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.
調査の概要
研究の種類
入学 (推定)
段階
- 適用できない
連絡先と場所
研究連絡先
- 名前:Zanna L Vanterpool, MSc
- 電話番号:71484 613-737-8899
- メール:zvanterpool@ohri.ca
研究場所
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Ontario
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Ottawa、Ontario、カナダ
- The Ottawa Hospital
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コンタクト:
- Zanna L Vanterpool, MSc
- 電話番号:71484 613-737-8899
- メール:zvanterpool@ohri.ca
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Quebec
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Montreal、Quebec、カナダ
- Centre Hospitalier de l'Université de Montréal
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参加基準
適格基準
就学可能な年齢
- 大人
- 高齢者
健康ボランティアの受け入れ
説明
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
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:ダブル
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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実験的:制限的輸血戦略
制限的輸血戦略は、参加者のヘモグロビン値が 70 g/L 未満と測定された場合、またはヘモグロビン目標範囲 70 ~ 80 g/L を維持するために赤血球輸血を投与することから構成されます。
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参加者のヘモグロビンレベルが70 g/L未満と測定された場合、または70〜80 g/Lのヘモグロビン目標範囲を維持するための赤血球輸血。
この戦略は、手術中および術後の麻酔管理室で最大 6 時間まで遵守されます。
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実験的: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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参加者のヘモグロビンレベルが90 g/L未満と測定された場合、または90〜100 g/Lのヘモグロビン目標範囲を維持するための赤血球輸血。
この戦略は、手術中および術後の麻酔管理室で最大 6 時間まで遵守されます。
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この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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30-day overall morbidity or mortality
時間枠: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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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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30-day individual perioperative complications
時間枠: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
時間枠: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)
時間枠: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
時間枠: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
時間枠: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
時間枠: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
時間枠: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
時間枠: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
時間枠: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
時間枠: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)
時間枠: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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協力者と研究者
捜査官
- 主任研究者:Daniel McIsaac, MD、The Ottawa Hospital
- 主任研究者:Guillaume Martel, MD, MSc, FRCSC, FACS、Ottawa Hospital Research Institute
研究記録日
主要日程の研究
研究開始 (推定)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
IPD プランの説明
IPD 共有時間枠
IPD 共有アクセス基準
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.
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
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