title: Incidence of deep vein thrombosis and thrombosis of the portal-mesenteric axis after laparoscopic sleeve gastrectomy.
abstract: BACKGROUND
  Venous thromboembolism is the most common postoperative medical complication after bariatric surgery. Mortality associated with thromboembolic processes can reach up to 50%-75%. The aim of this study was to determine the incidence of deep vein thrombosis (DVT) and portal-splenic-mesenteric vein thrombosis (PSMVT) in our population undergoing laparoscopic sleeve gastrectomy (LSG) as the bariatric technique, with an anti-thromboembolic dosage scheme of 0.5 mg/kg/day 12 hours preoperatively and maintained during 30 days postoperatively.
  
  
  METHODS
  A prospective observational study was performed, including 100 consecutive patients undergoing LSG between October 2007 and September 2013. To determine the incidence of DVT and PSMVT, all patients undergo contrast-enhanced abdominal computed tomography (CT) and Doppler ultrasonography (US) of both lower limbs on the third postoperative month, whether they were asymptomatic or symptomatic.
  
  
  RESULTS
  Contrast-enhanced CT showed 1 case of PSMVT (1%). Two patients presented DVT in the right leg (2%). All the cases were asymptomatic.
  
  
  CONCLUSIONS
  The incidence of PSMVT and DVT after LSG with a prophylactic low-molecular-weight heparin dose of 0.5 mg/kg/day and maintained during 30 days postoperatively is 1% and 2%, respectively. According to these results, a postoperative screening with Doppler US and/or contrast-enhanced CT seems to be unnecessary.
authors: 1 Department of Radiology, General University Hospital Elche , Alicante, Spain .
authors: Ena
authors: E
authors: Alsina
authors: Jaime
authors: J
authors: Ruiz-Tovar
authors: Maria Remedios
authors: MR
authors: Alpera
authors: Jose Gregorio
authors: JG
authors: Ruiz-García
authors: Manuel Enrique
authors: ME
authors: Lopez-Perez
authors: Jose Francisco
authors: JF
authors: Ramon-Sanchez
authors: Francisco
authors: F
authors: Ardoy
mesh_terms: D000328:Adult; D000925:Anticoagulants / Q000627:therapeutic use; D058070:Asymptomatic Diseases / Q000453:epidemiology; D050110:Bariatric Surgery / Q000379:methods; D018890:Chemoprevention; D005260:Female; D005743:Gastrectomy / Q000379:methods*; D006495:Heparin, Low-Molecular-Weight / Q000627:therapeutic use; D006801:Humans; D015994:Incidence; D035002:Lower Extremity / Q000000981:diagnostic imaging; D008297:Male; D065666:Mesenteric Ischemia / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000517:prevention & control; D008875:Middle Aged; D009767:Obesity, Morbid / Q000601:surgery*; D011169:Portal Vein / Q000000981:diagnostic imaging*; D011183:Postoperative Complications / Q000453:epidemiology*; D011446:Prospective Studies; D013162:Splenic Vein / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D018608:Ultrasonography, Doppler; D020246:Venous Thrombosis / Q000175:diagnosis / Q000453:epidemiology* / Q000517:prevention & control
chemical_list: D000925:Anticoagulants; D006495:Heparin, Low-Molecular-Weight