS OF LSGTEN STEPS OF LSG
1.1.Assembly of instruments, in order of Assembly of instruments, in order of useuse
2.2. OT set up and Trocar PositionOT set up and Trocar Position3.3.Liver Retraction –using Nathansons Liver Retraction –using Nathansons
Liver RetractorLiver Retractor4.4.Gastrolysis of greater curvature- distal Gastrolysis of greater curvature- distal
to prox. Upto> of His.to prox. Upto> of His.5.5.Resection of stomach by Stapling – Resection of stomach by Stapling –
starts from 4 cm distal to pylorusstarts from 4 cm distal to pylorus6.6.Suturing for staple line reinforcementSuturing for staple line reinforcement7.7.Leak test- Methylene blue, air or UGIELeak test- Methylene blue, air or UGIE8.8.Extraction of specimen- fish tail Extraction of specimen- fish tail
techniquetechnique9.9.Closure of Ports- by needle passer.Closure of Ports- by needle passer.
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DONE UNDER G.A
5 TO 6 PORTSThe benefits are:
•Less Pain
•Quicker recovery and return to normal activity•Fewer complications•Less noticeable scar•Shorter hospital stay
1.1.Assembly of instruments, in order of useAssembly of instruments, in order of use
2.2. OT set up and Trocar PositionOT set up and Trocar Position
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1.1.Liver Retraction –using Nathansons Liver Retraction –using Nathansons Liver RetractorLiver Retractor
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1.1.Gastrolysis of greater curvature- distal Gastrolysis of greater curvature- distal to prox. Upto> of His.to prox. Upto> of His.
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1.1.Resection of Resection of
Stomach by Stomach by Stapling – starts Stapling – starts from 4 cm distal to from 4 cm distal to pyloruspylorus
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Stomach stapling ends up at angle of His
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Suturing for staple line Suturing for staple line reinforcementreinforcement
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Leak test- Methylene blue, Leak test- Methylene blue, air or UGIEair or UGIE
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SLEEVE GASTRECTOMY
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The Roux-en-Y gastric bypass (known simply as the LRYGBP) is the most commonly performed procedure. It primarily causes weight loss by restricting thefood intake, however there is more amount of mal absorption that occurs with this operation.
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Bariatric surgery represents the main option for substantial and long-term weight loss in morbidly obese subjects..
Two hypotheses have been proposed to explain the early effects of bariatric surgery on diabetes--
The Hindgut hypothesis theory- Diabetes control results from the more rapid delivery of nutrients to the distal small intestine, thereby enhancing the release of hormones such as glucagon-like peptide-1 (GLP-1) or Incretins.
The foregut hypothesis theory – Exclusion of the proximal small intestine reduces or suppresses the secretion of anti-incretin hormones, leading to improvement of blood glucose control as a consequence increases GLP-1 plasma levels which stimulate beta cells to produce insulin secretion and suppress glucagon secretion, thereby improving glucose metabolism.
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The stomach is stapled into 2 pieces, one small and one large. The small piece becomes the “new” stomach pouch.
The larger portion of the stomach stays in place, however will lie dormant for the remainder of the patient’s life.
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• The small intestine (the jejunum) is divided using a surgical stapler
Approx. 70 cm from the DJ Junction.
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Y- LIMB/ BP LIMB
• The end of the Roux limb is then attached to the newly formed stomach pouch .
• The Roux limb carries food to the distal intestine.
• The Y limb or BPD limb carries digestive juices from the pancreas, gall bladder, liver and duodenum to the intestines
• The food and the digestive juices mix where the Roux limb and Y limb meet much below say 100-170 cm from DJ
Roux limb or alimentary limb
100-150 cmBPD LIMB OR Y
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“Gold Standard” 80% of bariatric
proc. Restrictive and
Malabsorptive: Reduced calorie
intake Macronutrient
malabsorption
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LAP GASTRICT BYPASS
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Staple line disruption (revision procedure..)
Bougie stapling Bleeding from the staple line Bleeding from gastric or short gastric
vessels Bleeding from the spleen Exposure difficulty in supersuper obese
patients
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ICCSSG NEW YORK 2007
Staple line leakage Bleeding from the staple line Gastric stenosis
Late complications Marginal ulcer GERD ++ Gastric dilatation and weight regain
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1. Pulmonary Embolism
2. Myocardial Infarction
3. Anastomotic Leak 4. Management of
Leaks 5. Bleeding 6. Wound Infection 7. Small Bowel
Obstruction 8. Band Obstruction 9. Dumping
Syndrome 10. Stomal Stenosis
11. Esophageal Dilation
12. Band Slippage 13. Band Erosion 14. Marginal Ulcers 15. Cholelithiasis 16. Gastro-gastric
Fistula 17. Malabsorption 18. Procedure
Failure
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N=1041 year post op Number
Pre-op % Worse% No
change
% Improve
d%
Resolved
Osteoarthritis 64 2 10 47 41
Hypercholesterolemia
62 0 4 33 63
GERD 58 0 4 24 72
Hypertension 57 0 12 18 70
Sleep Apnea 44 2 5 19 74
Hypertriglyceridemia
43 0 14 29 57
Peripheral Edema 31 0 4 55 41
Stress Incontinence 18 6 11 39 44
Asthma 18 6 12 69 13
Diabetes 18 0 0 18 82
Average 1.6% 7.8% 35.1% 55.7%
90.8% Improved or Resolved Schauer, et al. Ann Surg 2000 Oct;232(4):515-29
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Rapid decrease in serum blood sugar Decrease in medication requirements 66% to 75% complete resolution Increased insulin sensitivity Inhibits progression of disease Swedish Obese Subject Trial:
Reduced relative risk by factor of 30 compared to medically treated population
1. Buchwald H, Avidor Y, Braunwald E, Jensen MD, Pories W, Fahrbach K, et al. Bariatric surgery: a systematic review and meta-analysis. JAMA 2004;292: 1724-37.
