Diagnostic Modalities for VAP Detection
Assessment of Different Diagnostic Modalities for Detection of Ventilator Associated Pneumonia
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
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.
Type d'étude
Inscription (Réel)
Phase
- N'est pas applicable
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
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
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Diagnostique
- Répartition: Non randomisé
- Modèle interventionnel: Affectation à un seul groupe
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Expérimental: VAP group
patients confirmed diagnosis of VAP with bronchoalveolar lavage
|
endobronchial sampling through bronchoscopy
Autres noms:
|
|
Expérimental: Non VAP group
patients confirmed not VAP with bronchoalveolar lavage
|
endobronchial sampling through bronchoscopy
Autres noms:
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
To detected diagnostic accuracy of chest ultrasound in VAP.
Délai: 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.
Délai: 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.
Délai: 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.
Délai: 3 years
|
To identify sensitivity and specificity of chest X-ray in VAP diagnosis
|
3 years
|
Collaborateurs et enquêteurs
Parrainer
Publications et liens utiles
Publications générales
- 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.
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
- Processus pathologiques
- Infections
- Infections des voies respiratoires
- Maladies des voies respiratoires
- Maladies pulmonaires
- Attributs de la maladie
- Infection croisée
- Maladie iatrogène
- Pneumonie nosocomiale
- Pneumonie
- Pneumonie associée au ventilateur
- Mécanismes moléculaires de l'action pharmacologique
- Agents chélatants
- Agents séquestrants
- Dimercaprol
Autres numéros d'identification d'étude
- VAP diagnosis
Informations sur les médicaments et les dispositifs, documents d'étude
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