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Airway gas temperature within endotracheal tube can be monitored using rapid response thermometer.


ABSTRACT: Inappropriate preparation of respiratory gases is associated with serious complications during mechanical ventilation. To develop a temperature monitoring system of respiratory gases within the endotracheal tube, four newborn piglets were studied using an ultra-rapid-response thermometer attached to the closed endotracheal tube suction system. Respiratory gas temperatures were monitored at the mouth-corner level of the endotracheal tube using three thermocouples (Tairway, inserted into the endotracheal tube via the closed suction system; Ttube_centre and Ttube_wall, embedded within the endotracheal tube 0.5 mm and 1.6 mm from the tube wall, respectively). Univariate analysis showed that inspiratory Ttube_centre and inspiratory Ttube_wall were positively correlated with inspiratory Tairway (both p < 0.001). Multivariate analysis showed the dependence of inspiratory Tairway on inspiratory Ttube_centre and Ttube_wall and deflation of endotracheal tube cuff (p < 0.001, p = 0.001 and p = 0.046, respectively). Inspiratory gas temperature within the endotracheal tube can be monitored using a thermometer attached to the closed endotracheal tube suction system. Our system, with further validation, might help optimise respiratory gas humidification during mechanical ventilation.

SUBMITTER: Nakane S 

PROVIDER: S-EPMC8100119 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature

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Airway gas temperature within endotracheal tube can be monitored using rapid response thermometer.

Nakane Shigeharu S   Tsuda Kennosuke K   Kinoshita Masahiro M   Kato Shin S   Iwata Sachiko S   Lin Yung-Chieh YC   Mizuno Mihoko M   Saitoh Shinji S   Iwata Osuke O  

Scientific reports 20210505 1


Inappropriate preparation of respiratory gases is associated with serious complications during mechanical ventilation. To develop a temperature monitoring system of respiratory gases within the endotracheal tube, four newborn piglets were studied using an ultra-rapid-response thermometer attached to the closed endotracheal tube suction system. Respiratory gas temperatures were monitored at the mouth-corner level of the endotracheal tube using three thermocouples (T<sub>airway</sub>, inserted int  ...[more]

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