Interactions between respiration and systemic hemodynamics. Part II: Practical implications in critical care

François Feihl, Alain F. Broccard

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

In Part I of this review, we have covered basic concepts regarding cardiorespiratory interactions. Here, we put this theoretical framework to practical use. We describe mechanisms underlying Kussmaul's sign and pulsus paradoxus. We review the literature on the use of respiratory variations of blood pressure to evaluate volume status. We show the possibilities of attaining the latter aim by investigating with ultrasonography how the geometry of great veins fluctuates with respiration. We provide a Guytonian analysis of the effects of PEEP on cardiac output. We terminate with some remarks on the potential of positive pressure breathing to induce acute cor pulmonale, and on the cardiovascular mechanisms that at times may underly the failure to wean a patient from the ventilator.

Original languageEnglish (US)
Title of host publicationApplied Physiology in Intensive Care Medicine (Second Edition)
PublisherSpringer Berlin Heidelberg
Pages459-466
Number of pages8
ISBN (Print)9783642017681
DOIs
StatePublished - 2009
Externally publishedYes

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