Initial experience with a thin single segment pressure and conductance catheter for measurement of left ventricular volume
2001 (English)In: Annual Reports of the Research Reactor Institute, Kyoto University, 2001, 103-106 p.Conference paper (Refereed)
Aims: To evaluate a thin and soft multifunctionalcatheter for the simultaneous real time monitoring of leftventricular volume and pressure with special consideration toside elTects such as interference with normal cardiacelectrophysiology.Methods and results: In four pigs, pressure and volumewere simultaneously recorded by using the thin single segmentpressure and conductance catheter. Measurements were doneunder varied cardiac conditions: at baseline, during preloadreduction and afterload Increase. Volumes were calibrated withintracardiac ultrasound measurements. During preloadreduction the pressure and volume decreased as expected. Acautious afterload increase resulted in a corresponding pressureand volume increase, the maximum of the pressure curvechanged from early to late. Both SV and EDV increased. Thevery few arrhythmias were mainly caused by surgicalinterference.Conclusion: The present study demonstrates that our thinsingle segment conductance catheter for the simultaneousmeasurement of LV volume and pressure has a performancethat warrants further development with the goal to make themethod available for human use. In particular, the catheter didnot cause any arrhythmias.
Place, publisher, year, edition, pages
2001. 103-106 p.
Left ventricular volume, Conductance catheter, segment volume
Medical Laboratory and Measurements Technologies
IdentifiersURN: urn:nbn:se:kth:diva-6518OAI: oai:DiVA.org:kth-6518DiVA: diva2:11253
23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society; Istanbul; 25 October 2001 through 28 October 2001
QC 201009222006-12-062006-12-062010-09-22Bibliographically approved