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Subaortic flow profiles in aortic valve disease: a two-dimensional color Doppler study.
Linköping University, Department of Medical and Health Sciences, Clinical Physiology. Linköping University, Faculty of Health Sciences. Linköping University, Center for Medical Image Science and Visualization (CMIV). Östergötlands Läns Landsting, Heart and Medicine Center, Department of Clinical Physiology in Linköping.
Linköping University, Department of Biomedical Engineering, Physiological Measurements. Linköping University, The Institute of Technology.
Linköping University, Department of Management and Engineering, Applied Thermodynamics and Fluid Mechanics. Linköping University, The Institute of Technology.
Linköping University, Department of Medicine and Care, Clinical Physiology. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Heart and Medicine Center, Department of Clinical Physiology in Linköping.
1994 (English)In: Journal of the American Society of Echocardiography, ISSN 0894-7317, E-ISSN 1097-6795, Vol. 7, no 3 Pt 1, 276-285 p.Article in journal (Refereed) Published
Abstract [en]

With time-corrected color Doppler echocardiography, the aortic subvalvular spatial flow velocity profile was registered in two perpendicular planes in 10 patients with aortic valve disease and in 5 healthy control subjects. Patients with predominant aortic valve stenosis had a fairly flat profile, and the subvalvular diameter, obtained from left parasternal two-dimensional tissue imaging, provided a good estimate of the mean of the two transverse flow axes. This explains the accuracy in determination of stroke volume and aortic valve area that is reported in studies on patients with aortic valve stenosis when the continuity equation is used. However, the use of apical pulsed Doppler ultrasound registrations from the left ventricular outflow tract and parasternal two-dimensional echocardiography for flow area calculation may introduce large errors in calculated stroke volume in certain patients with aortic regurgitation and in normal subjects, because of a non-flat spatial velocity profile or an inaccurate estimate of flow area.

Place, publisher, year, edition, pages
1994. Vol. 7, no 3 Pt 1, 276-285 p.
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Medical Laboratory and Measurements Technologies
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URN: urn:nbn:se:liu:diva-116994PubMedID: 8060644OAI: oai:DiVA.org:liu-116994DiVA: diva2:801914
Available from: 2015-04-10 Created: 2015-04-10 Last updated: 2017-12-04

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Sjöberg, Birgitta JaneroAsk, PerLoyd, DanWranne, Bengt

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Clinical PhysiologyFaculty of Health SciencesCenter for Medical Image Science and Visualization (CMIV)Department of Clinical Physiology in LinköpingPhysiological MeasurementsThe Institute of TechnologyApplied Thermodynamics and Fluid MechanicsClinical Physiology
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Journal of the American Society of Echocardiography
Medical Laboratory and Measurements Technologies

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