Background: The aim of our study was to determine the therapeutic effect of low-molecular weight heparin after laparoscopic Roux-en-Y gastric bypass.
Methods: We prospectively analyzed data of 39 patients who underwent Roux-en-Y gastric bypass from 1093 consecutive patients who underwent bariatric procedures from May 1999 to May 2012. All patients were given 40 mg enoxaparin subcutaneously once daily preoperatively and continued for 5 days.
Results: There were 31 females. Mean age was 32.48 years and mean body mass index was 44.59 kg/m. Only 46.1% of patients reached the defined therapeutic dose on the second day and 41% on the fifth day. One fatal pulmonary embolism was recorded (1/1093, 0.09%) in the entire series.
Conclusions: Anti-Xa surveillance did not correlate strongly with outcome. Further studies are required for proper dose adjustments of low-molecular weight heparin in these obese patients and whether anti-Xa monitoring should be continued.
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