Postoperative Drainage in Total Knee Arthroplasty in the Presence of Tranexamic Acid

February 12, 2021 updated by: Afonso Cardoso, Hospital Beatriz Ângelo

Postoperative Drainage in Total Knee Arthroplasty in the Presence of Tranexamic Acid: a Clinical Trial

The investigator's aim with this study is to address, with the new paradigm of tranexamic acid, the role of wound drainage following total knee arthroplasty in blood loss, blood transfusion requirements and functional recovery

Study Overview

Status

Recruiting

Detailed Description

All participants will attend a preoperatory appointment with an anaesthesiologist where preoperative haemoglobin will be optimized (Hg > 13 g/L).

Randomization will be done by opening a closed envelop with the selected group from a bag at the time of wound closure.

Collected preoperative information will include age, gender, weight, height, body-mass index, underlying diseases, operated side, haematocrit, haemoglobin level, midpatellar knee circumference and range of movement. Blood work was performed within 1 hour of the beginning of the surgery. Clinical parameters will be collected before anaesthesia.

In all cases, the surgeon will perform a medial parapatellar approach with a standard incision with the participants in the supine position. The SIGMA PFC total knee system (DePuy, Warsaw, In) and its posterior-stabilized design with a rotatory platform will be used. All participants will be under a subarachnoid spinal block.

A tourniquet will be used (pressure of 350 mmHg) from the beginning of the surgery and deflated for haemostasis before wound closure. At this time, before complete water-tight fascial closure, the patients will be allocated to group With or Without drain as described, and a drain will be placed in a subfascial position. The drain will be left clamped for 1 hour and will be left in place for 24 hours. Compressive dressings will be applied at the end of the surgery. Continuous passive motion will be started within 24 hours of surgery (0-60°, progressing as tolerated).

In all participants, about 30min before tourniquet release, intravenous tranexamic acid will be used with an initial bolus of 10 mg/kg administered in 10min followed by a perfusion of 10mg/kg over 4h. For postoperative analgesia, a femoral triangle and a popliteal block (anterior approach) will be done in all participants.

A standard fluid therapy of a balanced crystalloid solution (perfusion 10ml/kg/h) will be administered to all patients. After tourniquet release, during haemostasis and in the recovery room, an eventual need of increasing fluid therapy perfusion or a bolus will be noted in the patient's file.

Hidden blood loss will be calculated according to the haemoglobin balance method as it suggested to be the most reliable method. Total blood volume will be calculated as described by Nadler et al.

The normality of the data will be tested with the Shapiro-Wilk test/Kolmogorov-Smirnov test. The data will be compared and analyzed using Student's t-test for independent samples, or the Mann-Whitney test, according to the normality of the data. The correlation of data will be analyzed with the Pearson or Spearman correlation coefficient according to its normality. Nominal variables will be compared using the chi-square test. P-values less than 0.05 will be considered significant. Dedicated statistical software (SPSS version 21, SPSS Inc., Chicago, USA) will be used.

Study Type

Interventional

Enrollment (Anticipated)

42

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Consecutive patients admitted to perform a primary unilateral total knee arthroplasty

Exclusion Criteria:

  • Contraindication to take tranexamic acid
  • hematologic disease with a higher risk of bleeding
  • abnormal coagulation tests
  • refusal of blood transfusions
  • inadequate preoperatory optimization
  • deformity >15⁰ of varus or valgus

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: With drain
Participants who received a drain during surgery
Introduction of a drain before full fascial closure
No Intervention: Without drain
Participants who did not receive a drain during surgery

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Total RBC loss
Time Frame: 96 hours
Total red blood cells loss after surgery
96 hours
Total RBC loss
Time Frame: 24 hours
Total red blood cells loss after surgery
24 hours
Total RBC loss
Time Frame: 1 hour
Total red blood cells loss after surgery
1 hour
Blood transfusion requirements
Time Frame: 96 hours
Blood transfusions requirements
96 hours
Knee Society Score score
Time Frame: 14 days
Knee Society Score measuring function of Knee (0-100 total score, higher values, better outcome)
14 days

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Haematocrit level
Time Frame: 1 hour
Haematocrit level
1 hour
Haematocrit level
Time Frame: 24 hours
Haematocrit level
24 hours
Haematocrit level
Time Frame: 96 hours
Haematocrit level
96 hours
Haemoglobin level
Time Frame: 1 hour
Haemoglobin level
1 hour
Haemoglobin level
Time Frame: 24 hours
Haemoglobin level
24 hours
Haemoglobin level
Time Frame: 96 hours
Haemoglobin level
96 hours
Surgery duration
Time Frame: 0hour
Surgery duration (min)
0hour
Length of skin incision
Time Frame: 0 hour
Length of skin incision
0 hour
Tourniquet duration
Time Frame: 0 hour
Tourniquet duration (min)
0 hour
Surgical blood loss
Time Frame: 0 hour
Surgical blood loss (mL)
0 hour
Iron
Time Frame: 96 hours
Iron products used
96 hours
Transfusion reactions
Time Frame: 96 hours
Transfusion reactions
96 hours
Drain volume
Time Frame: 24 hours
Drain volume (mL)
24 hours
MKC
Time Frame: 48 hours
Midpatellar Knee Circumference (cm)
48 hours
MKC
Time Frame: 96 hours
Midpatellar Knee Circumference (cm)
96 hours
MKC
Time Frame: 14 days
Midpatellar Knee Circumference (cm)
14 days
ROM
Time Frame: 48 hours
Range of motion (°)
48 hours
ROM
Time Frame: 96 hours
Range of motion (°)
96 hours
ROM
Time Frame: 14 days
Range of motion (°)
14 days
Fluidotherapy excess
Time Frame: 96 hours
Fluidotherapy excess (mL)
96 hours
Wound complications (i. e., wound dehiscence, infection)
Time Frame: 14 days
Wound complications (i. e., wound dehiscence, infection)
14 days
Lower leg deep vein thrombosis
Time Frame: 14 days
Lower leg deep vein thrombosis
14 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Afonso Cardoso, Hospital Beatriz Angelo

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

August 22, 2019

Primary Completion (Anticipated)

May 1, 2022

Study Completion (Anticipated)

July 1, 2022

Study Registration Dates

First Submitted

April 12, 2019

First Submitted That Met QC Criteria

April 15, 2019

First Posted (Actual)

April 16, 2019

Study Record Updates

Last Update Posted (Actual)

February 15, 2021

Last Update Submitted That Met QC Criteria

February 12, 2021

Last Verified

February 1, 2021

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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