Efficacy of Aspirin in Preventing Venous Thromboembolism

NCT ID: NCT06635317

Last Updated: 2024-10-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-04-24

Study Completion Date

2023-02-28

Brief Summary

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Efficacy of aspirin and enoxaparin in preventing venous tromboembolism was compared after total knee or hip arthroplasty.

Detailed Description

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Background: Venous thromboembolism (VTE) remains a significant risk following joint replacements, despite advancements in prevention strategies. Aspirin-based therapies have gained popularity due to their perceived safety, ease of administration, and supportive evidence.This study aimed to compare the efficacy of aspirin and enoxaparin in preventing VTE after total knee or hip arthroplasty.

Methods: Sixty patients undergoing primary total knee or hip arthroplasty were randomized to receive either aspirin or enoxaparin. The primary outcome was symptomatic VTE within 90 days. Patients were followed up for Doppler ultrasound evaluations.

Conditions

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Venous Thromboembolism (VTE) Total Joint Arthroplasty Total Hip Arthroplasty (THA)

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

All patients who underwent a preoperative Doppler ultrasound of the lower extremities to screen for VTE and received antibiotic prophylaxis with cephalothin 1 gram intravenously.

At six hours post-surgery, patients in the aspirin group received enoxaparin, 40 mg/day subcutaneously for 3 days, and aspirin, 100 mg/day orally for 25 days. Patients in the enoxaparin group received enoxaparin, 40 mg/day subcutaneously for 28 days, with the dose reduced to 20 mg for patients weighing less than 50 kg or with an estimated glomerular filtration rate less than 30 mL/min/1.73 m².

Additionally, all patients received pneumatic compression stockings postoperatively for at least 21 days as standard care.

Physical therapy was initiated on the day of surgery or postoperative day 1 and continued daily throughout the hospital stay.

Postoperative wound care and Doppler ultrasound evaluations were performed at two and four weeks postoperatively to detect any evidence of VTE.
Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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Long term aspirin group

Long term aspirin group received enoxaparin, 40 mg/day subcutaneously for 3 days, and aspirin, 100 mg/day orally for 25 days

Group Type ACTIVE_COMPARATOR

Aspirin

Intervention Type DRUG

100 mg/day orally for 25 days

Enoxaparin group

enoxaparin group received enoxaparin, 40 mg/day subcutaneously for 28 days, with the dose reduced to 20 mg for patients weighing less than 50 kg or with an estimated glomerular filtration rate less than 30 mL/min/1.73 m².

Group Type ACTIVE_COMPARATOR

enoxaparin

Intervention Type DRUG

40 mg/day subcutaneously for 28 days, with the dose reduced to 20 mg for patients weighing less than 50 kg or with an estimated glomerular filtration rate less than 30 mL/min/1.73 m².

Interventions

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Aspirin

100 mg/day orally for 25 days

Intervention Type DRUG

enoxaparin

40 mg/day subcutaneously for 28 days, with the dose reduced to 20 mg for patients weighing less than 50 kg or with an estimated glomerular filtration rate less than 30 mL/min/1.73 m².

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* All patients provided written informed consent.
* All patients who underwent primary total hip or total knee arthroplasty for osteoarthritis

Exclusion Criteria

* preoperative anticoagulation (direct oral anticoagulant, warfarin, IMPROVE Bleeding Score more or equal to 7, dual antiplatelet therapy)
* medical contraindications (allergy, cancer, cardiac disease, kidney disease, or bleeding disorder precluding anticoagulation).
Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado

OTHER_GOV

Sponsor Role lead

Responsible Party

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Ana Luisa Galicia Zamalloa

MD, MSc

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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ISSSTEP

Puebla City, , Mexico

Site Status

Countries

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Mexico

Other Identifiers

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151.2022

Identifier Type: OTHER

Identifier Source: secondary_id

151.2022

Identifier Type: -

Identifier Source: org_study_id

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