Estimating afterload, systemic vascular resistance and pulmonary vascular resistance in an intensive care setting

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dc.contributor.authorStevenson, D.J.
dc.contributor.authorRevie, J.A.
dc.contributor.authorChase, Geoff
dc.contributor.authorShaw, Geoff
dc.contributor.authorLambermont, B.
dc.contributor.authorGhuysen, A.
dc.contributor.authorKolh, P.
dc.contributor.authorDesaive, T.
dc.date.accessioned2013-01-15T03:02:52Z
dc.date.available2013-01-15T03:02:52Z
dc.date.issued2012en
dc.descriptioninvited, 6-pagesen
dc.description.abstractPoor management and delayed diagnosis for both pulmonary embolism and septic shock are common and lead to increased cost, length of stay and mortality. Despite a wealth of information coming from commonly placed catheters much of this information remains unknown to an intensive care clinician. Data was gather from two porcine trials, 5 subjects induced with pulmonary embolism, and 5 with septic shock (treated with haemofiltration). Methods for real-time estimating afterload, systemic vascular resistance and pulmonary vascular resistance are presented. Knowledge of these parameters would greatly increase management of patients with pulmonary embolism and septic shock, and help the accuracy and speed of diagnosis. All estimations tracked trends very well. The estimating for afterload has a percentage error of 21.6% in pulmonary embolism and 11.8% in septic shock, systemic vascular resistance has a percentage error of 12.51% and 13.5% for pulmonary embolism and septic shock respectively while pulmonary vascular resistance showed percentage errors of 12.2% and 44.5%. From these estimations, the drop in systemic vascular resistance and afterload can be clearly identified in the septic shock cohort, as well as the recovery after haemofiltration was started, while the pulmonary embolism cohort showed the expected increase in pulmonary vascular resistance.en
dc.identifier.citationStevenson, D.J., Revie, J.A., Chase, J.G., Shaw, G.M., Lambermont, B., Ghuysen, A., Kolh, P., Desaive, T. (2012) Estimating afterload, systemic vascular resistance and pulmonary vascular resistance in an intensive care setting. Budapest, Hungary: 8th IFAC Symposium on Biological and Medical Systems (BMS12), 29-31 Aug 2012. Biological and Medical Systems, 8, 1, 501-506.en
dc.identifier.doihttps://doi.org/10.3182/20120829-3-HU-2029.00112
dc.identifier.urihttp://hdl.handle.net/10092/7355
dc.language.isoen
dc.publisherUniversity of Canterbury. Mechanical Engineeringen
dc.rights.urihttps://hdl.handle.net/10092/17651en
dc.subjectdiagnosisen
dc.subjectphysiological modelsen
dc.subjecttracking characteristicsen
dc.subjectmedical systemsen
dc.subjectmedical applicationsen
dc.subjectsignal analysisen
dc.subjectidentification algorithmsen
dc.subject.anzsrcFields of Research::32 - Biomedical and clinical sciences::3202 - Clinical sciences::320212 - Intensive careen
dc.titleEstimating afterload, systemic vascular resistance and pulmonary vascular resistance in an intensive care settingen
dc.typeConference Contributions - Published
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