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

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 airway , inserted into the endotracheal tube via the closed suction system; T tube_centre and T tube_wall , embedded within the endotracheal tube 0.5 mm and 1.6 mm from the tube wall, respectively). Univariate analysis showed that inspiratory T tube_centre and inspiratory T tube_wall were positively correlated with inspiratory T airway (both p