ORI-Guided Oxygen Therapy During One-Lung Ventilation (ORI-OLV)
Effect of Oxygen Reserve Index-Guided Fraction of Inspired Oxygen Titration on the Incidence of Hyperoxemia During One-Lung Ventilation
High inspired oxygen concentrations (FiO₂) are commonly administered during general anesthesia to prevent hypoxemia. However, excessive oxygen administration may result in hyperoxemia, which has been associated with impaired hypoxic pulmonary vasoconstriction, increased oxidative stress, ventilation-perfusion mismatch, and postoperative pulmonary complications.
During one-lung ventilation (OLV) for thoracic surgery, higher FiO₂ is often required because of increased intrapulmonary shunting, making hyperoxemia a frequent occurrence. The Oxygen Reserve Index (ORI) is a noninvasive pulse oximetry-derived parameter that reflects moderate hyperoxemia (PaO₂ approximately 100-200 mmHg) and may facilitate more precise oxygen titration than pulse oximetry alone.
調査の概要
状態
条件
詳細な説明
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:Tae-Yop Kim
- 電話番号:82-10-8811-6942
- メール:taeyop@gmail.com
研究連絡先のバックアップ
- 名前:Chungsik Oh
- メール:iamchungsik@daum.net
研究場所
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Gwangjin-gu
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Seoul、Gwangjin-gu、韓国、05030
- Konkuk University Medical Center
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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:
- Adults aged ≥19 years
- Scheduled for elective lung surgery requiring one-lung ventilation
- Written informed consent
Exclusion Criteria:
- Severe pulmonary hypertension.
- Left ventricular systolic dysfunction.
Withdrawal Criteria:
- The participant or legally authorized representative requests withdrawal from the study.
- An adverse event occurs that precludes continued participation in the study.
- The planned surgery or study procedures are not performed (e.g., ORI monitoring is not applied or arterial blood gas analysis is not performed).
- Perfusion Index is less than 2 during the study.
- A major violation of the inclusion or exclusion criteria is identified after enrollment.
- The participant fails to comply with the study protocol, potentially affecting the validity of the study outcomes.
- Continued participation is considered not to be in the participant's best interest.
- In the investigator's judgment, any other condition arises that makes continued participation inappropriate.
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:4倍
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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アクティブコンパレータ:ORI-Guided FiO2 Titration
Fraction of inspired oxygen (FiO₂) is titrated using both the Oxygen Reserve Index (ORI) and peripheral oxygen saturation (SpO₂) during one-lung ventilation.
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During one-lung ventilation, FiO₂ is adjusted according to both ORI and SpO₂.
FiO₂ is titrated to maintain SpO₂ ≥98% while keeping ORI above 0 to minimize hyperoxemia.
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アクティブコンパレータ:Conventional SpO₂-Guided FiO₂ Titration
Fraction of inspired oxygen (FiO₂) is titrated using peripheral oxygen saturation (SpO₂) alone according to the institutional standard of care during one-lung ventilation.
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During one-lung ventilation, FiO₂ is adjusted according to SpO₂ alone.
FiO₂ is titrated to maintain SpO₂ ≥98% according to the institutional standard of care.
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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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Incidence of hyperoxemia during one-lung ventilation
時間枠:10 min after initiation of one-lung ventilation during operation
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Hyperoxemia is defined as an arterial partial pressure of oxygen (PaO₂) greater than 125 mmHg measured after initiation of one-lung ventilation.
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10 min after initiation of one-lung ventilation during operation
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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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Peripheral oxygen saturation (SpO₂)
時間枠:10 mins after two-lung ventilation, 10 mins after initiation of one-lung ventilation, and 10 mins after resumption of two-lung ventilation, all time frames are included in anesthesia time
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Peripheral oxygen saturation
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10 mins after two-lung ventilation, 10 mins after initiation of one-lung ventilation, and 10 mins after resumption of two-lung ventilation, all time frames are included in anesthesia time
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Oxygen Reserve Index (ORI)
時間枠:10 mins after two-lung ventilation, 10 mins after initiation of one-lung ventilation, and 10 mins after resumption of two-lung ventilation, all time frames are included in anesthesia time
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Oxygen Reserve Index measured during anesthesia.
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10 mins after two-lung ventilation, 10 mins after initiation of one-lung ventilation, and 10 mins after resumption of two-lung ventilation, all time frames are included in anesthesia time
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Arterial oxygen tension (PaO₂)
時間枠:10 mins after two-lung ventilation, 10 mins after initiation of one-lung ventilation, and 10 mins after resumption of two-lung ventilation, all time frames are included in anesthesia time
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Arterial partial pressure of oxygen measured by arterial blood gas analysis.
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10 mins after two-lung ventilation, 10 mins after initiation of one-lung ventilation, and 10 mins after resumption of two-lung ventilation, all time frames are included in anesthesia time
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Fraction of inspired oxygen (FiO₂)
時間枠:10 mins after two-lung ventilation, 10 mins after initiation of one-lung ventilation, and 10 mins after resumption of two-lung ventilation, all time frames are included in anesthesia time
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Fraction of inspired oxygen administered during anesthesia.
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10 mins after two-lung ventilation, 10 mins after initiation of one-lung ventilation, and 10 mins after resumption of two-lung ventilation, all time frames are included in anesthesia time
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協力者と研究者
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
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。
ORI-Guided FiO2 Titrationの臨床試験
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Tepecik Training and Research Hospital完了