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See also:
All DVT prophylaxis clinical trials
All clinical trials of new anticoagulants
All clinical trials of dabigatran 150mg
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Treatments
Studied treatment |
dabigatran etexilate 150 mg q.d. for 12-15 days
started 6 to 12 hours after completion of surgery
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Control treatment |
enoxaparin 30 mg SC BID after surgery for 12-15 days
started 12 to 24 hours after surgery, usually on the morning after the day of surgery
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Concomittant treatment |
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Remarks |
|
Treatments description |
enoxaprin regimen |
started after surgery |
treatment duration |
12-15 days |
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Patients
Patients |
Total knee replacement
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Inclusion criteria |
Patients 18 years or older and weighing more than 40 kg who had undergone primary elective unilateral total knee arthroplasty
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Exclusion criteria |
known inherited or acquired clinically significant bleeding disorder; major surgery, trauma, uncontrolled hypertension, or myocardial infarction within the last 3 months; history of acute intracranial disease or hemorrhagic stroke; gastrointestinal or urogenital bleeding or ulcer disease within the last 6 months; severe liver disease; aspartate or alanine aminotransferase (AST, ALT) levels higher than 2x the upper limit of the normal range (ULN) within the last month; severe renal insufficiency (creatinine clearance <30 mL/min); need for concomitant longacting nonsteroidal anti-inflammatory drug therapy or treatment with an anticoagulant during study drug treatment; active malignant disease; platelet count less than 100 � 10^9/L,
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Remarks |
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Baseline characteristics |
Age (mean), years |
66y |
Total hip replacement |
0% |
Total knee replacement |
100% |
Weight, kg, |
88kg |
Female |
57% |
general anesthesia |
53% |
BMI (kg/m�) |
NA |
History of venous thromboembolism (%) |
NA |
Use of cement |
NA |
Estimated creatinine clearance >60 ml/min |
NA (mean clearance 82.9 ml/min) |
Previous orthopedic surgery (%) |
NA |
Duration of surgery (min) |
91 min |
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Method and design
Randomized effectives |
877 / 876 (studied vs. control) |
Blinding |
double blind |
Follow-up duration |
12-15 days, median 14d |
Number of centre |
97 |
Geographic area |
US, Canada, Mexico, UK |
Hypothesis |
Non inferiority |
Primary endpoint |
total VTE and all-cause mortality |
Remarks |
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Remarks / Comments
Results
Endpoint
Studied treat. n/N
Control treat. n/N
Graph
RR [95% CI]
All cause death
1 / 877
0 / 876
classic
4,99 [0,07;365,56]
major or clinically relevant non-major bleeding
27 / 871
33 / 868
0,82 [0,49;1,34]
non-fatal pulmonary embolism
0 / 649
5 / 643
classic
0,05 [0,00;2,60]
major VTE (fatal and non fatal DVT,PE)
20 / 656
15 / 668
classic
1,36 [0,70;2,63]
total VTE and all-cause mortality
219 / 649
163 / 643
1,33 [1,12;1,58]
distal DVT
198 / 649
148 / 643
1,33 [1,10;1,59]
Major bleeding
5 / 871
12 / 868
0,42 [0,15;1,17]
0
2
1.0
Relative risks
|
Endpoint |
Events (%) |
Relative Risk |
95% CI |
Endpoint definition in the trial |
Ref |
Studied treat. |
Control treat. |
major or clinically relevant non-major bleeding
|
27 / 871 (3,1%) |
33 / 868 (3,8%) |
0,82 |
[0,49;1,34] |
|
12103 |
All cause death
|
1 / 877 (0,1%) |
0 / 876 (0,1%) |
2,00 |
[0,07;59,47] |
|
12103 |
non-fatal pulmonary embolism
|
0 / 649 (0,1%) |
5 / 643 (0,8%) |
0,10 |
[0,01;1,81] |
|
12103 |
Major bleeding
|
5 / 871 (0,6%) |
12 / 868 (1,4%) |
0,42 |
[0,15;1,17] |
|
12103 |
total VTE and all-cause mortality
|
219 / 649 (33,7%) |
163 / 643 (25,3%) |
1,33 |
[1,12;1,58] |
|
12103 |
distal DVT
|
198 / 649 (30,5%) |
148 / 643 (23,0%) |
1,33 |
[1,10;1,59] |
|
12103 |
major VTE (fatal and non fatal DVT,PE)
|
20 / 656 (3,0%) |
15 / 668 (2,2%) |
1,36 |
[0,70;2,63] |
|
12103 |
The primary endpoint (if exists) appears in blod characters
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Reference(s) used for data extraction:
12103: Ginsberg JS, Davidson BL, Comp PC, Francis CW, Friedman RJ, Huo MH, Lieberman JR, Muntz JE, Raskob GE, Clements ML, Hantel S, Schnee JM, Caprini JAOral thrombin inhibitor dabigatran etexilate vs North American enoxaparin regimen for prevention of venous thromboembolism after knee arthroplasty surgery.J Arthroplasty 2009;24:1-9
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Endpoint |
studied treat. |
control treat. |
mean diff |
Absolute risk reduction
|
Endpoint |
Events rate |
Absolute risk reduction (ARR) |
Studied treat. |
Control treat. |
major or clinically relevant non-major bleeding |
3,10% |
3,80% |
-7,0‰
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Major bleeding |
5,74‰ |
1,38% |
-8,1‰
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total VTE and all-cause mortality |
33,74% |
25,35% |
8,4%
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distal DVT |
30,51% |
23,02% |
7,5%
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major VTE (fatal and non fatal DVT,PE) |
3,05% |
2,25% |
8,0‰
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Meta-analysis of all similar trials:
anticoagulant in DVT prophylaxis for orthopedic surgery
antithrombotics in DVT prophylaxis for elective major knee surgery
antithrombotics in DVT prophylaxis for orthopedic surgery
direct antithrombins in DVT prophylaxis for all type of patients
new anticoagulants in DVT prophylaxis for elective major knee surgery
new anticoagulants in DVT prophylaxis for orthopaedic surgery
new anticoagulants in DVT prophylaxis for all type of patients
Reference(s)
-
Ginsberg JS, Davidson BL, Comp PC, Francis CW, Friedman RJ, Huo MH, Lieberman JR, Muntz JE, Raskob GE, Clements ML, Hantel S, Schnee JM, Caprini JA.
Oral thrombin inhibitor dabigatran etexilate vs North American enoxaparin regimen for prevention of venous thromboembolism after knee arthroplasty surgery..
J Arthroplasty 2009;24:1-9
- 10.1016/j.arth.2008.01.132
Pubmed
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Hubmed
| Fulltext
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