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Supporting the Sunshine Coast for over 20 years, Dr Ian Baxter and his multi-disciplinary team at Sunshine Coast Medical Weight Loss Centre work in partnership with you and your patients to help them achieve positive long-term health outcomes.
Bariatric surgery is a recommended treatment option for obese people who have unsuccessfully tried to lose weight for some time using supervised diet, exercise or other behaviour modification programs.
Typically, these are people over 16 with a BMI of 35-40 or above, including those with existing co-morbidities or at risk of developing serious weight-related health conditions.
Rather than an easy way out, bariatric surgery is an evidence-based method of managing obesity when all other methods have failed. To be successful long-term it requires motivated patients who are willing to commit to ongoing lifestyle and mindset changes.
Dr Baxter and his team of bariatric GPs, dietitians, psychologists and a Bariatric Nurse Educator operate under one roof at Sippy Downs, making it easy for your patients to access all the services they need in one convenient location. Telehealth appointments are also available for people living outside of the area.
Dr Baxter performs surgery at Buderim and Sunshine Coast University Private Hospital, including Gastric Banding, Gastric Sleeve, Mini-Bypass and bariatric revisional surgery.
Dependant of the person and the procedure, individuals can expect:
ADJUSTABLE GASTRIC BAND | SLEEVE GASTRECTOMY | ROUX-EN-Y GASTRIC BYPASS | |
DESCRIPTION | Adjustable silicone band placed just below the gastroesophageal junction, applying gentle pressure that suppresses hunger. Level of restriction can be adjusted by varying the amount of fluid placed in the band | Greater portion of the fundus and body of the stomach is removed. Gastric volume is reduced by about 80% |
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MEAN TOTAL BODY WEIGHT LOSS | 17 – 30% | 20 – 30% | 25 – 35% |
MORTALITY RATE AT 30 DAYS | 0.03 – 0.1% | 0.3 – 0.5% | 0.1 – 0.4% |
MORBIDITY AT 1 YEAR | 4.6% | 10.8% | 14.9% |
NUTRITIONAL CONCERNS | Low (deficiencies in iron, vitamin B12, folate, thiamine) | Moderate (deficiencies in iron, vitamin B12, folate, calcium, vitamin D, thiamine, copper, zinc) | Moderate (deficiencies in iron, vitamin B12, folate, calcium, vitamin D, thiamine, copper, zinc) |
ADVANTAGES |
| Very effective with good mid-term weight maintenance |
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DISADVANTAGES & KEY COMPLICATIONS | Highest long-term re-operation rate Gastric pouch dilatation, erosion of band into the stomach, leaks to the adjustable gastric band system, weight regain. |
| Staple line leak, dumping, stomal ulcer, intestinal obstruction, gallstones, nutritional deficiency, altered alcohol metabolism, weight regain |
We tailor assessment according to the individual’s risk factors. Common clinical observations and investigations include;
History:
Weight history (eg age of onset of obesity, minimum and maximum weight), previous weight loss attempts (including diets, medications, previous weight-loss surgery), triggers for weight gain/regain. Obesity-related comorbidities, family history, medication history. Current lifestyle: dietary behaviour and physical activity levels; work and home environment, psychosocial support.
Physical Examination:
Weight, body mass index, blood pressure. Signs of specific causes of obesity (eg hypothyroidism, Cushing’s syndrome).
Investigations:
Full blood count, urea and electrolytes, liver enzymes, coagulation screen, fasting lipids and glucose, HbA1c.
In known T2DM, C-peptide for pancreatic beta cell function.
Nutrition: ferritin, vitamin B12, folate, 25-OH vitamin D and Zinc.
For individuals with specific risks: ECG, echocardiogram or cardiology referral. Endoscopy for GORD, upper GI ultrasound for NASH or gallstones. Polysomnography for sleep apnoea.
Psychological:
Assess commitment, motivation, readiness to change, as well as understanding and expectations of surgery. Psychiatry review if known or suspected history of psychiatric illness or substance abuse.
We welcome referrals that include essential investigations as this can expedite the assessment process, however it is not necessary.
Once a decision has been made for bariatric–metabolic surgery, a series of detailed assessments would be organised.
Nutritional assessment:
Every patient will see one of the dietitians at the SCMWLC prior to surgery. In this session, they will be prepared for what the journey ahead will look like from a nutritional perspective. A state of high-energy malnutrition is often observed in clinically severe obesity, which is masked by ample energy excess. Up to 80% of bariatric–metabolic surgery candidates have micronutrient deficiencies pre-operatively, and appropriate nutritional assessment allows deficiencies to be corrected prior to surgery.
