Clinical Trials Logo

Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT00253851
Other study ID # OHREB 2002597-01H
Secondary ID
Status Completed
Phase Phase 4
First received November 10, 2005
Last updated April 13, 2012
Start date July 2003
Est. completion date June 2011

Study information

Verified date April 2012
Source Ottawa Hospital Research Institute
Contact n/a
Is FDA regulated No
Health authority Canada: Health Canada
Study type Interventional

Clinical Trial Summary

The goal of this study is to prevent blood clots from forming during surgery and a few days after total knee replacement surgery. This study will help us identify whether using a blood thinner in the operating room will stop blood clots from forming during the operation.


Description:

Venous thromboembolism is a major cause of morbidity and mortality after lower limb orthopaedic surgery in the adult patient. If, as suggested, DVT formation begins intra-operatively then targeting this period to prevent clot formation could substantially reduce DVT rates in the TKA population. The present study aims to determine whether this intra-operative regional heparinization technique is effective in preventing the intra-operative formation of DVT following TKA, as evidenced by venography in the early post-operative period.


Recruitment information / eligibility

Status Completed
Enrollment 30
Est. completion date June 2011
Est. primary completion date May 2011
Accepts healthy volunteers No
Gender Both
Age group 18 Years to 90 Years
Eligibility Inclusion Criteria:

1. Undergoing unilateral primary total knee arthroplasty

2. Males and non-pregnant females ages 18-90 (pre-menopausal females will undergo a serum pregnancy test at screening)

3. Full weight bearing status (of non-operated leg) following surgery

4. Patient able to understand and willing to sign informed consent

Exclusion Criteria:

- 1) Known hypersensitivity to contrast media 2) Patients taking Metformin 3) Serum creatinine above 180Fmol/L 4) Platelets < 100 x 10 9/L, INR/PTT > 1.5 x normal 5) History of heparin induced thrombocytopenia 6) Allergy to heparin or fish 7) Prior use of protamine sulfate (i.e., protamine-containing insulin) 8) Vasectomized or infertile males 9) History of bleeding disorder 10) Bilateral total knee arthroplasty 11) History of stroke or myocardial infarction in previous 6 months 12) Traumatic spinal anaesthesia (two or more attempts and/or bloody) 13) History of previous DVT/PE 14) Active peptic ulcer disease (e.g., GI bleed, rectal bleed) 15) Currently on chronic anticoagulant therapy 16) Contra-indication to heparin 17) Patient is taking part in any other investigational study 18) Previous contralateral TKR or hip replacement

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Prevention


Related Conditions & MeSH terms


Intervention

Drug:
unfractionated heparin
Five minutes prior to tourniquet inflation, patients will receive 0.1 ml/kg/minute of intravenous (IV) unfractionated heparin (1000 units/ml) or placebo (normal saline solution). Five minutes will be allowed to elapse to ensure complete systemic heparinization. The operated limb will then be elevated and exsanguinated using an Esmarch bandage. Following cuff inflation, the contents of a second syringe will be administered IV over a 5 minute period. The second syringe will contain either protamine sulfate (1.0 mg/kg) to reverse the systemic heparin for patients in the treatment group, or normal saline for the control group. Study drugs will be administered by the anaesthesiologist via a peripheral IV. This new method of intraoperative regional heparinization has been used in two previous studies (Giachino et al., 2001; Giachino et al., 1985) with no adverse effects noted.

Locations

Country Name City State
Canada Ottawa Hospital Ottawa Ontario

Sponsors (1)

Lead Sponsor Collaborator
Ottawa Hospital Research Institute

Country where clinical trial is conducted

Canada, 

Outcome

Type Measure Description Time frame Safety issue
Primary DVT as determined by venography 5 day post op No
Secondary Bleeding rate Rate of PE Complication Rate 2 week post op No
See also
  Status Clinical Trial Phase
Completed NCT04657926 - A Trial of APPA in the Treatment of Knee Osteoarthritis Phase 2
Completed NCT02536833 - A Study Evaluating the Safety, Tolerability, and Efficacy of SM04690 Injected in the Target Knee Joint of Moderately to Severely Symptomatic Osteoarthritis Subjects Phase 2
Completed NCT03014037 - Comparing Mesenchymal Stem Cell Counts in Unilateral vs. Bilateral Posterior Superior Iliac Spine Bone Marrow Aspiration N/A
Recruiting NCT05937542 - A Qualitative Investigation of CLEAT Participants
Completed NCT03644615 - A Mindfulness Program (MBSR) in the Management of Symptomatic Hip and Knee Osteoarthritis N/A
Recruiting NCT06061367 - Muscles Strength and Gait Parameteres After TKA
Withdrawn NCT04976972 - A Comparison of Patients Receiving a Total Knee Replacement With Robotic Assistance or With Conventional Instrumentation N/A
Completed NCT05496205 - A SAD Study to Evaluate the Safety, Tolerability and PK/PD of iN1011-N17 in Healthy Volunteers Phase 1
Completed NCT03850665 - Comparison of Functional Outcome in Patients After Hip Arthroplasty Depending on Surgical Approach N/A
Completed NCT02826902 - Effect of Anesthesia on Quality of Recovery in Patients Undergoing Correctional Tibial Osteotomy - A Randomized Controlled Trial N/A
Completed NCT04402502 - Dynamic 4DCT to Examine Wrist Carpal Mechanics N/A
Completed NCT02923700 - Leukocyte-rich PRP vs Leukocyte-poor PRP for the Treatment of Knee Cartilage Degeneration: a Randomized Controlled Trial Phase 4
Completed NCT04564053 - Study of Safety, Tolerability and Pharmacokinetics of LNA043 in Japanese Osteoarthritis Participants Phase 1
Completed NCT05070871 - A Clinical Trial Investigating the Effect of Salmon Bone Meal on Osteoarthritis Among Men and Women N/A
Not yet recruiting NCT05036174 - Diphenhydramine Ointment for Knee Osteoarthritis N/A
Recruiting NCT02666443 - Low Dose Dexamethasone in Supraclavicular Blocks N/A
Recruiting NCT02912429 - Onlay vs. Inlay Patellofemoral Arthroplasty N/A
Active, not recruiting NCT02723929 - Effects of tDCS and tUS on Pain Perception in OA of the Knee
Withdrawn NCT02921594 - Kinematic Comparison of Vanguard XP and Vanguard CR Total Knee Arthroplasties N/A
Terminated NCT02820766 - Journey II BCS CMS Total Knee System Compared to Other PS Total Knee Systems in PT Setting N/A