Table 31.2. Summary of DVT risk and prophylactic methods providing significant risk reduction*

Surgery/ConditionRisk of all DVT in untreated patientsType of ProphylaxisRisk Reduction with ProphylaxisNumber of Studies
General Surgery 2 25%ES44%3
LDUH68%47
LMWH76%21
IPC88%2
THR 2 54%LMWH70%30
warfarin59%13
TKR2,23 64%LMWH52%13
IPC73%6
Neuro-surgery27,28 28%LMWH38%3
LDUH72%1**
Trauma2,30 30-60%LMWH30%
(compared to LDUH)
1
Acute Spinal Cord Injury 2 80%Not established
Ischemic stroke 2 55%LDUH56%5
LMWH58%3
Danaparoid82%4
Medical conditions 2 16%LMWH76%2**
39%2
LDUH61%3**

* DVT indicates deep venous thrombosis; ES, graduated elastic stockings; IPC, intermittent pneumatic compression; LDUH, low-dose unfractionated heparin; LMWH, low molecular weight heparin; THR, total hip replacement; and TKR, total knee replacement.

**DVT diagnosed by fibrinogen uptake test (FUT)

From: 31, Prevention of Venous Thromboembolism

Cover of Making Health Care Safer
Making Health Care Safer: A Critical Analysis of Patient Safety Practices.
Evidence Reports/Technology Assessments, No. 43.
Shojania KG, Duncan BW, McDonald KM, et al., editors.

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