Obesity Management: Lifestyle Modification/Bariatric Surgery.
Obesity and Bariatric Surgery - ACLI
Transcript of Obesity and Bariatric Surgery - ACLI
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Obesity and Bariatric SurgeryMichel M. Murr, MD, FACS
Director of Bariatric CenterChief of Surgery, TGH
Professor of Surgery, USF
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Covidien: educational grants
Disclosure
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Describe classes obesity, and morbidity and mortality.Discuss treatment indications, benefits, risk and successDiscuss surgical options: risk, benefits, monitoring, success,
persistence of benefit, and long-term complications. Delineate issues with modification or reversal of proceduresReview role of bariatric surgery and remission of
comorbidities, diabetes, hypertension, etcDiscuss the value of the timing of the procedureComment the epidemic of childhood obesity
Obesity and Bariatric SurgeryOutline
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Obesity
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Obesity is a chronic, relapsing, multi-factorial, neurobehavioral disease, wherein an increase in body fat results in adverse metabolic, biomechanical, and psychosocial health consequences
ASBP 2015
Definition of Obesity
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ObesityObesity Class BMI (Kg/m2)Normal 18.5-24.9
Overweight 25.0-29.9Mild Obesity I 30.0-34.9Moderate Obesity II 35.0-39.9Severe Obesity III ≥40.0
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Prevalence of Comorbidities in Class III Obesity
0
20
40
60
80
100
OSA HTN HLP ARTH NAFLD T2DM GERD
Perc
enta
ge
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Obesity and Diabetes Trends
Ford et al. Obes Res 2003;11:1223–31
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Obesity and Diabetes240 million diabetics worldwide30% of US population will be diabetic by 202050% do not achieve adequate glycemic control 85% are overweight55% are obese
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Obesity and Sleep Apnea
Murr et al, Surgery 2006
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Obesity and GERD
UGI contrast study: 40% hiatal hernia EGD: >20% abnormalities Symptoms: >30% of patients
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Obesity and Urinary Incontinence
Murr et al, SOARD 2004
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Liver Biopsy in 660 Bariatric Surgery Pts
Portal Inf13%
Fibrosis8%
Steatohepatitis9%
Normal4%Cirrohsis
1%
Steatosis65%
Obesity and NAFLD
Murr et al, Obes Surg 2004
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NAFLD Related Admissions in Children
Koebnick et al JPGN 2009
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Burden of Obesity
Individual Multiple comorbiditiesPoor quality of lifeOut of pocket care costsAbsenteeismStigmatization
Fitch et al., 2013
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Burden of ObesitySocietal 30% of Americans are overweight or obese80% of overweight youth become obese adultsImpacts every resident, employer and government agency in OregonIncremental annual heath care cost of $1,429 (2009 dollars) per person
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Goals of Treatment of Obesity
Improve patient health
Improve patient health
Improve quality of life
Improve quality of life
Improve body weight and composition
Improve body weight and composition
Adult patient with overweight or obesity
Adult patient with overweight or obesity
ASBP 2015
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BMI for initial screening
Waist circumference: low BMI obesity
%Body fat: extremes in muscle mass
Individual Treatment of Obesity
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Mainstay of Treatment Caloric Restriction
