Evaluating the Need for Pneumatic Compression Devices

Not Applicable

Completed

Conditions: Osteoarthritis

Interventions: Drug: Aspirin
Device: Portable Compression Device

Registration Number: NCT02641080

Lead Sponsor: West Virginia University

Brief Summary: For patients undergoing total hip and knee arthroplasty, does the use of Aspirin alone compared to using Aspirin along with a mobile compression device provide equivocal results for preventing Deep Vein Thrombosis (DVT) and pulmonary embolism (PE) after total joint arthroplasty? The investigator will evaluate the prevention of DVT/PE after total hip and knee arthroplasty will be evaluated to see if there is a decreased risk of bleeding while continuing to prevent thromboembolic disease. The equivalency of using the mobile compression devices with aspirin compared to aspirin alone in patients undergoing total hip and knee arthroplasty will be evaluated. A previous study has shown that patient compliance with the pneumatic compression device is less than 80%.

Detailed Description: The research question is: does the use of Aspirin alone compared to using Aspirin along with a mobile compression device provide equivocal results for preventing Deep Vein Thrombosis (DVT) and pulmonary embolism (PE) after total joint arthroplasty? Participants were randomized to either receive aspirin and mobile pneumatic compression devices or aspirin alone as outpatient DVT prophylaxis as their standard of care after primary total hip and total knee arthroplasty. Participants randomized to the compression device group were asked to wear the compression devices for 20 hours a day for 2 weeks along with taking an aspirin (325mg once a day), per standard of care. Participants randomized to aspirin alone took 325 mg per day. Participant usage information from Active Care +S.F.T. mobile devices was collected. The information was recorded at the participant's first follow up visit occurring between 7-21 days post-surgery. All of the participants were asked to keep a checklist indicating aspirin intake compliance each day, which was returned at their first follow up visit. Participants randomized to mobile pneumatic compression device and aspirin (325 mg) were asked to complete a satisfaction questionnaire about the compression device at their first follow up visit. Participants received a phone call from a member of the research team approximately 90 days post-op. The call was necessary to assess if any participants have been diagnosed with DVT at another hospital.

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 80

Inclusion Criteria

All patients, 18+ years of age, scheduled at WVU Medicine Center for Joint Replacement for a History and Physical visit to undergo a total hip or knee surgery.
Primary replacements and revisions.
Weight bearing as tolerated postoperatively.

Exclusion Criteria

History of DVT/PE
History of hypercoagulable disorder
Currently on other blood thinning medication with the exception of aspirin (Plavix, Coumadin, xarelto, pradaxa, lovenox, heparin, other Factor Xa inhibitors).
Patients less than 18 years of age.

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Aspirin with portable Compression Device	Portable Compression Device	Participants randomized to the compression device group are asked to wear the compression devices for 20 hours a day for 2 weeks along with taking an 325mg aspirin per day as their outpatient DVT/PE prophylaxis.
Aspirin with portable Compression Device	Aspirin	Participants randomized to the compression device group are asked to wear the compression devices for 20 hours a day for 2 weeks along with taking an 325mg aspirin per day as their outpatient DVT/PE prophylaxis.
Aspirin	Aspirin	Participants randomized to aspirin alone will be advised to take a 325mg per day as their outpatient DVT/PE prophylaxis.

Primary Outcome Measures

Name	Time	Method
Number of Participants With Venous Thromboembolism	90 days	Patients clinically diagnosed with a DVT or PE during the immediate 90 days post operative.

Secondary Outcome Measures

Name	Time	Method
Aspirin Usage Over 6 Week Post op Period	6 week post op	Number of Participants Taking aspirin over the 6 week post op period
Compression Pump Compliance Over 2 Weeks Post op	14 days post operative	Patients found to be compliant with recommended pump use over the course of two weeks. Compliance is defined as the recommended dose of 20 hours during the recommend course of prophylaxis.
Overall Pump Experience After 2 Weeks	2 weeks post op	Correlation of Recorded Pump Compliance with perceived Patient Factors