Osteoarthritis,KneePhase 2NCT03074994
The Comparative Efficacy of Peri-articular and Intraarticular Tranexamic Acid in Total Knee Arthroplasty
A Phase 2 study testing Peri-articular TXA (15 mg/kg), Intraarticular TXA 2 g (40 mL) and TXA combined with multimodal local anesthetic infiltration inject into peri-articular area in people with Osteoarthritis,Knee, run by Thammasat University at 1 site in Thailand.
Trial summary
Post-operative bleeding in total knee arthroplasty (TKA) can result in hypovolemic shock and unnecessity for allogenic blood transfusions. Intravenous and topical tranexamic acid (TXA) have been well established in reducing blood loss postoperatively. Read more about this study
- Who is it for?
- Ages 40 to 90 years
- Conditions the study is for
- Osteoarthritis,Knee
- What is being tested?
- Peri-articular TXA (15 mg/kg), Intraarticular TXA 2 g (40 mL) and TXA combined with multimodal local anesthetic infiltration inject into peri-articular area
- Type of treatment
- Pill or oral medicine, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 108 participants
- Where
- 1 siteThailand
- Study dates
- Oct 2016to Sep 2019
- Phase
- Phase 2
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 40 to 90 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Adult patients with osteoarthritis in need of a TKA
Who cannot join
- Inflammatory arthritis
- Post-traumatic arthritis
- A history of or current venous thromboembolic disease
- Any underlying disease of haemostasis, cirrhosis, chronic renal failure, patients on anticoagulants or strong antiplatelet drugs (e.g. warfarin, clopidogrel)
- Preoperative hemoglobin <10 g/dL or a platelet count < 140,000 /uL3
- Allergy to TXA
Trial locations and contacts
1 site in 1 country.
Piya Pinsornsak, MD contact
Thailand1 site, 1 recruiting
- Recruiting
Thammasat university hospital
Pathum Thani, Klongluang, 12120
Piya Pinsornsak, MD, 02-926-9705, pinpiya2003@yahoo.com
About this study
Official title: The Comparative Efficacy of Peri-articular and Intraarticular Tranexamic Acid in Total Knee Arthroplasty: A Prospective, Double-Blind Randomized, Controlled Trial
Post-operative bleeding in total knee arthroplasty (TKA) can result in hypovolemic shock and unnecessity for allogenic blood transfusions. Intravenous and topical tranexamic acid (TXA) have been well established in reducing blood loss postoperatively. However, there are lack of data on peri-articular TXA injection during TKA. Therefore, the investigators conducted a three-arm prospective, randomized, controlled trial to compare the effectiveness of bleeding reduction of peri-articular TXA injections, intraarticular TXA injections and control group.
Read the detailed description
Patients scheduled for unilateral primary TKA; 108 patients were randomly assigned to receive peri-articular TXA, intraarticular TXA and control group. 36 patients received either: (I) 15 mg/kg peri-articular TXA combined with multimodal local anesthetic infiltration (bupivacaine, morphine, ketorolac and epinephrine) into the anterior soft tissue, medial gutter area, lateral gutter area prior to capsular closure and tourniquet deflation (group 1). (II) 2 g of intraarticular TXA after complete capsular closure just before tourniquet deflation (group 2). (III) Don't receive any route of TXA in control group (group 3). Hemoglobin (Hb) concentrations were measured at 24 and 48 hour, and the number of blood transfusions and knee circumference measurements were recorded. Serum TXA was recorded at 2 and 24 hours after operation. The reviewers were blinded to treatment group.