Identifying and optimising complications prior to surgery:
Pre-operative assessment also includes identification and optimisation of obesity-related complications, with the aim to improve peri-operative safety and outcomes after surgery.
Psychological assessment:
Prior to surgery, thorough assessment of the patient’s behaviour, home and work environments, family dynamics, and their ability to incorporate nutritional and lifestyle changes should be conducted. Incorrect beliefs and unrealistic expectations on what the procedure can achieve must be rectified. Depression, anxiety and other psychiatric disorders are prevalent in individuals considering bariatric–metabolic surgery.
Anatomical assessment:
As part of the pre-operative assessment, evaluation of the upper gastrointestinal anatomy may be performed, depending on factors such as the presence of gastrointestinal symptoms or type of surgery being considered.
The team at SCMWLC have a very strong presence in the patient’s journey post-surgery.
The team will do a post-operative phone call with the patient to ensure they are travelling well and to answer any questions or concerns they may have coming into the weekend.
Post operative appointment with Dr Baxter where he will assess the wounds and how the patient is.
Appointment with the Dietitian where they will prepare the patient for the soft stage.
Appointment with the Dietitian where they will prepare the patient to move to full food.
Appointment with both the Dietitian and Dr Baxter to assess their weight loss and how they are travelling.
Appointment with Psychologist and Dietitian. This is a very important appointment where the team organise full bloods to be taken prior to. The dietitian will assess their blood levels to make sure they are not lacking anything and that they are getting in enough protein and having a healthy relationship with food. The psychologist will meet up with the patient at 6 months, as this appears to be the time when patients experience “the head games”.
The Bariatric GP will follow up with the patient and organise full bloods to ensure they are not malnourished.
Maintenance of physical activity post bariatric–metabolic surgery aids in maintaining muscle strength, enhanced fitness and greater weight loss. Moderate-intensity physical activity of at least 150 minutes per week and a future target of 300 minutes per week (including strength training) two to three times per week is recommended.
In patients with T2DM, adjustments to the antidiabetes agents are frequently necessary in the early postoperative period to prevent hypoglycaemia. Insulin secretagogues (ie sulphonylureas, metiglinides) should be discontinued and insulin doses reduced as appropriate. Metformin may be continued postoperatively and withdrawal considered if stable non-diabetic glycaemia (ie glycated haemoglobin in the normal range) is demonstrated. Screening for diabetes complications should continue even with diabetes remission, at least for the first five years.
The effect of weight loss on lipids, especially low-density lipoprotein, is variable and generally modest. Therefore, lipid-lowering medications should not be discontinued unless clearly indicated. Although blood pressure often improves with weight loss. Antihypertensives should be actively titrated on follow-up. Medications with a narrow therapeutic index (eg warfarin, digoxin, lithium, antiepileptic medications) also require close monitoring and titration because of altered oral drug bioavailability following bariatric–metabolic surgery.
Surgical complications (eg leaks, perforations, obstruction, infection, haemorrhage) | Abdominal pain, tachycardia, breathlessness, drop in haemoglobin |
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Hypoglycaemia (usually in patients with pre-existing diabetes) | Hypoglycaemia (usually in patients with pre-existing diabetes) Sweating, dizziness, headaches, palpitations Low capillary blood glucose on testing |
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Dumping syndrome after Roux-en-Y bypass | Abdominal pain, diarrhoea, nausea, flushing, palpitations, sweating, agitation, and syncope after meals rich in simple carbohydrates |
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Iron-deficiency anaemia | Microcytic, hypochromic anaemia, lethargy, anorexia, pallor, hair loss, muscle fatigue |
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B12 deficiency | Macrocytic anaemia, leukopenia, glossitis, thrombocytopenia, peripheral neuropathy |
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Thiamine deficiency | Neurological symptoms, Wernicke’s encephalopathy in severe cases |
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Over-restricted gastric band (for patients with adjustable gastric band) | Maladaptive eating, gastro-oesophageal reflux disorder, vomiting, regurgitation, chronic cough, or recurrent aspiration pneumonia |
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Weight regain | Maximal weight loss usually achieved at one to two years after surgery, with some weight regain thereafter |
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Bariatric surgery is an investment in future health. Although bariatric surgery is demonstrably cost-effective,[10,11] affordability can be a barrier to individuals in the short term. Here are some ways to improve affordability:
—CL 2019
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Due to the impending cyclone, our practice will be closed on Thursday, 6th and Friday, 7th March.
We apologise for any inconvenience and will reopen on Monday, 10th March at 9:00 AM.