NDLI: Initial experience with a thin single segment pressure and conductance catheter for measurement of left ventricular volume

Content Provider	IEEE Xplore Digital Library
Author	Carlsson, C. Soderqvist, E. Brodin, L.-A. Kallner, G. Hultman, J. Elmqvist, H. Saha, S.
Copyright Year	2001
Description	Author affiliation: Dept. of Med. Eng., Karolinska Institutet, Huddinge, Sweden (Carlsson, C.; Soderqvist, E.)
Abstract	A thin and soft multifunctional catheter was evaluated for the simultaneous real time monitoring of left ventricular volume and pressure with special consideration to side effects such as interference with normal cardiac electrophysiology. In four pigs, pressure and volume were simultaneously recorded by using the thin single segment pressure and conductance catheter. Measurements were done under varied cardiac conditions: at baseline, during preload reduction and afterload increase. Volumes were calibrated with intracardiac ultrasound measurements. During preload reduction the pressure and volume decreased as expected. A cautious afterload increase resulted in a corresponding pressure and volume increase, the maximum of the pressure curve changed from early to late. Both SV and EDV increased. The very few arrhythmias were mainly caused by surgical interference. The present study demonstrates that our thin single segment conductance catheter for the simultaneous measurement of LV volume and pressure has a performance that warrants further development with the goal of making the method available for human use. In particular, the catheter did not cause any arrhythmias.
Starting Page	103
Ending Page	106
File Size	276925
Page Count	4
File Format	PDF
ISBN	0780372115
ISSN	1094687X
DOI	10.1109/IEMBS.2001.1018858
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-10-25
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Catheters Pressure measurement Volume measurement Biomedical electrodes Hospitals Cardiology Surgery Interference Ultrasonic variables measurement Conductivity
Content Type	Text
Resource Type	Article

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