2. Pories WJ, Swanson MS, MacDonald KG, Long SB, Morris PG, Brown BM, et al. Who would have thought it ? An operation proves to be the most effective therapy for adult-onset diabetes mellitus. Ann Surg 1995;22:339-50, discussion 350-2.
3. SjostromL, Lindros AK, Peltonem M, Torgerson J, Bouchard C, Carlsson B, et al. Lifestyle, diabetes, and cardiovascular risk factors 10 years after bariatric surgery. N Engl J Med 2004;351: 2683-93.
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70% complete resolution 50% reduced medications Swedish Obese Subject Trial: 2
years post opDecreased relative risk of new
onset HTN = 10 Time interval for resolution not
cleared1. SjostromL, Lindros AK, Peltonem M, Torgerson J, Bouchard C, Carlsson B, et al. Lifestyle, diabetes, and
cardiovascular risk factors 10 years after bariatric surgery. N Engl J Med 2004;351: 2683-93.
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70% prevalence in gastric bypass pts
80% improvement No more CPAP Decreased pCO2 Increased pO2
1. Dixon JB, et al. Predicting sleep apnea and excessive day sleepiness in the severity obese: indicators for polysomnography. Chest 2003;123:1134-41.
2. Sugerman HJ, et al. Gastric surgery for respiratory insufficiency of obestiy. Chest 1986;90:81-6.
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Non-alcoholic fatty liver: Resolution of steatosis Improved liver contour
Osteoarthritis: 50% reduced medication intake Decreased joint stress from weight loss Delayed operative joint intervention
Depression: High prevalence in obese Decreased medication use
1. Clark JM, et al. Roux-en-Y gastric bypass improves liver histology in patients with non-alcoholic fatty liver disease. Obes Res 2005;13:1180-6
2. Abu-Abeid S, et al. The influence of sugically-induced weight loss on the knee joint. Obes Surg 2005;15:1437-42.3. Sarwer DB, et al. Psychiatric diagnoses and psychiatric treatment among bariatric surgery candidates. Obes Surg
2004;14:1148-56.
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Endoscopic plication of the pylorus with laparoscopic gastrojejeunostomy
N.O.T.E.S SILS ROBOTIC SURGERY
1. Kantsevoy SV, et al. Technical feasibility of endoscopic gatric reduction: a pilot study in a porcine model. Gastrointes Endosc 2007;65:510-3.
2. Deviere J, et al. Safety, feasibility and weight loss after trans-oral gastroplasty (TOGA): first human multicenter study. Surg Endosc 2007;21(suppl 1): S303.
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Revisional Surgery
Endoscopic Procedures
Gastric Neuromodulation
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Durable
Excess Weight Loss > 50%
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Technique Product
Sclerotherapy
Suturing EndoCinch (Bard)
Spiderman (J&J)
Anchors ROSE, POSE (USGI)
T-Fasteners StomaphyX (Endogastric Solutions)
Staplers TOGa (Satiety Inc.)
Sleeves EndoBarrier (GI Dynamics)
ValenTx
Endoscopic Bariatric Procedures
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Class 3 & Super-Obesity: Conventional Bariatric Surgery e.g.
laparoscopic gastric bypass
Less Severe Obesity - Classes 1 and 2
Gastric Electrical Stimulation
Endoscopic Bariatric Procedures
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Research Ranking scores using a combination of factorsTypes of Bariatric Surgery
Category Average Long Term Excess Weight Loss (approx. %)
Complication Rate Research Ranking* (and reason if below ‘A’
LGB Combination (primary restrictive
50 to 70% Up to 15% A
Lap Gastric Banding Restrictive 25% to 80% Up to 33% A
BPD/DS Mal absorptive 65% to 75% Up to 24% A
Vertical Banded Gastroplasty
Restrictive 50% TO 60% Up to 21% B
Vertical Sleeve Gastrectomy
Restrictive 65% to 75% Up to 10% B
Mini Gastric Bypass Surgery
Combination (primary restrictive
60% to 70% Up to 8% C
TGVR Restrictive Needs more research n/a C
TOGA System Restrictive n/a n/a
Endobarrier Endoluminal Lining
Mal absorptive n/a n/a D
Implantable Maestro System
Neither restrictive nor mal absorptive; electrical impulses said to affect hunger
n/a n/a
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OUR SERIES OF PATIENTS
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THE FUTURE –WHO KNOWS THIS DAY MIGHT COME SOON
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THANK YOU