Prevention of Venous Thromboembolism : The Seventh ACCP Conference on Antithrombotic and Thrombolytic Therapy

https://www.chpso.org/sites/main/files/file-attachments/chest-2008-geerts-381s-453s.pdf

Prevention of Venous Thromboembolism* American College of Chest Physicians Evidence- Based Clinical Practice Guidelines (8th Edition)

https://www.srcv.ro/en/ghiduri/Preventia%20trombembolismului%20la%20pacientii%20nonortopedici%20-%20Ghidurile%20ACCP%202012.pdf

Prevention of VTE in Nonorthopedic Surgical Patients : Antithrombotic Therapy and Prevention of Thrombosis, 9th ed: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines

The increasing prevalence of morbid obesity together with the development of laparoscopic approaches has led to a steep rise in the number of bariatric operations. These guidelines intend to define the comparative effectivness and surrounding circumstances of the various types of obesity surgery. A consensus panel representing the fields of general/endoscopic surgery, nutrition and epidemiology convened to agree on specific questions in obesity surgery. Databases were systematically searched for clinical trial results in order to produce evidence-based recommendations. Following two days of discussion by the experts and a plenary discussion, the final statements were issued. After the patient’s multidisciplinary evaluation, obesity surgery should be considered in adults with a documented BMI greater than or equal to 35 and related comorbidity, or a BMI of at least 40. In addition to standard laboratory testing, chest radiography, electrocardiography, spirometry, and abdominal ultrasonography, the preoperative evaluation of obesity surgery patients also includes upper gastrointestinal endoscopy or radiologic evaluation with a barium meal. Psychiatric consultation and polysomnography can safely be restricted to patients with clinical symptoms on preoperative screening. Adjustable gastric banding (GB), vertical banded gastroplasty (VBG), Roux-en-Y gastric bypass (RYGB) and biliopancreatic diversion (BPD) are all effective in the treatment of morbid obesity, but differ in degree of weight loss and range of complications. The choice of procedure therefore should be tailored to the individual situation. There is evidence that a laparoscopic approach is advantageous for LAGB, VBG, and GB (and probably also for BPD). Antibiotic and antithromboembolic prophylaxis should be used routinely. Patients should be seen 3 to 8 times during the first postoperative year, 1 to 4 times during the second year and once or twice a year thereafter. Outcome assessment after surgery should include weight loss and maintainance, nutritional status, comorbidities and quality-of-life.

Obesity surgery: evidence-based guidelines of the European Association for Endoscopic Surgery (EAES).

Guidelines for the use of retrievable and convertible vena cava filters: report from the Society of Interventional Radiology multidisciplinary consensus conference.

Background: Pulmonary embolism (PE) is a leading cause of death following gastric bypass operations for morbid obesity. Although its incidence appears to be stable, the number of bariatric operations performed annually is increasing considerably; hence, the isolated fatal PE is no longer a rare occurrence. The records of patients undergoing bariatric surgical operations since 1979 were reviewed to determine specific factors that increased the risk of developing a fatal PE. Both recommended and optional indications for prophylactic inferior vena cava (IVC) filter placement in patients considered at high risk were also examined. Materials and Methods: Between September, 1979 and March, 2003, 5,554 operations were performed for clinically severe obesity. These operations included jejuno-ileal bypass, horizontal gastroplasty, Roux-en-Y gastric bypass with a 30-cc pouch, modified biliopancreatic diversion, the Sapala-Wood Micropouch® gastric bypass (MicropouchSM), Lap-Band®, and revisions. 12 fatal pulmonary emboli (0.21 %) were identified. All but 1 embolus occurred within 30 days following surgery. Results: In 11 of 12 patients, at least 1 co-morbidity known to increase the risk of postoperative venous thromboembolism (VTE) was identified. 4 co-morbidites were common to 4 patients (33%): venous stasis disease (VSD), BMI ≥ 60, truncal obesity, and obesity hypoventilation syndrome/sleep apnea syndrome (OHS/SAS). 6 of 12 patients (50%) had a BMI ≥ 60. Another 6 had chronic leg swelling with stasis dermatitis. 2 patients experienced a previous PE, and 1 patient reported a history of deep vein thrombosis (DVT). Conclusion: 4 patients (33%) demonstrated a combination of risk factors (VSD, BMI ≥ 60, truncal obesity, OHS/SAS) recognized as significant for the development of postoperative VTE. In such patients, prophylactic IVC filter placement is highly recommended. Filter placement for other factors, such as age, body build, hypercoagulable state, etc., should be considered on an individual basis.

Fatal Pulmonary Embolism after Bariatric Operations for Morbid Obesity: A 24-Year Retrospective Analysis

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Fatal Pulmonary Embolism after Bariatric Operations for Morbid Obesity: A 24-Year Retrospective Analysis