NDLI: Evaluation of intracoronary pressure and blood flow velocity for the assessment of coronary stenoses severity

Content Provider	IEEE Xplore Digital Library
Author	Perrey, C. Bojara, W. Lindstaedt, M. Fischer, C. Ermert, H.
Copyright Year	2003
Description	Author affiliation: Inst. of High Frequency Eng., Ruhr-Univ., Bochum, Germany (Perrey, C.)
Abstract	For the assessment of coronary stenoses severity, intracoronary pressure and blood flow velocity were measured simultaneously during catheterization procedures. In 10 patients pressure measurements were performed distal and proximal of the stenoses. Simultaneously, the coronary blood flow velocity was recorded using Doppler ultrasound catheters. Data was recorded at resting conditions and at hyperemia. All signals were digitized at 200 Hz. Mean pressure gradients were plotted versus flow velocity, and linear regression was applied to the data. The slopes of the resulting lines were used as an indicator for stenosis severity. In addition, a new parameter for the degree of obstruction was derived by frequency analysis of proximal and distal pressure waveforms. For verification, the described methods were compared to clinically established methods.
Sponsorship	European Soc. of Cardiology Nat. Inst. of Health, USA
Starting Page	247
Ending Page	250
File Size	271901
Page Count	4
File Format	PDF
ISBN	078038170X
ISSN	02766547
DOI	10.1109/CIC.2003.1291137
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-09-21
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Blood flow Pressure measurement Fluid flow measurement Velocity measurement Ultrasonic variables measurement Catheterization Performance evaluation Ultrasonic imaging Catheters Linear regression
Content Type	Text
Resource Type	Article

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