Diet after bariatric surgery in practice

Summary: Bariatric-metabolic surgery is associated with many health benefi ts and improved quality of life. However, the resulting eff ect largely depends on the patient’s compliance and willingness and ability to adopt a new diet, which is associated with bariatric procedures. A whole team of experts plays an important role in preparing the patient for this change. Appropriately composed diet and adherence to the frequency and size of portions is essential in the prevention of nutritional defi ciencies. The bariatric food pyramid is a suitable helper for the implementation of nutritional recommendations. Key words: main nutrients – energy intake – bariatric food pyramid – bariatric plate

Non-Alcoholic Fatty Liver Disease (NAFLD) and Bariatric/Metabolic Surgery as Its Treatment Option: A Review

The prevalence of non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH) has considerably increased over the last years. NAFLD is currently the most common cause of chronic liver disease in the developing world. The diagnosis of NAFLD/NASH is often incidental, as the early-stage of disease is frequently free of symptoms. Most patients recognized with NAFLD have severe obesity and other obesity-related disease such as type 2 diabetes mellitus (T2DM), insulin-resistance, dyslipidemia and hypertension. The only proven method for NAFLD improvement and resolution is weight loss. Bariatric surgery leads to significant and long-term weight loss as well as improvement of coexisting diseases. There is a lot of evidence suggesting that metabolic/bariatric surgery is an effective method of NAFLD treatment that leads to reduction in steatosis, hepatic inflammation and fibrosis. However, there is still a need to perform long-term studies in order to determine the role of bariatric surgery as a treatment option for NAFLD and NASH. This review discusses current evidence about epidemiology, pathogenesis and treatment options for NAFLD including bariatric/metabolic surgery and its effect on improvement and resolution of NAFLD.

Principles for choosing bariatric interventions (review of literature)

Currently, bariatric (metabolic) surgery is the main effective treatment of obesity and associated pathological conditions. The features of the course of obesity as a chronic progressive disease, heterogeneous etiology, clinical manifestations and a steady increase in number of patients worldwide make the problem of bariatric interventions extremely urgent. The article presents the analysis of modern data concerning the choice of the method of surgical benefits in patients with obesity and their own clinical experience.

Surgical Technique of Diverted One-Anastomosis Gastric Bypass

Laparoscopic diverted one-anastomosis gastric bypass (D-OAGB) is a bariatric procedure combining the principles of restriction, malabsorption, and other factors to induce weight loss. It is achieved by creating a narrow, long gastric pouch and bypassing a part of the small bowel (biliopancreatic limb). D-OAGB was first described by Dr. Ribero in 2013 and is technically a variation of the very heterogeneous group of Roux-en-Y gastric bypass operations. There are different technical variants to perform D-OAGB and to organize pre- and postoperative care. The following article is based on the approach to bariatric surgery as taken at the Department of General Surgery at the Medical University of Vienna. This article focuses on patient preparation before bariatric/metabolic surgery with mandatory and optional preoperative examinations to find the surgical procedure best suited for each individual patient and to decrease the patient’s risk. The surgical technique of D-OAGB itself, including positioning of the patient and related technical highlights, as well as the specifics of the postoperative course, are described. D-OAGB is an effective procedure for patients with symptomatic gastroesophageal reflux for adequate weight loss and remission of comorbidities with a low risk of malnutrition. For D-OAGB to be successful, important technical steps, such as creating a narrow, long pouch, exact length of the biliopancreatic and alimentary limb, and additional hiatoplasty (if necessary), should be taken. In terms of the postoperative course, regular checkups are vital to ensure desirable outcome in the long-term follow up and early detection of adverse developments.

Metabolic surgery for type II diabetes: an update

Bariatric operations have been documented in clinical trials to promote remission or dramatic improvement of Type II Diabetes Mellitus and related comorbidities. Herein we review randomized trials and meta-analyses published during the last 20 years on the results of bariatric/metabolic surgery in obese patients with type 2 diabetes with the aim of highlighting the scientific evidence available. Several studies and RCTs in the last 20 years have showed outstanding results of bariatric/metabolic surgery on Type II diabetes and comorbidities in patients with either BMI > 35 kg/m2 or BMI < 35 kg/m2. They have established that bariatric procedures are superior to non-surgical interventions for inducing weight loss and amelioration of type 2 diabetes, even in patients with a BMI between 30 and 35 kg/m2. The physiopatologic changes that improve glucose homeostasis after bariatric surgery remain unclear but glycemic control is improved after sleeve gastrectomy, duodenal-jejunal bypass, Roux-en-Y gastric bypass, gastric banding, One Anastomosis Gastric Bypass, and biliopancreatic diversion. Nevertheless, it is suggested that the various gastrointestinal procedures may have different effects and mechanisms of action. Metabolic surgery will help integrate knowledge and multidisciplinary expertise to provide a combination of conservative and surgical treatments for Type II diabetes. These treatments must be considered as complementary options and not alternative strategies, with the same goal of controlling diabetes and achieving cure.