- Conditions
- Osteoarthritis,Knee
- Being tested
- Peri-articular TXA (15 mg/kg), Intraarticular TXA 2 g (40 mL), TXA combined with multimodal local anesthetic infiltration inject into peri-articular area, TXA 40 mL inject into intraaricular knee capsule
- Keywords
- Tranexamic acid, Peri-articular injection, Intraarticular injection, Total knee arthroplasty, Blood loss
- Medical subject headings
- Osteoarthritis, Knee, Hemorrhage
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Peri-articular TXA (15 mg/kg)Drug
combined with multimodal local anesthetic infiltration (0.5% bupivacaine 100 mg, morphine sulfate 5 mg, 0.1% epinephrine 0.6 mg, and ketorolac 30 mg) mixed NSS up to 75 mL
Intraarticular TXA 2 g (40 mL)Drug
inject separate from multimodal local anesthetic infiltration (0.5% bupivacaine 100 mg, morphine sulfate 5 mg, 0.1% epinephrine 0.6 mg, and ketorolac 30 mg mixed NSS up to 75 mL)
TXA combined with multimodal local anesthetic infiltration inject into peri-articular areaProcedure or surgery
(Anterior soft tissue 25 mL+Medial gutter area 25 mL+Lateral gutter area 25 mL) prior to capsular closure and tourniquet deflation
TXA 40 mL inject into intraaricular knee capsuleProcedure or surgery
after multimodal local anesthetic infiltration (Anterior soft tissue 25 mL+Medial gutter area 25 mL+Lateral gutter area 25 mL) prior to tourniquet deflation
| Study group | Role | What they receive |
|---|---|---|
| Peri-articular tranexamic acid injection | Experimental | TXA combined with multimodal local anesthetic infiltration inject into peri-articular area (Anterior soft tissue+Medial gutter area+Lateral gutter area) Receives: Drug: Peri-articular TXA (15 mg/kg); Procedure: TXA combined with multimodal local anesthetic infiltration inject into peri-articular area |
| Intraarticular tranexamic acid injection | Experimental | TXA inject into intraaricular knee capsule after multimodal local anesthetic infiltration Receives: Drug: Intraarticular TXA 2 g (40 mL); Procedure: TXA 40 mL inject into intraaricular knee capsule |
| Control group | No intervention | Don't receive any route of TXA |
What is being measured
The primary outcome is the main question the study is designed to answer.
Changes from baseline hemoglobin concentrations
Measured: 48 hours after the operation
Unit of blood transfusion
Measured: 48 hours after the operation
Secondary outcomes (7)
Tranexamic acid level in blood
Measured: 2 and 24 hours after the operation
Knee diameter for swelling
Measured: 24 and 48 hours after the operation
Local soft tissue complications
Measured: 14 days after the operation
Skin necrosis
Measured: 24 and 48 hours after the operation
Number of patient with venous thromboembolism
Measured: 14 days after the operation
Visual Analogue Scales
(VAS, 0 = no pain, 10 = the worst imaginable pain)
Measured: 24 and 48 hours after the operation
Knee flexion angle
Measured: 24 and 48 hours after the operation
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Mar 2017
- Study startOct 2016
- Primary completionJun 2019 (estimated)
- Study completionSep 2019 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (20)Papers the sponsor has linked to this study.
- Other trials for Osteoarthritis,KneeStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Outcomes assessor
- Enrolment
- 108 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Thammasat University
- Sponsor type
- University, hospital or other
- Collaborators
- Boontanapibul, Krit, M.D.
- Responsible party
- Principal investigator, piya pinsornsak, Thammasat University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03074994
- Sponsor's protocol ID
- MTU-EC-OT-6-063/59
- Status last verified
- Jun 2018
- First submitted
- 20 Nov 2016
- Last updated
- 24 Apr 2019
- Results posted
- No
- Data monitoring committee
- Yes
- Individual data sharing
- No
Publications
Madjdpour C, Spahn DR. Allogeneic red blood cell transfusions: efficacy, risks, alternatives and indications. Br J Anaesth. 2005 Jul;95(1):33-42. doi: 10.1093/bja/aeh290. Epub 2004 Oct 14.
PubMed 15486006Fiebig E. Safety of the blood supply. Clin Orthop Relat Res. 1998 Dec;(357):6-18. doi: 10.1097/00003086-199812000-00003.
PubMed 9917695Heddle NM, Klama LN, Griffith L, Roberts R, Shukla G, Kelton JG. A prospective study to identify the risk factors associated with acute reactions to platelet and red cell transfusions. Transfusion. 1993 Oct;33(10):794-7. doi: 10.1046/j.1537-2995.1993.331094054613.x.
PubMed 8236418Juelsgaard P, Larsen UT, Sorensen JV, Madsen F, Soballe K. Hypotensive epidural anesthesia in total knee replacement without tourniquet: reduced blood loss and transfusion. Reg Anesth Pain Med. 2001 Mar-Apr;26(2):105-10. doi: 10.1053/rapm.2001.21094.
PubMed 11251132Sharma V, Fan J, Jerath A, Pang KS, Bojko B, Pawliszyn J, Karski JM, Yau T, McCluskey S, Wasowicz M. Pharmacokinetics of tranexamic acid in patients undergoing cardiac surgery with use of cardiopulmonary bypass. Anaesthesia. 2012 Nov;67(11):1242-50. doi: 10.1111/j.1365-2044.2012.07266.x. Epub 2012 Jul 24.
