Document Detail


Accuracy of hemodynamic measurements during partial liquid ventilation with perflubron.
MedLine Citation:
PMID:  11029347     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Patients undergoing partial liquid ventilation (PLV) are often monitored with pulmonary artery catheters and receive positive end-expiratory pressure (PEEP). PEEP can dissociate wedge pressure (Pcw) from transmural left atrial pressure (Platm) by elevating pleural pressure and can dissociate Pcw from Pla by elevating alveolar pressure, PLV, like PEEP, also elevates pleural and alveolar pressures. However, the artifacts PLV may cause in measured vascular pressures are unknown. In 6 anesthetized, paralyzed healthy adult sheep, we compared effects of gas ventilation (GV) and PLV with 10 and 30 ml/kg perflubron on pericardial pressure (Pperi), Pcw, Pla, thermodilution cardiac output, and pulmonary artery flow measured with a doppler probe. PEEP was applied from 0-15 mm Hg during GV and PLV. PLV changed pericardial pressure or cardiac output minimally (at PEEP(0), GV: Pperi = -1.7 +/- 0.6 mm Hg, CO = 3. 2 +/- 0.1 L/m; 10 ml/kg perflubron: Pperi = -1.3 +/- 0.6 mm Hg, CO = 3.4 +/- 0.2 L/m; 30 ml/kg perflubron: Pperi = -1.6 +/- 0.7 mm Hg, CO = 3.4 +/- 0.2 L/m; all mean +/- SEM). On PEEP, Pcw agreed with Pla and Platm as well or better during PLV as during gas ventilation. Cardiac output by thermodilution and probe agreed equally well under all conditions. We conclude that hemodynamic values are as accurate during PLV as during gas ventilation.
Authors:
H E Fessler; D Pearse
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of respiratory and critical care medicine     Volume:  162     ISSN:  1073-449X     ISO Abbreviation:  Am. J. Respir. Crit. Care Med.     Publication Date:  2000 Oct 
Date Detail:
Created Date:  2000-11-15     Completed Date:  2000-11-15     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9421642     Medline TA:  Am J Respir Crit Care Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1372-6     Citation Subset:  AIM; IM    
Affiliation:
Pulmonary and Critical Care Medicine, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA. hfessler@welch.jhu.edu
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MeSH Terms
Descriptor/Qualifier:
Animals
Blood Flow Velocity / physiology
Cardiac Output / physiology
Fluorocarbons*
Hemodynamics / physiology*
Liquid Ventilation*
Positive-Pressure Respiration
Pulmonary Wedge Pressure / physiology
Sensitivity and Specificity
Sheep
Chemical
Reg. No./Substance:
0/Fluorocarbons; 423-55-2/perflubron

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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