Efficacy and Safety of Topical Application of Tranexamic Acid for Saving Blood Losses in Patients Subjected to Prosthetic Knee Surgery

Study Overview
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Brief Summary
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To compare the efficacy and safety of topical tranexamic acid versus placebo in patients diagnosed with severe knee osteoarthritis who will undergo prosthetic knee surgery in terms of saving blood loss (estimated blood loss, decreased hemoglobin and Decrease in hematocrit).

Detailed Description
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Tranexamic acid (Amchafibrin) exerts an antihemorrhagic activity by inhibiting the fibrinolytic properties of plasmin. Tranexamic acid binds to plasminogen when it is transformed into plasmin. The activity of the tranexamic acid-plasmin complex on fibrin activity is less than the activity of free plasmin alone. There are two methods of presentation: one, as an injectable solution; Two as a clear, colorless aqueous solution. Tranexamic acid in Spain is approved for use in the prevention and treatment of bleeding due to general fibrinolysis. As for its specific indications the investigators find that it is used for the treatment of metrorrhagia, menorrhagia, gastrointestinal hemorrhage, urinary hemorrhagic disorders after prostate surgery, surgery of ears, nose, throat, gynecological, thoracic, abdominal or cardiovascular or to counter associated hemorrhages To the administration of a fibrinolytic drug.

Official Title
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Randomized, Placebo-controlled, Double-blind Trial to Evaluate the Efficacy and Safety of Topical Application of Tranexamic Acid for Saving Blood Losses in Patients Subjected to Prosthetic Knee Surgery

Conditions
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Osteoarthritis, Knee

Intervention / Treatment
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* Drug: Amchafibrin
* Other: Saline Solution


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients of both sexes, in the age group: ≥18 and ≤80 years. Patients diagnosed with confirmation of severe knee osteoarthritis according to Kellgren criteria (equal or greater than 2) and EVA greater than 7, who will be subjected to knee arthroplasty surgery. Patients signing informed consent, agreeing to participate in the study. Exclusion Criteria: Patients with concomitant cardiac disease: unstable angina pectoris, acute myocardial infarction, atrial fibrillation, flutter, history of sudden death, severe valve insufficiency. Patients with concomitant previous thromboembolic disease: Deep venous thrombosis, pulmonary thromboembolism, thrombotic arterial embolism, Ischemic Vascular Cerebral Stroke, fibrinolytic diseases after consumption coagulopathy. Hypersensitivity to tranexamic acid. Severe systemic disease: cardio-pulmonary, neurological, renal, infectious or any other type that may impede the development of the study or evaluation of the results. History of seizures. Patients with severe mental disorder (psychotic disorder, risk of autolysis, manic episode), dependence on toxic substances and / or some physical or psychological limitation to answer. Patients receiving oral anticoagulants. Patients in litigation for disability claim related or not with the disease. Patients who cannot make the necessary visits to carry out the study. Patients who refuse to participate or sign informed consent. Pregnant and lactating patient's period.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Amchafibrin<br>Estimated total blood loss, measured using the formula described by Nadler. A difference in estimated blood loss greater than or equal to 245 ml will be considered clinically relevant. | Drug: Amchafibrin<br>* Tranexamic acid (Amchafibrin) exerts an antihemorrhagic activity by inhibiting the fibrinolytic properties of plasmin.<br>|
| Placebo Comparator: Saline Solution 0,9%.<br>Comparator of tranexamic acid | Other: Saline Solution<br>* Placebo<br>* Other names: Placebo;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Saving blood loss in knee surgery | Total blood loss greater than 245 ml | 24 hours post-intervention | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Time post-intervention of functional recovery in study subjects |  | Four weeks post-discharger | 
| Length of hospital stay in study subjects |  | Four weeks post-discharger | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Osteoarthritis, Tranexamic acid