PubMed 22827564Alshryda S, Sarda P, Sukeik M, Nargol A, Blenkinsopp J, Mason JM. Tranexamic acid in total knee replacement: a systematic review and meta-analysis. J Bone Joint Surg Br. 2011 Dec;93(12):1577-85. doi: 10.1302/0301-620X.93B12.26989.
PubMed 22161917Yang ZG, Chen WP, Wu LD. Effectiveness and safety of tranexamic acid in reducing blood loss in total knee arthroplasty: a meta-analysis. J Bone Joint Surg Am. 2012 Jul 3;94(13):1153-9. doi: 10.2106/JBJS.K.00873.
PubMed 22623147Zhang H, Chen J, Chen F, Que W. The effect of tranexamic acid on blood loss and use of blood products in total knee arthroplasty: a meta-analysis. Knee Surg Sports Traumatol Arthrosc. 2012 Sep;20(9):1742-52. doi: 10.1007/s00167-011-1754-z. Epub 2011 Nov 8.
PubMed 22065294Ho KM, Ismail H. Use of intravenous tranexamic acid to reduce allogeneic blood transfusion in total hip and knee arthroplasty: a meta-analysis. Anaesth Intensive Care. 2003 Oct;31(5):529-37. doi: 10.1177/0310057X0303100507.
PubMed 14601276Panteli M, Papakostidis C, Dahabreh Z, Giannoudis PV. Topical tranexamic acid in total knee replacement: a systematic review and meta-analysis. Knee. 2013 Oct;20(5):300-9. doi: 10.1016/j.knee.2013.05.014. Epub 2013 Jun 28.
PubMed 23815893Wang H, Shen B, Zeng Y. Comparison of topical versus intravenous tranexamic acid in primary total knee arthroplasty: a meta-analysis of randomized controlled and prospective cohort trials. Knee. 2014 Dec;21(6):987-93. doi: 10.1016/j.knee.2014.09.010. Epub 2014 Oct 23.
PubMed 25450009Wong J, Abrishami A, El Beheiry H, Mahomed NN, Roderick Davey J, Gandhi R, Syed KA, Muhammad Ovais Hasan S, De Silva Y, Chung F. Topical application of tranexamic acid reduces postoperative blood loss in total knee arthroplasty: a randomized, controlled trial. J Bone Joint Surg Am. 2010 Nov 3;92(15):2503-13. doi: 10.2106/JBJS.I.01518.
PubMed 21048170Jain NP, Nisthane PP, Shah NA. Combined Administration of Systemic and Topical Tranexamic Acid for Total Knee Arthroplasty: Can It Be a Better Regimen and Yet Safe? A Randomized Controlled Trial. J Arthroplasty. 2016 Feb;31(2):542-7. doi: 10.1016/j.arth.2015.09.029. Epub 2015 Sep 26.
PubMed 26507526Konig G, Hamlin BR, Waters JH. Topical tranexamic acid reduces blood loss and transfusion rates in total hip and total knee arthroplasty. J Arthroplasty. 2013 Oct;28(9):1473-6. doi: 10.1016/j.arth.2013.06.011. Epub 2013 Jul 23.
PubMed 23886406Ker K, Beecher D, Roberts I. Topical application of tranexamic acid for the reduction of bleeding. Cochrane Database Syst Rev. 2013 Jul 23;2013(7):CD010562. doi: 10.1002/14651858.CD010562.pub2.
PubMed 23881695
Study at a glance
From the registry record, last updated by the sponsor on 24 Apr 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Comparative Efficacy of Peri-articular and Intraarticular Tranexamic Acid in Total Knee Arthroplasty: A Prospective, Double-Blind Randomized, Controlled Trial
- ClinicalTrials.gov ID
- NCT03074994
- Acronym / sponsor ID
- MTU-EC-OT-6-063/59
- Conditions
- Osteoarthritis,Knee
- Keywords
- Tranexamic acid, Peri-articular injection, Intraarticular injection, Total knee arthroplasty, Blood loss
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 108 participants (estimated)
- Lead sponsor
- Thammasat UniversityUniversity, hospital or other
- Collaborators
- Boontanapibul, Krit, M.D.
- Study start
- Oct 2016
- Primary completion
- Jun 2019 (estimated)
- Study completion
- Sep 2019 (estimated)
- First posted
- 9 Mar 2017 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Post-operative bleeding in total knee arthroplasty (TKA) can result in hypovolemic shock and unnecessity for allogenic blood transfusions. Intravenous and topical tranexamic acid (TXA) have been well established in reducing blood loss postoperatively. However, there are lack of data on peri-articular TXA injection during TKA. Therefore, the investigators conducted a three-arm prospective, randomized, controlled trial to compare the effectiveness of bleeding reduction of peri-articular TXA injections, intraarticular TXA injections and control group.
