Semirecumbent position protects from pulmonary aspiration but not completely from gastroesophageal reflux in mechanically ventilated patients.
作者： M Orozco-Levi , A Torres , M Ferrer , C Piera , M el-Ebiary
DOI: 10.1164/AJRCCM.152.4.7551400
关键词: Pulmonary aspiration 、 Gamma counter 、 Anesthesia 、 Medicine 、 Surgery 、 Reflux 、 Mechanical ventilation 、 Esophageal disease 、 Artificial ventilation 、 Supine position 、 Pharynx
摘要: The aim of this study was to evaluate the effect two body positions (supine and semirecumbency) on dynamics gastroesophageal reflux (GER) in 15 patients requiring mechanical ventilation having a nasogastric tube place. Samples gastric contents, pharyngeal bronchial secretions, blood were obtained at baseline every hour during period 5 h after isotopic instillation 37 megabecquerels Tc99m. Radioactivity counting (RAc) performed using gamma counter with correction for decay. Irrespective position, all showed 3, 4, isotope significant increase RAc oropharyngeal contents (p < 0.05, each), indicating GER. Although values pharynx higher supine from 1 through 4 0.05), end (5 h) did not differ between each position. Likewise, slopes regression lines sequential different e...
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