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

François Feihl, Alain F. Broccard

Research output: Contribution to journalReview articlepeer-review

53 Scopus citations

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)
Pages (from-to)198-205
Number of pages8
JournalIntensive Care Medicine
Volume35
Issue number2
DOIs
StatePublished - Feb 2009
Externally publishedYes

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