Microaspiration of contaminated oropharyngeal secretions and gastric contents frequently occurs in intubated critically ill patients, and plays a major role in the pathogenesis of ventilator-associated pneumonia. Quantitative pepsin measurement in tracheal aspirates would be useful in diagnosing microaspiration of gastric contents in intubated critically ill patients. Technetium 99m labelled enteral feeding is the gold standard for the diagnosis of microaspiration. The investigators hypothesized that tracheal pepsin measurement is a good diagnosis marker of microaspiration compared to the gold standard.
Microaspiration of contaminated oropharyngeal secretions and gastric contents frequently occurs in intubated critically ill patients, and plays a major role in the pathogenesis of ventilator-associated pneumonia Quantitative pepsin measurement in tracheal aspirates would be useful in diagnosing microaspiration of gastric contents in intubated critically ill patients Technetium 99m labelled enteral feeding is the gold standard for the diagnosis of microaspiration. We hypothesized that tracheal pepsin measurement is a good diagnosis marker of microaspiration compared to the gold standard
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
12 MBq of NanoCis added to 500 ml of enteral feeding
ICU, Calmette Hospital, University Hospital of Lille
Lille, France
incidence of pepsin levels ≥200 ng / ml
Sensibility and sensitivity of Pepsin for the diagnosis of microaspiration will be determined with regard to 99m technetium (gold standard).
Time frame: from the start to 6 hours after beginning of 99m technetium labelled enteral feeding
likelihood ratio of pepsin of microregurgitation
Sensibility and sensitivity of Pepsin for the diagnosis of microregurgitation will be determined with regard to 99m technetium.
Time frame: from the start to 6 hours after beginning of 99m technetium labelled enteral feeding
likelihood ratio of pepsin of microaspiration
positive and negative predictive values, positive and negative likelihood ratio of pepsin for the diagnosis of microaspiration compared to the 99m technetium (gold standard)
Time frame: from the start to 6 hours after beginning of 99m technetium labelled enteral feeding
Youden Index
Youden Index and ROC curve analysis of the Pepsin as a marker for the diagnosis of microaspiration compared to the 99m Technetium (gold standard)
Time frame: from the start to 6 hours after beginning of 99m technetium labelled enteral feeding
ROC curve
Youden Index and ROC curve analysis of the Pepsin as a marker for the diagnosis of microaspiration compared to the 99m Technetium (gold standard)
Time frame: from the start to 6 hours after beginning of 99m technetium labelled enteral feeding
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