Venous Thrombosis Clinical Trial
Official title:
Tourniquet Study: Is the High Thrombosis Risk After Knee Arthroscopy Caused by Limb-tourniquet Application? A Randomized Clinical Trial Into the Effect of Tourniquet Use on the Coagulation System
NCT number | NCT02567903 |
Other study ID # | NL49117.058.14 |
Secondary ID | |
Status | Completed |
Phase | N/A |
First received | |
Last updated | |
Start date | September 2015 |
Est. completion date | June 2019 |
Verified date | February 2020 |
Source | Groene Hart Ziekenhuis |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
Knee arthroscopy is the most commonly performed orthopaedic procedure worldwide, with, according to the American Society for Sports Medicine, over 4 million procedures performed each year. The risk of venous thrombosis following this procedure is considerable with rates of symptomatic events varying between 0.9% and 4.6%. It is currently unknown how this high risk comes about considering its short duration and minimal tissue damage caused by the procedure. A factor that may play a role is the use of a tourniquet. A large majority of orthopaedic surgeons prefer to operate within a 'dry field', which is obtained by the use of a tourniquet. Tourniquet applied surgery is not without risks. Although its use during orthopedic surgery is widely accepted and a standard procedure, tourniquet use can lead to loss of muscle functional strength and contractile speed, vessel wall damage and nerve injury, next to the possibly increased risk of venous thrombosis. In the proposed study the investigators will investigate the effect of a tourniquet on local and systemic markers of hypoxia, inflammation, involvement of endothelium, and coagulation activation. A finding of more prominent activation of the coagulation system with tourniquet use than with non-use will create an important opportunity to prevent thromboembolic events in these patients, as it has been shown that knee arthroscopy can be performed adequately without the use of a tourniquet. Furthermore, it will increase the understanding of the pathophysiology of thrombosis.
Status | Completed |
Enrollment | 55 |
Est. completion date | June 2019 |
Est. primary completion date | June 2019 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility |
Inclusion criteria - Meniscectomy - Diagnostic arthroscopy - Removal of corpora libera Exclusion Criteria - Any kind of coagulation disorder - pregnant or within 3 months of childbirth - Use of hormonal anticonception - A history of venous thrombosis - Had major surgery in the past two months - A history of cast-immobilization of the lower extremity the past two months - A neoplasm or inflammatory disease - A BMI>30 - using anticoagulant therapy - Any other anaesthesia technique than spinal anaesthesia |
Country | Name | City | State |
---|---|---|---|
Netherlands | Groene Hart Ziekenhuis | Gouda | Zuid Holland |
Lead Sponsor | Collaborator |
---|---|
Groene Hart Ziekenhuis | Leiden University Medical Center |
Netherlands,
Aglietti P, Baldini A, Vena LM, Abbate R, Fedi S, Falciani M. Effect of tourniquet use on activation of coagulation in total knee replacement. Clin Orthop Relat Res. 2000 Feb;(371):169-77. — View Citation
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American Academy of Orthopaedic Surgeons. Knee Arthroscopy. 2013. http://orthoinfo.aaos.org/topic.cfm?topic=a00299. Accessed April 15, 2014
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* Note: There are 20 references in all — Click here to view all references
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change in parameters that reflect a hypoxic state assessed by pH | Change in pH between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Change in parameters that reflect a hypoxic state assessed by pO2 | Change in pO2 between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Change in parameters that reflect a hypoxic state assessed by pCO2 | Change in pCO2 between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Change in parameters that reflect a hypoxic state assessed by Lactate | Change in Lactate between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Change in parameters that reflect an inflammatory reaction assessed by WBCC | Change in White Blood Cell Count (WBCC) between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Change in parameters that reflect an inflammatory reaction and/or endothelium involvement assessed by E-selectin | Change in E-selectin between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Change in parameters that reflect an inflammatory reaction assessed by NETs | Change in Neutrophil Extracellular traps (NETs) between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Outcome parameters that reflect involvement of the endothelium assessed by vWF | Change in Von Willebrand Factor (vWF) between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Outcome parameters that reflect involvement of the endothelium assessed by thrombomodulin. | Change in Thrombomodulin between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Outcome parameters that reflect involvement of the endothelium assessed by f 1+2 | Change in Prothrombin fragments 1+2 (f 1+2) between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Outcome parameters that reflect a procoagulant state and thrombin formation assessed by D-dimer | Change in D-dimer between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Outcome parameters that reflect a procoagulant state and thrombin formation assessed by PAI 1 | Change in Plasmin Activator Inhibitor 1 (PAI 1) between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Outcome parameters that reflect a procoagulant state and thrombin formation assessed by tPA | Change in Tissue plasminogen activator (tPA) between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Outcome parameters that reflect a procoagulant state and thrombin formation assessed by factor VIII | Change in Factor VIII between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Outcome parameters that reflect a procoagulant state and thrombin formation assessed by TAT | Change in Thrombin and Antithrombin complexes (TAT) between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Primary | Outcome parameters that reflect a procoagulant state and thrombin formation assessed by PAP | Change in Plasmin and antiplasmin complexes (PAP) between timepoints | Change in parameters between timepoints; Before surgery (blood drawn approximately 1 hour before surgery), directly after surgery (blood drawn within 5 minutes), 1 hour after surgery. | |
Secondary | Duration of surgery | The total duration of surgery in minutes | intraoperative, duration in minutes between first incision until closure | |
Secondary | Duration of tourniquet use | The total duration of tourniquet inflation in minutes | intraoperative, duration in minutes between tourniquet inflation and deflation | |
Secondary | Per-operative visibility | Visibility during surgery, measured on a Visual Analogue Scale scale (0-10) | Per-operative |
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