690 likes | 1.68k Views
Morbid Obesity. By Prof Dr WALEED IBRAHIM. Definition . O besity has been defined as excess body fat relative to lean body mass. The most widely accepted measure of obesity is the body mass index (BMI). BMI= Patient’s weight in kg / square of patient’s height in meters (kg/m²).
E N D
Morbid Obesity By Prof Dr WALEED IBRAHIM
Definition • Obesity has been defined as excess body fat relative to lean body mass. • The most widely accepted measure of obesity is the body mass index (BMI). • BMI= Patient’s weight in kg / square of patient’s height in meters (kg/m²). • A normal BMI ranges from 18.5 to 24.9 kg/m²
Classification • BMI 25-29.9 = overweight. • BMI ≥30 = obesity. • BMI ≥35 = severe obesity. • BMI ≥40 = morbid obesity. • BMI ≥45 = super obese.
AETIOLOGY OF OBESITY GENETIC ( rare ) A. SYNDROMES INDUCING OBESITY: • Prader- Willi : Hypotonia, Hyperphagia, M R, Facial features • Laurence- Moon : Ret. Pig, M R , Sp. Pplegia, Hypogonad • Bardet-Biedl: Polydactyly, Renal failure B. CHROMOSOMAL DEFECTS:
ENVIRONMENTAL • NUTRITIONAL : Intra-uterine, Infancy, Dietary. • PHYSICAL INACTIVITY : TV., Internet, Lifestyle, Technology. • TRAUMA : NEUROLOGICAL : Post op., Head injuries. PSYCHOLOGICAL : Stresses, Abuse…. • MEDICATIONS : Steroids, Psychotropic drugs. • SOCIAL : Economic, Ethnic.
NEURO-ENDOCRINE • HYPOTHALAMIC-PITUITARY • GONADAL : Polycystic Ovary • ADRENAL : Cushing • THYROID • PANCREATIC : Hyperinsulinaemia
METABOLIC SYNDROME COMBINATION OF : • OBESITY ( Esp. CENTRAL ) + 2 of : • HT. • DM. • DYSLIPIDEMIA
AHA • The American Heart Association and the National Heart, Lung, and Blood Institute recommend that the metabolic syndrome be identified as the presence of three or more of: • Elevated waist circumference:Men —Equal to or greater than 40 inches (102 cm)Women — Equal to or greater than 35 inches (88 cm) • Elevated triglycerides:Equal to or greater than 150 mg/dL
Reduced HDL (“good”) cholesterol:Men — Less than 40 mg/dLWomen — Less than 50 mg/dL • Elevated blood pressure:Equal to or greater than 130/85 mm Hg • FBS equal or greater than 100mg/dL
Complications of obesity • Morbidly obese patients are classified according to area of main fat mass: • Peripheral (Gynecoid) obesity: associated with degenerative joint disease and venous stasis in the lower extremities. • Central (Android) obesity: associated with the highest risk of mortality related problems due to the “Metabolic Syndrome” as well as increased intra-abdominal pressure.
Non surgical treatment • Dietary therapy • Physical activity therapy • Drug therapy • Behavioural therapy
Surgical management Candidates for surgery • BMI ≤ 40 Kg/m² or ≤ 35 Kg/m² with significant cormobidities. • Failure of non surgical weight loss programs. • Capability of tolerating surgery. • Absence of endocrine disorders that can cause massive obesity. • Psychological stability with supportive social environment.
Age less than 60 years • Basic understanding of how obesity surgery causes weight loss. • Realization that surgery itself does not guarantee weight loss • Absence of active alcohol and drug abuse. • Commitment to post-operative follow up.
Bariatric Surgical Procedures 1- Restrictive procedures: A)Vertical banded gastroplasty (VBG)
2- Malabsorptive procedures : A) Roux en Y Gastric bypass(RYGBP)
Outcome of Bariatric Surgery • The aim of bariatric surgery is to induce weight loss that is sufficient to reduce obesity-related morbidities to acceptable levels. • Loss of visceral fat is associated with improved insulin sensitivity and glucose metabolism , also reduces intra-abdominal pressure and this change may result in improvement in urinary incontinence, gastroesophageal reflux, systemic hypertension, venous stasis disease, and hypoventilation.
70-80% IMROVEMENT OF CO-MORBIDITIES : - TYPE 2 DM. - HYPERTESION. - DYSLIPIDAEMIA. - HYPERURICAEMIA. - SLEEP APNOEA. - CARDIAC RISK. - CANCER RISK. - GERD. - PCOS.
QUALITY OF LIFE: - SOCIAL. - WORK. - SEXUAL. - PSYCHOLOGICAL • IT WAS FOUND THAT THESE POSITIVE CHANGES START (& PERSIST) AS EARLY AS WHEN 10% EWL OCCURS.
FOLLOW UP • 1 st, 3 rd,6 th, 12 thMONTH POSTOPERATIVELY, THEN ANNUALLY. • DO NOT FORGET: -ELECTROLYTES. -B. SUGAR. -RENAL FUNCTIONS. -LIVER FUNCTIONS. -TRANSFERRIN. - LIPID PROFILE.