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The effect of body position changes on stroke volume variation in 66 mechanically ventilated patients with sepsis.
MedLine Citation:
PMID:  22459159     Owner:  NLM     Status:  Publisher    
PURPOSE: The aim of the study was to investigate the effect of body position changes on the stroke volume (SI) variation (SVV) in ventilated patients with sepsis. METHODS: Sixty patients with sepsis were studied during mechanical ventilation. All patients were randomly placed in the supine, 30° head-up, 30° left or right recumbent, or prone position. In addition to standard hemodynamic monitoring, SVV, central venous pressure, cardiac index (CI), SV index (SVI), global end-diastolic volume index (GEDVI), and global ejection fraction (GEF) were recorded at each position after stabilization. RESULTS: Stroke volume variation had strong negative correlation with CI, SVI, GEF, and GEDVI (P < .0001). After the change to the 30° head-up or the prone position, SVV increased significantly, whereas CI, SVI, GEF, and GEDVI decreased dramatically. Stroke volume variation in the supine position did not correlate with 30° head-up- or prone-induced changes in CI (P < .05). All variables did not differ between 30° left or right recumbent and supine positions. CONCLUSIONS: Body position changes may affect the correlation of SVV with hemodynamic variables. The 30° head-up and prone positions increased SVV because of the associated decreased SV. The 30° left or right recumbent position does not affect SVV and SV.
Yu Daihua; Chai Wei; Sun Xude; Yao Linong; Gao Changjun; Zhao Hui
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-27
Journal Detail:
Title:  Journal of critical care     Volume:  -     ISSN:  1557-8615     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8610642     Medline TA:  J Crit Care     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Inc. All rights reserved.
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