The impact of the intubation model upon ventilation parameters

Abstract

The impact of various shaped endotracheal tubes on ventilation parameters has been preliminary assessed in this study. Two uncuffed pediatric tubes of different designs: a standard tube (cylindrical) and a new tube of smooth cone shape (3, 3.5 and 4 mm ID) have been examined under IPPV mode ventilation and using infant lung model. The total inspiratory flow resistance (Ri), peak inspiratory preassure (PIP) and work of breathing (WOB) have been determined under intubation with the standard and the cone shaped tube, and also for non-intubated infant lung model. The significant reduction of the Ri, PIP and WOB has been received when the standard tube had been changed with the new cone tube. The results have been confirmed in a case clinic study.