Carbon dioxide rebreathing during noninvasive mechanical ventilation

Francesco Mojoli; Antonio Braschi

doi:10.1007/978-3-642-11365-9_12

Carbon dioxide rebreathing during noninvasive mechanical ventilation

Francesco Mojoli, Antonio Braschi

IRCCS Fondazione Policlinico San Matteo

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

Partial reinhalation of previously exhaled carbon dioxide (CO₂) may impair the efficacy of noninvasive mechanical ventilation (NIMV) in improving CO₂ removal and unloading ventilatory muscles [1]. At constant alveolar ventilation, any CO₂ concentration above zero in inhaled gases causes an increase of arterial CO₂ tension by an equal amount. Accordingly, significant CO₂ rebreathing increases alveolar ventilation requirements to maintain desired arterial CO₂ tension. This can limit the beneficial effects of inspiratory assistance provided by NIMV. In this chapter, we review general mechanisms of CO₂ rebreathing and the effect of different interfaces, respiratory circuits, and ventilator settings.

Original language	English
Title of host publication	Noninvasive Mechanical Ventilation: Theory, Equipment, and Clinical Applications
Publisher	Springer Berlin Heidelberg
Pages	77-82
Number of pages	6
ISBN (Print)	9783642113642
DOIs	https://doi.org/10.1007/978-3-642-11365-9_12
Publication status	Published - 2010

ASJC Scopus subject areas

Medicine(all)

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10.1007/978-3-642-11365-9_12

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