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Deep venous thrombosis after posterior spinal surgery.

T Oda1, T Fuji, Y Kato

  • 1Department of Orthopaedic Surgery, and the Department of Diagnostic Imaging, Osaka Prefectural Hospital, Osaka, Japan.

Spine
|November 14, 2000
PubMed
Summary

Deep venous thrombosis (DVT) occurs in 15.5% of patients after posterior spinal surgery without prophylaxis. Lumbar procedures showed a higher DVT prevalence than cervical ones, indicating a need for further research on screening and prevention.

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Area of Science:

  • Orthopedic Surgery
  • Vascular Surgery
  • Diagnostic Imaging

Background:

  • Deep venous thrombosis (DVT) is a potential complication following spinal surgery.
  • Limited venographic studies exist on DVT occurrence after posterior spinal procedures without prophylaxis.

Purpose of the Study:

  • To determine the prevalence of deep venous thrombosis (DVT) in patients undergoing posterior spinal surgery without prophylactic measures.
  • To evaluate the utility of venography in screening for DVT post-spinal surgery.

Main Methods:

  • A prospective study enrolled 134 patients undergoing posterior spinal surgery.
  • 110 patients (82.1%) underwent bilateral ascending venography within 14 days post-surgery.
  • No mechanical or anticoagulant prophylaxis was administered.

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Main Results:

  • No clinical signs of DVT or pulmonary embolism were observed.
  • Venographic evidence of DVT was found in 17 patients (15.5%), with 16 distal and 1 proximal thrombus.
  • DVT prevalence was significantly higher in lumbar (26.5%) versus cervical (5.6%) procedures (P=0.003); age was also a significant factor (P<0.05).

Conclusions:

  • The prevalence of deep venous thrombosis (DVT) after posterior spinal surgery is higher than commonly assumed.
  • Further research is required to establish optimal screening methods and the efficacy of prophylactic treatments for DVT in this patient population.