Does automatic tube compensation change metabolic parameters when added to pressure support mode during weaning?

I Karaca,K Demirag,A Kuntman,M Uyar,A Comert

doi:10.1186/2197-425x-3-s1-a321

Abstract

Artificial airway increases work of breathing (WOB) during weaning [1] which is one of the reasons for weaning failure [2]. Pressure support ventilation (PSV) decreases WOB and oxygen expenditure by decreasing resistance caused by artificial airway. Because inspiratory flow changes with every breath during PSV, it can not constantly compansate the changes in resistance caused by changes due to patient's inspiratory effort. Automatic tube compensation (ATC) compensates the imposed WOB due to artificial airway. ATC adjusts the pressure inside the endotracheal tube therefore we hypothesized that when ATC is added to PSV, this compensation becomes better.

Highlights

Artificial airway increases work of breathing (WOB) during weaning [1] which is one of the reasons for weaning failure [2]
Automatic tube compensation (ATC) adjusts the pressure inside the endotracheal tube we hypothesized that when ATC is added to Pressure support ventilation (PSV), this compensation becomes better
After obtaining normal blood gas values at the end of a stabilization period with PSV, metabolic parameters were measured for 30 min and average values of oxygen consumption (V02), carbondioxide production (VC02) and energy expenditure (EE) were recorded

Summary

Introduction

Artificial airway increases work of breathing (WOB) during weaning [1] which is one of the reasons for weaning failure [2]. Pressure support ventilation (PSV) decreases WOB and oxygen expenditure by decreasing resistance caused by artificial airway. Because inspiratory flow changes with every breath during PSV, it can not constantly compansate the changes in resistance caused by changes due to patient’s inspiratory effort. Automatic tube compensation (ATC) compensates the imposed WOB due to artificial airway. ATC adjusts the pressure inside the endotracheal tube we hypothesized that when ATC is added to PSV, this compensation becomes better

Objectives

Methods

Conclusion