NDLI: A Bedside System for Combined RNA and PAC in Heart Failure

Content Provider	IEEE Xplore Digital Library
Author	Sun, L. Lacy, J.L. Htay, T. Mehta, D. Aqel, R. Heo, J. Iskandrian, A.
Copyright Year	2005
Description	Author affiliation: Proportional Technol. Inc., Houston, TX (Sun, L.; Lacy, J.L.)
Abstract	Assessment of right ventricular (RV) function is inherently more difficult than left ventricular (LV) function because of the unusual geometry. We have developed a bedside system that integrates a multiwire gamma camera (MWGC) with pulmonary artery catheterization (PAC). This system permits simultaneous acquisition of first pass radionuclide angiography (RNA) images and pressure data from the catheter as well as acquisition of thermodilution data. The system provides highly accurate quantitative measurement of RV and LV ejection fractions, which are indicators of systolic function. This combined RNA-PAC technique permits simple and accurate calculation of both right and left ventricular volume of the ventricular cavity by dividing stroke volume by ejection fraction. Because these data are based on measurements that are non-geometric, this technique for volume measurement is extremely accurate and far surpasses any of the currently available modalities. The system is capable of generating curves relating RV volumes and pressures, which are critical in evaluation of heart failure (HF) patients. Clinical studies were successfully performed on 25 patients, and the results were of high quality and were reproducible. In summary, the system for the first time provides a novel method of generation of RV pressure-volume loops, using a hybrid method of right heart catheterization and RNA
Starting Page	4111
Ending Page	4114
File Size	1289104
Page Count	4
File Format	PDF
ISBN	0780387414
DOI	10.1109/IEMBS.2005.1615367
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-01-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	RNA Heart Catheterization Volume measurement Geometry Cameras Arteries Angiography Catheters Current measurement pressure-volume loop Radionuclide angiography cardiac catheterization
Content Type	Text
Resource Type	Article

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