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Table 2 Randomized studies of thromboprophylaxis with LMWH compared with UFH in medical patients.

From: An update on prevention of venous thromboembolism in hospitalized acutely ill medical patients

Study

Patients

LMWH

UFH

LMWH as effective as UFH?*

Harenberg et al. 1990 [30]

Hospitalised, bedridden medical (n = 166)

Dalteparin 1500 aPTT units s.c. o.d.

5000 IU s.c. t.i.d.

Yes

Bergmann and Neuhart, 1996 [31]

Elderly, bedridden, acutely ill medical (n = 442)

Enoxaparin 20 mg s.c. o.d.

5000 IU s.c. b.i.d.

Yes

Lechler et al. 1996 [32]

Medical (n = 959)

Enoxaparin 40 mg s.c. o.d.

5000 IU s.c. t.i.d.

Yes

Harenberg et al. 1996 [33]

Hospitalised, bedridden medical (n = 1968)

Nadroparin 36 mg s.c. o.d.

5000 IU s.c. t.i.d.

Yes

Kleber et al. 2003 [34]

Severe respiratory disease or acute heart failure (n = 665)

Enoxaparin 40 mg s.c. o.d.

5000 IU s.c. t.i.d.

Yes

  1. *Efficacy defined as the incidence of objectively confirmed VTE in all studies.
  2. aPTT, activated partial thromboplastin time; b.i.d., twice daily; LMWH, low-molecular-weight heparin; o.d., once daily; s.c., subcutaneously; t.i.d., three times daily; UFH, unfractionated heparin; VTE, venous thromboembolism.