Abstract
Cuffed endotracheal tubes are being used increasingly for pediatric patients on mechanical ventilation. Appropriate placement of the tube tip for Microcuff (Kimberley-Clark, Roswell, GA) pediatric endotracheal tube is guided by the intubation depth mark on the device. However, inappropriately deep tip position is sometimes observed during PICU stay. The purpose of this study was to assess the occurrence and risk factors of inappropriately deep tip position of Microcuff pediatric endotracheal tube during PICU stay. A retrospective cohort study. The PICU at the National Center for Child Health and Development, one of the largest tertiary pediatric hospitals in Japan. All patients on mechanical ventilation with Microcuff pediatric endotracheal tube admitted between February 1, 2015, and July 31, 2016, were enrolled. None. The primary outcome was the occurrence of inappropriately deep tip position, defined as a position of the tube tip less than 5 mm above the carina on a chest radiograph. There were 179 cases (157 patients) requiring mechanical ventilation with Microcuff pediatric endotracheal tube during the study period. An inappropriately deep tip position was found in 42 cases (23.5%), including bronchial intubation in 13 cases (7.3%). In multivariate analysis, height in cm (odds ratio, 0.93; p < 0.001), history of abdominal disease or previous abdominal surgery (odds ratio, 4.38; p = 0.004), and oversized endotracheal tube (odds ratio, 2.93; p = 0.042) were found to be independent risk factors. The occurrence of inappropriately deep tip position of Microcuff pediatric endotracheal tube during PICU stay was 23.5%. The possibility of an inappropriately deep tip position should be considered whenever patients with the above risk factors, a history of abdominal disease or previous abdominal surgery, and small children are treated or when oversized endotracheal tubes are used.
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