Article (Scientific journals)
Algorithmic Processing of Pressure Waveforms to FacilitateEstimation of Cardiac Elastance
Stevenson, D.; Revie, J.; Chase, J. G. et al.
2012In BioMedical Engineering OnLine, 11, p. 28
Peer Reviewed verified by ORBi
 

Files


Full Text
1475-925X-11-28.pdf
Publisher postprint (424.3 kB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Abstract :
[en] Introduction: Cardiac elastances are highly invasive to measure directly, but are clinically useful due tothe amount of information embedded in them. Information about the cardiac elastance, which can be used toestimate it, can be found in the downstream pressure waveforms of aortic pressure (Pao) and the pulmonaryartery (Ppa). However these pressure waveforms are typically noisy and biased, and require processing in orderto locate the specific information required for the cardiac elastance estimation. This paper presents the methodto algorithmically process the pressure waveforms. Methods: A shear transform is developed in order to helplocate information in the pressure waveforms. This transform turns difficult to locate corners into easy to locatemaximum or minimum points as well as providing error correction. Results: The method located all points 87out of 88 waveforms for Ppa to within the sampling frequency. For Pao, out of 616 total points, 605 were foundwithin 1%, 5 within 5%, 4 within 10% and 2 within 20%. Conclusions: The presented method provides arobust, accurate and dysfunction independent way to locate points on the aortic and pulmonary artery pressurewaveforms, allowing the non-invasive estimation of the left and right cardiac elastance.
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Stevenson, D.
Revie, J.
Chase, J. G.
Hann, C. E.
Shaw, G. M.
LAMBERMONT, Bernard  ;  Centre Hospitalier Universitaire de Liège - CHU > Frais communs médecine
GHUYSEN, Alexandre ;  Centre Hospitalier Universitaire de Liège - CHU > Urgences
Kolh, Philippe  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biochimie et physiologie générales, humaines et path.
Desaive, Thomas  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Thermodynamique des phénomènes irréversibles
Language :
English
Title :
Algorithmic Processing of Pressure Waveforms to FacilitateEstimation of Cardiac Elastance
Publication date :
2012
Journal title :
BioMedical Engineering OnLine
eISSN :
1475-925X
Publisher :
BioMed Central, London, United Kingdom
Volume :
11
Pages :
28
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 September 2012

Statistics


Number of views
89 (9 by ULiège)
Number of downloads
141 (4 by ULiège)

Scopus citations®
 
15
Scopus citations®
without self-citations
0
OpenCitations
 
12

Bibliography


Similar publications



Contact ORBi