otitis media
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Middle ear surgery under general anesthesia for patients with ear diseases =40 years old and =80 years old; Operation duration =2 hours.
Exclusion criteria
Exclusion criteria: 1) Patients with venous thrombosis and elevated D-Dimer found by preoperative examination after admission; 2) Patients undergoing anticoagulation or antiplatelet therapy at admission; 3) Risk assessment table for anticoagulant bleeding (HAS-BLED=3); 4) Patients known to be allergic to rivaroxaban; 5) Acute or chronic kidney disease (glomerular filtration rate less than 30ml/min); 6) Life expectancy is not more than 6 months or it is expected to be difficult to complete the interview
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Incidence of lower extremity venous thrombosis or pulmonary embolism 1 week after surgery; | — |
Countries
China
Contacts
Beijing Tsinghua Changgung Hospital