- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT07748663
Blood Transfusion Strategies During Major Surgery (TOPGUN)
The TOPGUN Trial: Threshold for Operative and Postoperative Hemoglobin Trigger for Red Blood Cell Transfusion
The goal of this randomized clinical trial is to address the uncertainty surrounding blood transfusion strategies in the operating room for adult patients undergoing major surgery. The main question it aims to answer is:
Does a higher hemoglobin threshold for blood transfusion during surgery reduce the risk of serious complications or death after surgery compared with a lower hemoglobin threshold?
Researchers will compare a liberal and a restrictive transfusion strategy during surgery and the first few hours of recovery.
Participants will be randomly assigned to one of two blood transfusion strategies. Blood transfusions will be given to maintain either a higher hemoglobin level (90-100 g/L) or a lower hemoglobin level (70-80 g/L) during surgery and while in the recovery room after surgery. Participants will also complete questionnaires about their quality of life and recovery at 30 and 90 days after surgery.
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Studientyp
Einschreibung (Geschätzt)
Phase
- Unzutreffend
Kontakte und Standorte
Studienkontakt
- Name: Zanna L Vanterpool, MSc
- Telefonnummer: 71484 613-737-8899
- E-Mail: zvanterpool@ohri.ca
Studienorte
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Ontario
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Ottawa, Ontario, Kanada
- The Ottawa Hospital
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Kontakt:
- Zanna L Vanterpool, MSc
- Telefonnummer: 71484 613-737-8899
- E-Mail: zvanterpool@ohri.ca
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Quebec
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Montreal, Quebec, Kanada
- Centre Hospitalier de l'Université de Montréal
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Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
- Erwachsene
- Älterer Erwachsener
Akzeptiert gesunde Freiwillige
Beschreibung
Inclusion Criteria:
- Adult patients, age ≥18.
- Elective or urgent surgery.
- Risk of red blood cell transfusion of at least 10 percent.
- Preoperative hemoglobin of less than 130 g/L.
- Intraoperative hemoglobin of < 100 g/L at any time during surgery.
Exclusion Criteria:
- Active major hemorrhage as indication for surgery (e.g. ruptured aneurysm, polytrauma, etc.)
- Acute coronary syndrome or myocardial infarction within the past 6 weeks.
- Cardiac surgery, lung transplantation, or liver transplantation as the indication for surgery (a history of such surgery is allowed)
- Surgery for moderate to severe (Glasgow Coma Scale (GCS) score ≤ 12) traumatic brain injury
- Sickle cell disease (sickle cell trait is allowed)
- Pregnancy or obstetrical surgery
- Patient refusal of blood products
- Inability to provide consent
- Previous randomization in the TOPGUN(-Pilot) trial
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Doppelt
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
|---|---|
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Experimental: Restriktive Transfusionsstrategie
Die restriktive Transfusionsstrategie besteht aus der Verabreichung einer Transfusion roter Blutkörperchen, wenn der Hämoglobinspiegel des Teilnehmers unter 70 g/L gemessen wird oder um einen Hämoglobin-Zielbereich von 70–80 g/L aufrechtzuerhalten.
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Transfusion roter Blutkörperchen, wenn der Hämoglobinspiegel des Teilnehmers unter 70 g/L gemessen wird oder um einen Hämoglobin-Zielbereich von 70–80 g/L aufrechtzuerhalten.
Diese Strategie wird während der Operation und bis zu 6 Stunden in der postoperativen Anästhesiestation eingehalten.
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Experimental: Liberal transfusion strategy
The liberal transfusion strategy will consist of administering red blood cell transfusion when the participant's hemoglobin level is measured below 90 g/L or to maintain a hemoglobin target range of 90-100 g/L.ed to during surgery and up to 6 hours in the post-operative anesthesia care unit.
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Transfusion roter Blutkörperchen, wenn der Hämoglobinspiegel des Teilnehmers unter 90 g/L gemessen wird oder um einen Hämoglobin-Zielbereich von 90–100 g/L aufrechtzuerhalten.
Diese Strategie wird während der Operation und bis zu 6 Stunden in der postoperativen Anästhesiestation eingehalten.
