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MITRAL PRESSURE HALF-TIME TECHNIQUE FOR ASSESSING SEVERITY OF MITRAL-STENOSIS - ESSENTIAL PARAMETERS
Linköping University, Department of Management and Engineering, Applied Thermodynamics and Fluid Mechanics. Linköping University, The Institute of Technology.
Linköping University, Department of Biomedical Engineering, Physiological Measurements. 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.
1989 (English)In: IMAGES OF THE TWENTY-FIRST CENTURY, PTS 1-6, 1989, Vol. 11Conference paper, Published paper (Refereed)
Abstract [en]

The flow through a stenotic mitral valve, which is mainly determined by the cross-sectional area of the valve and the pressure difference across it, is discussed. The gradient half-time is an attempt to describe the area from the decline in transmitral pressure difference alone. The gradient half-time increases with increasing severity of the stenosis. Besides the area of the mitral valve, there are other factors influencing the gradient half-time. Such factors are the transported volume and the initial pressure gradient. The compliance of the cardiac chambers and the pulmonary venous flow also influence the gradient half-time, but through changes in the pressure difference across the valve. The problem can therefore be analyzed either with or without inclusion of compliance in the calculations

Place, publisher, year, edition, pages
1989. Vol. 11
Series
PROCEEDINGS OF THE ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:liu:diva-117010DOI: 10.1109/IEMBS.1989.95591OAI: oai:DiVA.org:liu-117010DiVA: diva2:802009
Conference
1989 ANNUAL INTERNATIONAL CONF OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOC : IMAGES OF THE TWENTY-FIRST CENTURY
Note

1989 ANNUAL INTERNATIONAL CONF OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOC : IMAGES OF THE TWENTY-FIRST CENTURY, SEATTLE, WA, NOV 09-12, 1989

Available from: 2015-04-10 Created: 2015-04-10 Last updated: 2015-04-22

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Loyd, DanAsk, PerWranne, Bengt

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Applied Thermodynamics and Fluid MechanicsThe Institute of TechnologyPhysiological MeasurementsClinical PhysiologyFaculty of Health SciencesDepartment of Clinical Physiology in Linköping
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