Efficacy and safety of prolonged use of aspirin or rivaroxaban after surgery for hip fractures
| ISRCTN | ISRCTN76129839 |
|---|---|
| DOI | https://doi.org/10.1186/ISRCTN76129839 |
| ClinicalTrials.gov (NCT) | Nil known |
| Clinical Trials Information System (CTIS) | Nil known |
| Protocol serial number | Nil known |
| Sponsor | Department of Orthopedic Surgery, West China Hospital, Sichuan University |
| Funder | Investigator initiated and funded |
- Submission date
- 22/06/2019
- Registration date
- 01/07/2019
- Last edited
- 29/08/2019
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Circulatory System
Plain English summary of protocol
Background and study aims
Venous thromboembolism (VTE) is a condition in which a blood clot forms most often in the deep veins of the leg, groin or arm (known as deep vein thrombosis, DVT) and travels in the circulation, lodging in the lungs (known as pulmonary embolism, PE). Together, DVT and PE are known as VTE - a dangerous, potentially deadly medical condition. VTE is a serious complication with a high incidence during and after hospitalization, and it is also an important factor in deaths before and after surgery and unexpected deaths in hospitals. In patients who undergo hip fracture surgery, it is recommended that the duration of drug prevention be at least 10 days and extendable to 11–35 days. Several studies have shown that extended prophylaxis substantially reduces the risk of VTE and recommend a longer prophylaxis duration in all patients undergoing hip fracture surgery. This study compares the use of aspirin and rivaroxaban for the prevention of blood clots following hip surgery.
Who can participate?
Patients with hip fracture who require surgery.
What does the study involve?
All patients were given enoxaparin after the operation and returned to a routine dose the next day until postoperative day five. The patients in the aspirin group received an additional 16 days of thromboprophylaxis with 100 mg of aspirin once daily. The rivaroxaban group was assigned to receive an additional 16 days of thromboprophylaxis with 10 mg of oral rivaroxaban once daily.
What are the possible benefits and risks of participating?
None
Where is the study run from?
Chengdu Fifth People’s Hospital, Chengdu, China
When is the study starting and how long is it expected to run for?
November 2011 to March 2018
Who is funding the study?
Investigator funded
Who is the main contact?
Dr Qiang Huang
huangqiang8111@163.com
Contact information
Public
No.33,Ma-shi street
Wenjiang District
Chengdu
Sichuan Province
Chengdu
611130
China
 ORCID ID |
0000-0003-2559-0249 |
|---|---|
| Phone | 028-82722252 |
| cds5120@163.com |
Study information
| Primary study design | Interventional |
|---|---|
| Study design | Interventional pseudorandomised trial |
| Secondary study design | Cluster randomised trial |
| Study type | Participant information sheet |
| Scientific title | Comparison of the efficacy and safety of aspirin and rivaroxaban following enoxaparin treatment for prevention of VTE after hip fracture surgery |
| Study acronym | CESARFETPVTEHFS |
| Study objectives | Aspirin may have equal efficiency and safety with the direct oral anticoagulant rivaroxaban for the prevention of venous thromboembolism after hip fracture surgery |
| Ethics approval(s) | Approved 16/09/2011, Medical Ethics Committee of Chengdu Fifth People’s Hospital (No. 56 Wanchun East Road, Wenjiang District, Chengdu, Sichuan Province, China; 028-82783867; cdwyiec@163.com), ref: 2019075101 |
| Health condition(s) or problem(s) studied | Prevention of venous thromboembolism after hip fracture surgery |
| Intervention | The patients were divided into the aspirin group and rivaroxaban group according to odd or even number of the end of the registration number. All patients were given enoxaparin subcutaneous injection after the operation and returned to a routine dose the next day until postoperative day 5. The patients in the aspirin group received an additional 16 days of thromboprophylaxis with 100 mg of aspirin once daily. The rivaroxaban group was assigned to receive an additional 16 days of thromboprophylaxis with 10 mg of oral rivaroxaban once daily. |
| Intervention type | Drug |
| Phase | Not Applicable |
| Drug / device / biological / vaccine name(s) | Aspirin, rivaroxaban |
| Primary outcome measure(s) |
1. Adjudicated venous thromboembolism, which was defined as deep vein thrombosis involving the inferior vena cava to popliteal vein or pulmonary embolism. Ultrasonography of the lower extremity vein is a routine examination. All patients had to be examined before and after surgery. Pulmonary embolism was confirmed by computed tomographic pulmonary angiography, when the patient's symptoms are suspected to be a pulmonary embolism. |
| Key secondary outcome measure(s) |
Incidence of health issues in the 90 days following the intervention: |
| Completion date | 31/03/2018 |
Eligibility
| Participant type(s) | Patient |
|---|---|
| Age group | Adult |
| Sex | All |
| Target sample size at registration | 390 |
| Key inclusion criteria | 1. Hip fracture who were diagnosed by X-ray and/or computed tomography. |
| Key exclusion criteria | 1. Lower extremity DVT confirmed by preoperative ultrasonography 2. History of thromboembolic disease and undergoing anticoagulant therapy 3. Presence of hemorrhagic diseases and/or a major bleeding history 4. Severe liver or kidney diseases 5. Coagulation disorders 6. Allergy to enoxaparin, aspirin, or rivaroxaban 7. Platelet count less than 100*10^9 cells/L |
| Date of first enrolment | 12/11/2011 |
| Date of final enrolment | 02/01/2018 |
Locations
Countries of recruitment
- China
Study participating centre
Wenjiang District
Chengdu
Sichuan Province
Chengdu
611130
China
Results and Publications
| Individual participant data (IPD) Intention to share | Yes |
|---|---|
| IPD sharing plan summary | Available on request |
| IPD sharing plan | The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request |
Study outputs
| Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
|---|---|---|---|---|---|
| Participant information sheet | Participant information sheet | 11/11/2025 | 11/11/2025 | No | Yes |
Editorial Notes
29/08/2019: Internal review.
05/07/2019: Internal review.
01/07/2019: Trial's existence confirmed by Medical Ethics Committee of Chengdu Fifth People’s Hospital.