Physical ActivityPharmacotherapy
Surgical Procedures
Contemporary Treatment of Obesity
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Interventions for Obesity
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Interventions for Obesity Balanced meals
300-500 calorie deficit
Adherence >3 month is king
5-10% weight loss
Manage recidivism
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Interventions for Obesity Don’t change behavior
Best with diet and exercise
Plan long term use
5-10% weight loss
Monitor for side effects
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Interventions for Obesity Balloons are back
Mixed results
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Interventions for Obesity Bariatric SurgeryMost effective
Rapid weight loss
Inter-disciplinary approach
Requires life long follow up
Manage weight regain
Set realistic expectations
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RYGB vs SG vs Med Rx; n=150STAMPEDE Trial
Schauer NEJM 2012
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ResultsWeight Loss Expectations
0%10%20%30%40%50%60%70%80%90%
100%
Dream Happy Accept Disappoint
%E
WL
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Prevalence of Comorbidities in Bariatric Patients
0
20
40
60
80
100
OSA HTN HLP ARTH NAFLD T2DM GERD
Perc
enta
ge
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Bariatric SurgeryResolution of Comorbidities after RYGB (90% F/U)
0
20
40
60
80
100
OSA
HTN
ArthGERD
Diabete
s UIDys
fertili
tyFibro
sis
Perc
enta
ge
Preop Postop
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Swedish Obesity Subjects (SOS) Study
Sjostrom: NEJM; 2004
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Weight Loss After Gastric Bypass
-100
-80
-60
-40
-20
0
0 5 10 15
Time After Surgery (years)
Perc
ent C
hang
e in
Exc
ess
Body
Wei
ght
Pories et al., 1995
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Bariatric Surgery
Sjöström L, NEJM 2007
Swedish Obesity Subjects (SOS) Study
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Types of Bariatric Surgery
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Types of Bariatric Surgery
Lap-Band: 10 year dataConverted to bypass 25%Band in/no wt loss 25% Undetermined 40%Weight loss 10%
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Types of Bariatric Surgery
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Types of Bariatric Surgery
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Bariatric Procedures are Effective But Not Equal
30 Day Mortality
0.01 0.1 1 10
Banding
RYGB
DS
10%
50%
100%
Dia
bete
s R
esol
utio
n R
ate
Dia
bete
s R
esol
utio
n R
ate
Exce
ss W
eigh
t Los
sEx
cess
Wei
ght L
oss
Sleeve
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3941
44
5052535450
0
100
200
300
400
500
600
-30 -24 -4 0 1 2 5 11
Time from Surgery (months)
Glu
cose
(mg/
dL)
02468101214161820
Hgb
A1c
(%)
Glucose (mg/dL) BMI (kg/m2) HgbA1c (%)
The Rise and Fall of Glucose
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Medical Vs Surgical Treatment of Diabetes
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STAMPEDE Trial: RYGB vs SG vs Med 3 yr; n=150
Schauer, NEJM 2014
Age 48±8 yrWomen 68%HbA1C 9.3±1.5BMI 36±4F/U 3 yr 91%
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STAMPEDE Trial: RYGB vs SG vs Med 3 yr; n=150
* p<0.01; Schauer NEJM 2014
RYGB SG MedHbA1C <6.0 38% 24% 9%*Wt loss (%) 25±9 21±9 4±8*
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Hormonal Mechanisms of Bariatric Surgery
Gastric Sleeve: may change ghrelin levels
Gastric Bypass: changes ghrelin and GLP-1
Hepatic insulin sensitivity: neural vs GLP-1 independent
Paradoxical increase in RMR
Reduced inflammation in adipose tissue
Other neural/gut/brain pathways
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If it is not the stomach only?
