High Fresh Gas Flow After Intubation
High Fresh Gas Flow After Intubation - A Randomized Clinical Trial
調査の概要
状態
条件
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
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Västmanland
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Köping、Västmanland、スウェーデン、731 30
- Landstinget Västmanland
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Healthy patients, American Society of Anesthesiology (ASA) I-II
- Patients scheduled for orthopaedic day case surgery in general anaesthesia
Exclusion Criteria:
- ASA class III or higher
- Body Mass Index (BMI) 30 or higher
- Arterial oxygen saturation (SpO2) <94% breathing air
- Chronic Obstructive Pulmonary Disease (COPD)
- Ischemic heart disease
- Haemoglobin <100g/L
- Known or anticipated difficult airway and/or intubation
- Active smokers and ex-smokers with a history of more than 6 pack years
- Need for interscalene or supraclavicular regional anaesthesia with risk of phrenic nerve paralysis
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：防止
- 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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アクティブコンパレータ：Control group, conventional ventilatory settings
Handling of the airway during induction and intubation is performed in a conventional manner. Initial ventilatory settings are also done in a conventional manner. |
Handling of the airway during induction and intubation is performed in a conventional manner. Initial ventilatory settings are also done in a conventional manner. As soon as correct position of the endotracheal tube is confirmed, controlled ventilation is started with a tidal volume of 7 mL/kg ideal body weight, PEEP 6 or 8 cm H2O (8 if BMI >25) and a respiratory frequency of 10. The fresh gas flow is set to 1 Liter per minute with an oxygen mixture of 40%, aiming for an inspired FiO2 of 30-35%. Unless the patient´s SpO2 falls below 90%, the FiO2 remains unchanged throughout the procedure. |
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アクティブコンパレータ：High fresh gas flow, high minute ventilation
Handling of the airway during induction and intubation is performed in a conventional manner. Immediately after confirming a successful intubation the effect of preoxygenation is eliminated with an anti-preoxygenation maneuver. |
Handling of the airway during induction and intubation is performed in a conventional manner. Immediately after confirming a successful intubation, the effect of preoxygenation is eliminated with a fresh gas flow of 10 L/min of air, delivered with volume controlled ventilation consisting of tidal volumes of approximately 15 ml/kg ideal body weight, a positive expiratory pressure of 10 cm H20 and a respiratory frequency of 10. As soon as the end tidal O2 reaches 25%, the ventilator settings are adjusted to normal values (same as in the control group), i.e. tidal volume 7 mL/kg ideal body weight, PEEP 6 or 8 cm H2O (8 if BMI >25). The mixture of oxygen in the fresh gas is increased to 40% and the fresh gas flow is set to 1 Liter per minute, aiming for an inspired FiO2 of 30-35%. Unless the patient´s SpO2 falls below 90%, the FiO2 remains unchanged throughout the procedure. |
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 |
|---|---|---|
|
Atelectasis
時間枠：Within 1-2 hours, just before emergence from anesthesia
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The area of atelectasis in the lungs is assessed by computed tomography (CT) 10 mm above the dome of the right diaphragm and expressed in cm2 and as % of the total lung area in the particular scan.
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Within 1-2 hours, just before emergence from anesthesia
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二次結果の測定
結果測定 |
時間枠 |
|---|---|
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Arterial blood gases
時間枠：Within 2-3 hours perioperatively
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Within 2-3 hours perioperatively
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協力者と研究者
スポンサー
捜査官
- スタディチェア：Mats Enlund, MD, PhD、Landstinget i Värmland
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (実際)
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 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
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。