NCT04979026

Brief Summary

Venous thromboembolism, including deep vein thrombosis (DVT), has long been recognized as the most frequent complication within 7 to 14 days after orthopedic surgery, especially total joint arthroplasty. Without prophylactic therapy, the incidence of DVT and pulmonary embolism reaches up to 60% following orthopedic surgery. The possible damage to the vessel wall during the operation, the venous stasis caused by long-term bed rest, and the hypercoagulability of the blood after the surgery are the 3 main reasons for the formation of DVT. In most cases, the thrombi resolve spontaneously; however, some of them (about 1\~4%) may develop into symptomatic and even fatal DVT. Ankle pumping exercise is currently suggested for the patients with joint placement surgery to prevent the formation of lower-extremity DVT after orthopedic surgery. However, the compliance of the exercise at home is unclear. In order to remind the patients to the active ankle exercise and record the executive rate, a device was developed to help the patient to exercise in the hospital and at home. The device will remind the patient to exercise at specific time point by verbal and vibrations, and detect the range of motion during the exercise for further analysis. The aim of this study is to access the effect of a non-invasive novel device in preventing the formation of lower limb DVT. Maximum venous outflow, maximum venous capacity, and blood rheology were measured and the incidence of DVT was recorded for the data analysis.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
90

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Oct 2019

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 17, 2019

Completed
1.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 20, 2020

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2020

Completed
6 months until next milestone

First Submitted

Initial submission to the registry

July 6, 2021

Completed
21 days until next milestone

First Posted

Study publicly available on registry

July 27, 2021

Completed
Last Updated

July 27, 2021

Status Verified

July 1, 2021

Enrollment Period

1.1 years

First QC Date

July 6, 2021

Last Update Submit

July 15, 2021

Conditions

Outcome Measures

Primary Outcomes (4)

  • change of peak flow velocity

    The peak flow velocity was directly detected using the Doppler images. The examination was conducted by an experienced technician.

    The peak flow velocity was determined on the 1st, 3rd, and 14th days after surgery.

  • change of flow volume

    The flow volume was directly detected using the Doppler images. The examination was conducted by an experienced technician.

    The flow volume was determined on the 1st, 3rd, and 14th days after surgery.

  • Number of Participants with stasis

    Venous stasis was determined by a peak flow velocity lower than 10 cm/s, and the color of the blood inside the vein represented in the echo image was gray. In addition, the contour of the vein was compressible under a slight compression force with an echo transducer.

    Stasis was determined on the 1st, 3rd, and 14th days after surgery.

  • Number of Participants with deep venous thrombosis

    If the peak blood flow, flow volume, and blood echo image were the same as that of stasis, but the contour of the vein was incompressible under a slight compression, the cases were recorded as deep venous thrombosis.

    Deep venous thrombosis was determined on the 1st, 3rd, and 14th days after surgery.

Study Arms (3)

active ankle pumping without any reminders

NO INTERVENTION

In group 1, active ankle pumping exercise for the operative limb was performed without any reminder during hospitalization and at home after being discharged.

intermittent pneumatic compression

ACTIVE COMPARATOR

In group 2, intermittent pneumatic compression was applied to the operative low limb during hospitalization, while active ankle pumping exercise was adopted without any reminder after discharge.

Device: intermittent pneumatic compression

active ankle pumping with a regular watch alarm

EXPERIMENTAL

In group 3, in addition to the active ankle pumping exercise for the operative limb, the patients were reminded to exercise at specific time points with a vocal alarm and vibration through a wrist watch during the hospitalization period and at home after discharge. The watch was continuously used until the 14th day when the patients returned to the hospital for examination.

Device: active ankle pumping with a regular watch alarm

Interventions

In addition to the active ankle pumping exercise for the operative limb, the patients were reminded to exercise at specific time points with a vocal alarm and vibration through a wrist watch during the hospitalization period and at home after discharge.

active ankle pumping with a regular watch alarm

In this group, intermittent pneumatic compression was applied to the operative low limb during hospitalization, while active ankle pumping exercise was adopted without any reminder after discharge.

intermittent pneumatic compression

Eligibility Criteria

Age40 Years - 90 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • patients who underwent total knee replacement surgery

You may not qualify if:

  • Patients with a history of cardiovascular disease, such as DVT, dyslipidemia, hypertension, myocardial infarction, and hemorrhagic disease were excluded from this study.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Show Chwan Memorial Hospital

Changhua, 500, Taiwan

Location

Related Publications (5)

  • Anderson DR, Dunbar M, Murnaghan J, Kahn SR, Gross P, Forsythe M, Pelet S, Fisher W, Belzile E, Dolan S, Crowther M, Bohm E, MacDonald SJ, Gofton W, Kim P, Zukor D, Pleasance S, Andreou P, Doucette S, Theriault C, Abianui A, Carrier M, Kovacs MJ, Rodger MA, Coyle D, Wells PS, Vendittoli PA. Aspirin or Rivaroxaban for VTE Prophylaxis after Hip or Knee Arthroplasty. N Engl J Med. 2018 Feb 22;378(8):699-707. doi: 10.1056/NEJMoa1712746.

    PMID: 29466159BACKGROUND
  • Blagojevic M, Jinks C, Jeffery A, Jordan KP. Risk factors for onset of osteoarthritis of the knee in older adults: a systematic review and meta-analysis. Osteoarthritis Cartilage. 2010 Jan;18(1):24-33. doi: 10.1016/j.joca.2009.08.010. Epub 2009 Sep 2.

    PMID: 19751691BACKGROUND
  • Boylan MR, Perfetti DC, Kapadia BH, Delanois RE, Paulino CB, Mont MA. Venous Thromboembolic Disease in Revision vs Primary Total Knee Arthroplasty. J Arthroplasty. 2017 Jun;32(6):1996-1999. doi: 10.1016/j.arth.2016.12.051. Epub 2017 Jan 11.

    PMID: 28209273BACKGROUND
  • Changulani M, Kalairajah Y, Peel T, Field RE. The relationship between obesity and the age at which hip and knee replacement is undertaken. J Bone Joint Surg Br. 2008 Mar;90(3):360-3. doi: 10.1302/0301-620X.90B3.19782.

    PMID: 18310761BACKGROUND
  • Chen Q, Huang S, Chen X, Feng L, Zhu X. [Clinical efficacy of multi-pattern detumescence after total knee arthroplasty treated with acupoint massage and mild moxibustion]. Zhongguo Zhen Jiu. 2016 May;36(5):471-5. Chinese.

    PMID: 27509603BACKGROUND

MeSH Terms

Conditions

Venous Thrombosis

Interventions

Intermittent Pneumatic Compression Devices

Condition Hierarchy (Ancestors)

ThrombosisEmbolism and ThrombosisVascular DiseasesCardiovascular Diseases

Intervention Hierarchy (Ancestors)

Equipment and Supplies

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

July 6, 2021

First Posted

July 27, 2021

Study Start

October 17, 2019

Primary Completion

November 20, 2020

Study Completion

December 31, 2020

Last Updated

July 27, 2021

Record last verified: 2021-07

Data Sharing

IPD Sharing
Will not share

Locations