Document Detail

Noninvasive estimation of pulmonary capillary wedge pressure from computed radiography.
MedLine Citation:
PMID:  10780148     Owner:  NLM     Status:  MEDLINE    
PURPOSE: This study was undertaken to see if computed radiography (CR) could be used to estimate pulmonary capillary wedge pressure (PCWP). METHODS: Radiographic measurements of pulmonary artery-bronchus ratios (ABR), cardiomegaly, interstitial edema, alveolar edema, and pleural effusion, obtained from portable CR images of patients admitted to an intensive care unit, were compared to hemodynamic measurements of PCWP. We prospectively predicted a normal PCWP when ABR was < or = 1.0, and an elevated PCWP when ABR was > or = 1.1. RESULTS: There was a significant difference between mean ABR in those with normal PCWP (1.014 +/- 0.259) and those with elevated PCWP (1.422 +/- 0.234) (p < 0.0001). There was a positive correlation between PCWP and ABR (r = 0.38, r2 = 0.147, p = 0.0001). ABR was 95% sensitive, 86% specific, and 93% accurate in predicting PCWP (p = 0.0001). Cardiomegaly, interstitial edema, alveolar edema, and pleural effusion were not as useful. CONCLUSIONS: Measurements of ABR from portable CR images can be used to estimate PCWP.
J H Woodring; C A Given
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The Journal of the Kentucky Medical Association     Volume:  98     ISSN:  0023-0294     ISO Abbreviation:  J Ky Med Assoc     Publication Date:  2000 Mar 
Date Detail:
Created Date:  2000-06-29     Completed Date:  2000-06-29     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7505615     Medline TA:  J Ky Med Assoc     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  115-20     Citation Subset:  IM    
Department of Diagnostic Radiology, University of Kentucky Medical Center, Lexington 40536-0084, USA.
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MeSH Terms
Aged, 80 and over
Analysis of Variance
Chi-Square Distribution
Hemodynamics / physiology
Hypertension, Pulmonary / physiopathology,  radiography*
Image Processing, Computer-Assisted
Middle Aged
Predictive Value of Tests
Prospective Studies
Pulmonary Artery / physiopathology,  radiography
Pulmonary Wedge Pressure*
Radiography, Thoracic / methods*
Radiology Information Systems
Sensitivity and Specificity

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

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