| Inclusion Criteria: | 1) Subjects must be willing and able to give written informed consent. Consent to participate in the study must be obtained prior to screening
2) Subjects hospitalized due to congestive heart failure, acute respiratory failure or with infection (without septic shock), acute rheumatic disorder, or inflammatory bowel disease
3) Except for subjects with congestive heart failure or respiratory failure, subjects must have one additional factor including: a) age >/= 75; b) previous documented VTE or history of VTE for which they received anticoagulation for at least 6 weeks; c) cancer; d) BMI >/= 30; e) estrogenic hormone therapy; f) chronic heart or respiratory failure.
4) Expected hospitalization of >/= 3 days after randomization
5) Severely or moderately restricted mobility (i.e. bedridden or limited to chair, walking to bathroom or within room)
6) Men and women, of any race, at least 40 years of age
7) Women of childbearing potential (WOCBP) must be using an adequate method of contraception to avoid pregnancy throughout the study in such a manner that the risk of pregnancy is minimized.
8) WOCBP must have a negative serum or urine pregnancy test (minimum sensitivity 25 IU/L or equivalent units of HCG) within 24 hours prior to the start of investigational product. |