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Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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30-day overall morbidity or mortality
Zeitfenster: From randomization to 30 days post-surgery
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Overall postoperative morbidity and mortality within 30 days after surgery, assessed using the Comprehensive Complication Index (CCI).
Complications will be identified using the Postoperative Morbidity Survey (POMS) and graded according to the Clavien-Dindo classification.
The CCI summarizes all postoperative complications into a continuous score ranging from 0 (no complications) to 100 (death), with higher scores indicating greater postoperative morbidity.
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From randomization to 30 days post-surgery
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Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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30-day individual perioperative complications
Zeitfenster: From randomization to 30 days post-surgery
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The occurrence of individual perioperative complications will be captured using the Postoperative Morbidity Survey (POMS).
Complications will be categorized according to the POMS domains, including pulmonary, infectious, renal, gastrointestinal, cardiovascular, neurological, wound, hematological, and pain-related morbidity.
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From randomization to 30 days post-surgery
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90-day mortality
Zeitfenster: From randomization to 90 days post-surgery
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All-cause mortality within 90 days after surgery, assessed through participant follow-up and review of the medical record.
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From randomization to 90 days post-surgery
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Blood product transfusions (intraoperative and postoperative)
Zeitfenster: From randomization to 30 days post-surgery
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Number of and type of blood product transfusions
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From randomization to 30 days post-surgery
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Change in hemoglobin
Zeitfenster: From preoperative to 30 days post-surgery
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Change in hemoglobin concentration from preoperative baseline through the perioperative and postoperative period, assessed using routine laboratory measurements and reported in grams per liter (g/L).
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From preoperative to 30 days post-surgery
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Estimated blood loss
Zeitfenster: During surgery
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Estimated blood loss in mL as noted in the operative report or anesthesia record
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During surgery
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Intensive care admission
Zeitfenster: From randomization to 30 days post-surgery
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Occurrence of admission to an intensive care unit (ICU)
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From randomization to 30 days post-surgery
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Post-operative length of stay
Zeitfenster: From randomization to hospital discharge (up to 30 days post-surgery)
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Number of days from the date of surgery to the date of discharge from the index hospitalization
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From randomization to hospital discharge (up to 30 days post-surgery)
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Readmission to hospital
Zeitfenster: From discharge to 30 days post-surgery
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Occurrence of readmission to a hospital
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From discharge to 30 days post-surgery
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Patient-reported disability
Zeitfenster: 30 and 90 days post-surgery
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Functional status and disability will be assessed using the World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0).
The WHODAS 2.0 evaluates functioning across six domains: cognition, mobility, self-care, getting along with others, life activities, and participation in society.
Higher scores indicate greater disability and functional impairment.
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30 and 90 days post-surgery
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Patient-reported quality of life
Zeitfenster: 30 and 90 days post-surgery
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Patient-reported health-related quality of life will be assessed using the EuroQol 5-Dimension 5-Level (EQ-5D-5L) questionnaire.
The EQ-5D-5L evaluates mobility, self-care, usual activities, pain/discomfort, and anxiety/depression.
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30 and 90 days post-surgery
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Disease-free and overall survival (participants undergoing cancer resection)
Zeitfenster: 3 and 5 years post-surgery
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For participants undergoing cancer resection, disease-free survival and overall survival will be assessed at 3 and 5 years after surgery through review of the electronic medical record.
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3 and 5 years post-surgery
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Mitarbeiter und Ermittler
Ermittler
- Hauptermittler: Daniel McIsaac, MD, The Ottawa Hospital
- Hauptermittler: Guillaume Martel, MD, MSc, FRCSC, FACS, Ottawa Hospital Research Institute
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Geschätzt)
Primärer Abschluss (Geschätzt)
Studienabschluss (Geschätzt)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Andere Studien-ID-Nummern
- CTO 5736
- 20260417-01T (Andere Kennung: OHSN-REB)
Plan für individuelle Teilnehmerdaten (IPD)
Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?
Beschreibung des IPD-Plans
IPD-Sharing-Zeitrahmen
IPD-Sharing-Zugriffskriterien
Qualified researchers may access coded individual participant data and relevant supporting study documents upon reasonable request. Requests must be submitted to the Principal Investigator and include a detailed research proposal.
Access will be subject to review and approval by the Study Steering Committee, institutional review boards (if applicable), and execution of a signed data access agreement.
Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
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