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Lipotoxicity Affects Liver FunctionIncreases hepatic insulin resistanceDecreases insulin clearanceIncrease hepatic gluconeogenesisIncrease in VLDL output
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Improvement in SteatosisPre-Bariatric Post-Bariatric
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Improvement in SteatohepatitisPre-Bariatric Post-Bariatric
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Improvement in FibrosisPre-Bariatric Post-Bariatric
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Bariatric Surgery Improves NAFLD
SteatosisResolved 63%Persisted 27%
Worse 2%
SteatohepatitisResolved 90%
Same 5%Worse 0%
FibrosisImproved 56%
Same 25%Worse 16%
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The Anti-Diabetic Effects of Diversionary Procedures
Food diverted from excluded stomach
Decrease inflammatory cytokine form omentum
Early delivery of undigested nutrients
GLP-1
Hepatic Insulin Sensitivity
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Bariatric Surgery for T1DM
Kirwan et al Diab Care 2016
Emerging Knowledge17 pooled studies
107 patients
Gastric bypass in 65%
Appropriate weight loss
HbA1C: 8.4 vs 7.9
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Summary of Evidence7 RCT + high quality non RCT818 patients1-3 yr. follow upSurgery >>> Medical: OR : 22
Bariatric Surgery for BMI< 35
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STAMPEDE Trial: RYGB vs SG vs Med 3 yr; n=150
* p<0.01; Schauer NEJM 2014
RYGB SG MedHbA1C <6.0 38% 24% 9%*Wt loss (%) 25±9 21±9 4±8*
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Types of Bariatric Surgery
Our Recommendations for AdultsGastric Banding: not recommendingGastric Sleeve: non-diabetic or BMI<50Gastric Bypass: all BMI or diabetic
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Types of Bariatric Surgery
Our Recommendations for AdolescentsGastric Banding: not recommendingGastric Sleeve: girls, non-diabetic, BMI<50Gastric Bypass: boys, all BMI or diabetic
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Nutrition in Bariatric PatientsPre-op Deficiencies:
B12IronVit D
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Nutrition in Bariatric PatientsPost-op Deficiencies:B12 ThiamineFolateIronVit DVit A
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Nutrition in Bariatric PatientsSpecific Clinical Scenarios: Failure to thrive, chronic pain, muscle loss
- check for protein-calorie malnutrition- imaging for anatomical problems- intense diet and psychological intervention- feeding tubes
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Who should I refer for bariatric surgery?
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Who should I refer for bariatric surgery?BMI: >35, no upper BMI limitAge: >16 years, no upper age limitStable mental healthWillingness to participateNo substance abuse
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Early Referral vs Last Resort
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Swedish Obesity Subjects (SOS) Study
Sjostrom: NEJM; 2004
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Natural History of Type 2 Diabetes
Ramlo-Halsted et al. Prim Care. 1999;26:771–789.
RelativeActivity
Glucose
Yrs from Diabetes Diagnosis–10 –5 0 5 10 15 20 25 30
-10 -5 0 5 10 15 20 25 30
Postprandial glucoseFasting glucose
Insulin resistance —hepatic and peripheralInsulin level
Beta-cell function
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-6 mo
Information Session
Bariatrician
Referral
Plastic Surgery Orthopedics
Chronic Disease Model
Diet Classes
Bariatric Surgery
10+ yr
Attend Support Group
Pulmonary Cardiac
Additional Psych/Diet
2 yr
Continue Life-Long F/U
Surgery
TGH+USF Bariatric CenterPatient Flow
DietitianPsychologistEx Phys
ENDO Surgery
AccreditationQIP
Maintenance Bariatrician
Follow up Surgery
DiagnosticsRetail
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Future DirectionsBody Weight Set Point
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Body Weight Set Point: Obesity
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Body Weight Set Point after RYGB
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Why bariatrics for adolescents now?
Commonalities between adults and adolescents
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Why bariatrics for adolescents now?
Progressive epidemic of pediatric obesity with “adult” diseasesSignificant psychosocial impairmentLimited effectiveness of non-surgical optionsIncreasing safety and successful outcomes of adolescent bariatric surgery
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NAFLD–related Admissions in Children
Koebnick et al JPGN 2009
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Prevalence of CVD Risk FactorsTEEN-LABS
JAMA Ped 2015
Age: 17±2 years BMI: 50±3.
Fasting hyperinsulinemia (74%)Impaired fasting glucose levels (26%)Diabetes mellitus (14%). Increased high-sensitivity CRP (75%), Dyslipidemia (50%)Hypertension (49%)
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Psychosocial risks: TEEN-LABS
141 adolescents evaluated for bariatric surgery 1/3 reported internalizing symptoms1/5 reported internalizing symptoms
Psychopathology was associated with family dysfunction, eating pathology, or family composition.
Obesity Epub May 9, 2015