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Adding a Preoperative Dose of LMWH may Decrease VTE Following Bariatric Surgery.

Ahmed Mohammed Abdelsalam1, Ahmed Mohammed Salah Eldeen ElAnsary2, Mohammed Abdallah Salman2

  • 1Faculty of Medicine, Cairo University, Kasr Al Ainy St., Cairo, 11562, Egypt. a.abd.elsalam@kasralainy.edu.eg.

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This summary is machine-generated.

Adding preoperative low molecular weight heparin (LMWH) to postoperative prophylaxis significantly reduces venous thromboembolism (VTE) risk after bariatric surgery. This combined approach did not substantially increase postoperative bleeding complications.

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Area of Science:

  • Bariatric Surgery
  • Vascular Surgery
  • Anesthesiology

Background:

  • Bariatric procedures are highly effective for obesity management.
  • Optimal venous thromboembolism (VTE) prophylaxis regimens, including dosing and duration of anticoagulation, are not standardized post-laparoscopic sleeve gastrectomy.
  • Need to balance VTE prevention with reduction in perioperative bleeding.

Purpose of the Study:

  • To determine the optimal VTE prophylaxis regimen for bariatric procedures.
  • To reduce the incidence of perioperative bleeding.

Main Methods:

  • Prospective randomized study of 100 morbidly obese patients.
  • Group A: Postoperative low molecular weight heparin (LMWH) prophylaxis (1 mg/kg/day, max 120 mg/day) from postoperative day 1 to 15.
  • Group B: Pre- and postoperative LMWH prophylaxis (same dose and duration), with the preoperative dose given 12 hours before surgery.
  • Duplex ultrasound of mesenteric and lower limb vessels performed 15 days postoperatively.

Main Results:

  • A statistically significant increase in postoperative VTE was observed in Group A (4 cases) compared to Group B (0 cases) (P=0.041).
  • Postoperative bleeding complications were not significantly different between Group B and Group A (P=0.315).

Conclusions:

  • Prophylactic anticoagulation with LMWH, both preoperatively and postoperatively, is recommended to prevent perioperative VTE.
  • The addition of preoperative prophylactic anticoagulation showed an insignificant increase in postoperative bleeding.