A Predictive Index for Postoperative Deep Vein Thrombosis in Thoracic Surgery Patients

Area of Science:

• Vascular Surgery
• Thrombosis Prevention
• Clinical Trials

Background:

• Deep vein thrombosis (DVT) is a significant risk following thoracic surgery.
• Prophylactic measures are crucial to reduce DVT incidence.
• Current prophylactic strategies include anticoagulation and mechanical methods.

Purpose of the Study:

• To evaluate the efficacy of combining heparin with compression stockings for DVT prophylaxis in thoracic surgery patients.
• To identify clinical variables predictive of DVT development.

Main Methods:

• A single-centre prospective randomized trial involving 200 thoracic surgery patients.
• Patients received either subcutaneous heparin alone or heparin plus graded compression stockings.
• Deep vein thrombosis diagnosed clinically and via 131I-labelled fibrinogen scans.

Main Results:

• Six DVTs occurred in the stocking group versus 11 in the non-stocking group.
• The addition of stockings to heparin showed a non-statistically significant reduction in DVT incidence.
• Discriminant analysis identified five clinical variables yielding a 94% true positive and 26% false positive prediction rate for DVT.

Conclusions:

• Compression stockings may offer adjunctive benefit to heparin prophylaxis for DVT in thoracic surgery, though not statistically significant in this trial.
• A predictive index based on clinical variables can effectively identify patients at risk for DVT.
• Further research may be warranted to confirm the synergistic effect of stockings and heparin.