Diagnostic Modalities for VAP Detection
Assessment of Different Diagnostic Modalities for Detection of Ventilator Associated Pneumonia
調査の概要
詳細な説明
Ventilator associated pneumonia (VAP) is a common cause of nosocomial infection, that can complicate mechanical ventilation and is related to significant utilization of health-care resources.
The diagnosis of VAP is subjected to considerable interobserver variability. The Centers for Disease Control and Prevention (CDC) definition of VAP uses a combination of clinical, radiographic, and micro-biological criteria for diagnosis, but in the absence of a definite diagnostic test, the accurate diagnosis and treatment of VAP is limited.
The clinical pulmonary infection score (CPIS) was developed to objectively diagnose VAP and assign points on the basis of clinical and radiographic data, but its role in diagnosing pneumonia remains controversial .
Lung ultrasound (LUS) is a simple, non irradiating, noninvasive, cost-effective, bedside technique. It has been successfully applied for monitoring aeration and monitoring antibiotic efficacy in ventilator-associated pneumonia (VAP). However, no scientific evidence is yet available on whether LUS reliably improves the diagnosis of VAP.
Quantitative bacterial cultures of the specimen obtained from the lower airways using bronchoscope were proposed for VAP diagnosis with a cut off value of 104 colony-forming unit/ml. However, microbiological cultures cannot guide the early clinical management of patients with a suspected VAP, as they need at least 24 hours for preliminary results. So, starting antibiotics remains a challenge. Moreover, bronchoscopy is not always easy to perform in hypoxemic patients and not promptly available in all ICUs. Therefore, it can be replaced by tracheal aspirate microbiological samples.
研究の種類
入学 (実際)
段階
- 適用できない
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:
- All adult patients mechanically ventilated for at least 48 hours in Respiratory ICU were included in the study.
who had:
- Clinically suspected VAP according to simplified Clinical Pulmonary Infectious Score exceeding 6.
Or new or extension of a radiological image with at least two of the following clinical criteria:
- Body temperature ≥ 38.5 ° C or <36 ° C.
- Leukocytes> 10 * 103 / ml or <4 * 103/ ml or > 10% immature cells (in the absence of other known causes).
- Purulent tracheal secretions.
- Hypoxemia with PaO2 <60 mmHg or a PaO2 / FiO2 <300.
Exclusion Criteria:
- Patients with diagnosis of community acquired pneumonia or hospital acquired pneumonia before starting of mechanical ventilation.
- Patients who are contraindicated for bronchoscopy
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：診断
- 割り当て：非ランダム化
- 介入モデル：単一グループの割り当て
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
実験的：VAP group
patients confirmed diagnosis of VAP with bronchoalveolar lavage
|
endobronchial sampling through bronchoscopy
他の名前：
|
|
実験的：Non VAP group
patients confirmed not VAP with bronchoalveolar lavage
|
endobronchial sampling through bronchoscopy
他の名前：
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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 |
|---|---|---|
|
To detected diagnostic accuracy of chest ultrasound in VAP.
時間枠：3 years
|
To identify sensitivity and specificity of chest ultrasound in VAP diagnosis
|
3 years
|
|
To detected diagnostic accuracy of protected endotracheal aspirate in VAP.
時間枠：3 years
|
To identify sensitivity and specificity of protected endotracheal aspirate in VAP diagnosis
|
3 years
|
|
To detected diagnostic accuracy of usual endotracheal aspirate in VAP.
時間枠：3 years
|
To identify sensitivity and specificity of usual endotracheal aspirate in VAP diagnosis
|
3 years
|
|
To detected diagnostic accuracy of chest X-ray in VAP.
時間枠：3 years
|
To identify sensitivity and specificity of chest X-ray in VAP diagnosis
|
3 years
|
協力者と研究者
スポンサー
出版物と役立つリンク
一般刊行物
- Bouhemad B, Liu ZH, Arbelot C, Zhang M, Ferarri F, Le-Guen M, Girard M, Lu Q, Rouby JJ. Ultrasound assessment of antibiotic-induced pulmonary reaeration in ventilator-associated pneumonia. Crit Care Med. 2010 Jan;38(1):84-92. doi: 10.1097/CCM.0b013e3181b08cdb.
- Nair GB, Niederman MS. Ventilator-associated pneumonia: present understanding and ongoing debates. Intensive Care Med. 2015 Jan;41(1):34-48. doi: 10.1007/s00134-014-3564-5. Epub 2014 Nov 27.
- Mongodi S, Via G, Girard M, Rouquette I, Misset B, Braschi A, Mojoli F, Bouhemad B. Lung Ultrasound for Early Diagnosis of Ventilator-Associated Pneumonia. Chest. 2016 Apr;149(4):969-80. doi: 10.1016/j.chest.2015.12.012. Epub 2015 Dec 22.
研究記録日
主要日程の研究
研究開始 (実際)
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 (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
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