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Table 9 Thromboprophylaxes

From: Risk factors for venous thromboembolism of total hip arthroplasty and total knee arthroplasty: a systematic review of evidences in ten years

Risk factors (thromboprophylaxes)

Studies reporting on a risk factor for THA or TKA: total number, number reporting a significant (p ≤ .05) increased (+) or decreased (−) risk, and number with no significant association (p > .05)

THA

TKA

N

p ≤ .05

p > .05

N

p ≤ .05

p > .05

 

+

-

  

+

-

 

Chemoprophylaxis (vs. no-prophylaxis)

3

0

2

1

3

0

2

1

Enoxaparin (vs. other LMWH)

3

0

1

2

3

0

1

2

Low-dose LMWH (vs. high-dose LMWH)

-

-

-

-

1

0

0

1

Preoperative LMWH (vs. Postoperative)

1

0

0

1

2

0

0

2

Oligosaccharides* (vs. LMWH)

2

0

2

0

1

0

0

1

Direct factor-Xa inhibitor (vs. LMWH)

5

0

4

1

5

1

2

2

Direct factor-II inhibitor (vs. LMWH)

2

0

1

1

2

1

0

1

Partial factor-VII inhibitor (vs. LMWH)

-

-

-

-

1

0

1

0

NSAIDS (vs. LMWH)

2

0

0

2

1

0

0

1

VKA (vs. NSAIDS)

-

-

-

-

1

1

0

0

ACCP-recommended prophylaxis (vs. others )

1

0

1

0

1

0

1

0

Extended prophylaxis (vs. short)

1

0

1

0

2

0

2

0

Mechanical prophylaxis (vs. chemoprophylaxis)

1

0

0

1

-

-

-

-

Below-knee stockings (vs. up-knee)

-

-

-

-

1

0

0

1

Earlier mobilization

2

0

2

0

3

0

3

0

Weight bearing within 48 h

1

0

0

1

1

0

0

1

  1. *Oligosaccharides include fondaparinux and SR123781A (a synthetic oligosaccharide).
  2. Extended/short prophylaxis has two kinds of definations:
  3. 1. Thromboprophylaxis continued to Day 30 ± 5/Day 10 ± 2;
  4. 2. Thromboprophylaxis lasting > 14d/<14d.