Detailed description
Patients scheduled for unilateral primary TKA; 108 patients were randomly assigned to receive peri-articular TXA, intraarticular TXA and control group. 36 patients received either: (I) 15 mg/kg peri-articular TXA combined with multimodal local anesthetic infiltration (bupivacaine, morphine, ketorolac and epinephrine) into the anterior soft tissue, medial gutter area, lateral gutter area prior to capsular closure and tourniquet deflation (group 1). (II) 2 g of intraarticular TXA after complete capsular closure just before tourniquet deflation (group 2). (III) Don't receive any route of TXA in control group (group 3). Hemoglobin (Hb) concentrations were measured at 24 and 48 hour, and the number of blood transfusions and knee circumference measurements were recorded. Serum TXA was recorded at 2 and 24 hours after operation. The reviewers were blinded to treatment group.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, outcomes assessor)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Peri-articular tranexamic acid injection | Experimental | Drug: Peri-articular TXA (15 mg/kg), Procedure: TXA combined with multimodal local anesthetic infiltration inject into peri-articular areaTXA combined with multimodal local anesthetic infiltration inject into peri-articular area (Anterior soft tissue+Medial gutter area+Lateral gutter area) |
| Intraarticular tranexamic acid injection | Experimental | Drug: Intraarticular TXA 2 g (40 mL), Procedure: TXA 40 mL inject into intraaricular knee capsuleTXA inject into intraaricular knee capsule after multimodal local anesthetic infiltration |
| Control group | No intervention | –Don't receive any route of TXA |
Who may qualify
- Ages
- 40 to 90 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Adult patients with osteoarthritis in need of a TKA
Key exclusion criteria (6 listed)
- Inflammatory arthritis
- Post-traumatic arthritis
- A history of or current venous thromboembolic disease
- Any underlying disease of haemostasis, cirrhosis, chronic renal failure, patients on anticoagulants or strong antiplatelet drugs (e.g. warfarin, clopidogrel)
- Preoperative hemoglobin <10 g/dL or a platelet count < 140,000 /uL3
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Peri-articular TXA (15 mg/kg)combined with multimodal local anesthetic infiltration (0.5% bupivacaine 100 mg, morphine sulfate 5 mg, 0.1% epinephrine 0.6 mg, and ketorolac 30 mg) mixed NSS up to 75 mL | Drug | Peri-articular tranexamic acid injection |
| Intraarticular TXA 2 g (40 mL)inject separate from multimodal local anesthetic infiltration (0.5% bupivacaine 100 mg, morphine sulfate 5 mg, 0.1% epinephrine 0.6 mg, and ketorolac 30 mg mixed NSS up to 75 mL) | Drug | Intraarticular tranexamic acid injection |
| TXA combined with multimodal local anesthetic infiltration inject into peri-articular area(Anterior soft tissue 25 mL+Medial gutter area 25 mL+Lateral gutter area 25 mL) prior to capsular closure and tourniquet deflation | Procedure or surgery | Peri-articular tranexamic acid injection |
| TXA 40 mL inject into intraaricular knee capsuleafter multimodal local anesthetic infiltration (Anterior soft tissue 25 mL+Medial gutter area 25 mL+Lateral gutter area 25 mL) prior to tourniquet deflation | Procedure or surgery | Intraarticular tranexamic acid injection |
Primary outcome
Changes from baseline hemoglobin concentrations
Time frame: 48 hours after the operation
Unit of blood transfusion
Time frame: 48 hours after the operation
7 secondary outcomes
Tranexamic acid level in blood
Time frame: 2 and 24 hours after the operation
Knee diameter for swelling
Time frame: 24 and 48 hours after the operation
Local soft tissue complications
Time frame: 14 days after the operation
Skin necrosis
Time frame: 24 and 48 hours after the operation
Number of patient with venous thromboembolism
Time frame: 14 days after the operation
Visual Analogue Scales
Time frame: 24 and 48 hours after the operation
Knee flexion angle
Time frame: 24 and 48 hours after the operation
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Apr 2019.
- Results publication: PubMed 15486006Madjdpour C, Spahn DR. Allogeneic red blood cell transfusions: efficacy, risks, alternatives and indications. Br J Anaesth. 2005 Jul;95(1):33-42. doi: 10.1093/bja/aeh290. Epub 2004 Oct 14.
- Results publication: PubMed 9917695Fiebig E. Safety of the blood supply. Clin Orthop Relat Res. 1998 Dec;(357):6-18. doi: 10.1097/00003086-199812000-00003.
- Results publication: PubMed 8236418Heddle NM, Klama LN, Griffith L, Roberts R, Shukla G, Kelton JG. A prospective study to identify the risk factors associated with acute reactions to platelet and red cell transfusions. Transfusion. 1993 Oct;33(10):794-7. doi: 10.1046/j.1537-2995.1993.331094054613.x.
- Results publication: PubMed 11251132Juelsgaard P, Larsen UT, Sorensen JV, Madsen F, Soballe K. Hypotensive epidural anesthesia in total knee replacement without tourniquet: reduced blood loss and transfusion. Reg Anesth Pain Med. 2001 Mar-Apr;26(2):105-10. doi: 10.1053/rapm.2001.21094.
- Results publication: PubMed 22827564Sharma V, Fan J, Jerath A, Pang KS, Bojko B, Pawliszyn J, Karski JM, Yau T, McCluskey S, Wasowicz M. Pharmacokinetics of tranexamic acid in patients undergoing cardiac surgery with use of cardiopulmonary bypass. Anaesthesia. 2012 Nov;67(11):1242-50. doi: 10.1111/j.1365-2044.2012.07266.x. Epub 2012 Jul 24.
- Results publication: PubMed 22161917Alshryda S, Sarda P, Sukeik M, Nargol A, Blenkinsopp J, Mason JM. Tranexamic acid in total knee replacement: a systematic review and meta-analysis. J Bone Joint Surg Br. 2011 Dec;93(12):1577-85. doi: 10.1302/0301-620X.93B12.26989.
- Results publication: PubMed 22623147Yang ZG, Chen WP, Wu LD. Effectiveness and safety of tranexamic acid in reducing blood loss in total knee arthroplasty: a meta-analysis. J Bone Joint Surg Am. 2012 Jul 3;94(13):1153-9. doi: 10.2106/JBJS.K.00873.
- Results publication: PubMed 22065294Zhang H, Chen J, Chen F, Que W. The effect of tranexamic acid on blood loss and use of blood products in total knee arthroplasty: a meta-analysis. Knee Surg Sports Traumatol Arthrosc. 2012 Sep;20(9):1742-52. doi: 10.1007/s00167-011-1754-z. Epub 2011 Nov 8.
- Results publication: PubMed 14601276Ho KM, Ismail H. Use of intravenous tranexamic acid to reduce allogeneic blood transfusion in total hip and knee arthroplasty: a meta-analysis. Anaesth Intensive Care. 2003 Oct;31(5):529-37. doi: 10.1177/0310057X0303100507.
- Results publication: PubMed 23815893Panteli M, Papakostidis C, Dahabreh Z, Giannoudis PV. Topical tranexamic acid in total knee replacement: a systematic review and meta-analysis. Knee. 2013 Oct;20(5):300-9. doi: 10.1016/j.knee.2013.05.014. Epub 2013 Jun 28.
- Results publication: PubMed 25450009Wang H, Shen B, Zeng Y. Comparison of topical versus intravenous tranexamic acid in primary total knee arthroplasty: a meta-analysis of randomized controlled and prospective cohort trials. Knee. 2014 Dec;21(6):987-93. doi: 10.1016/j.knee.2014.09.010. Epub 2014 Oct 23.
- Results publication: PubMed 21048170Wong J, Abrishami A, El Beheiry H, Mahomed NN, Roderick Davey J, Gandhi R, Syed KA, Muhammad Ovais Hasan S, De Silva Y, Chung F. Topical application of tranexamic acid reduces postoperative blood loss in total knee arthroplasty: a randomized, controlled trial. J Bone Joint Surg Am. 2010 Nov 3;92(15):2503-13. doi: 10.2106/JBJS.I.01518.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Piya Pinsornsak, MD contact
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Peri-articular TXA (15 mg/kg), Intraarticular TXA 2 g (40 mL) and TXA combined with multimodal local anesthetic infiltration inject into peri-articular area in people with Osteoarthritis,Knee, run by Thammasat University at 1 site in Thailand.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 24 Apr 2019. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Thailand. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Piya Pinsornsak, MD (pinpiya2003@yahoo.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Changes from baseline hemoglobin concentrations (time frame: 48 hours after the operation). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03074994, which also lists 20 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Apr 2019; AzTrials last refreshed its copy on 7 Nov 2026.