Abstract：
:Right ventricle ejection fraction (RVEF) is clinically used to evaluate right ventricular function. The thermodilution method can be modified to estimate the RVEF. However, this method requires a thermistor with a fast time response in order to yield correct estimates. Digital signal processing techniques that were developed in previous works, allow the use of industry-standard slow time response thermistors for the measurement EF. However, these algorithms were not automated, and the works did not present a complete evaluation of the method's performance. This article presents a modified automated version of these algorithms, and uses numerical and in vitro simulations to test their performance. In the simulations, the measured ejection fraction was compared to the true ejection fraction. RVEFs ranging from 0.20 to 0.80 were tested for heart rates ranging from 30 to 120 heart beats per min. Statistical analysis of data showed that the new method presents an improved performance.
journal_name
Med Eng Physjournal_title
Medical engineering & physicsauthors
dos Santos I,Ferreira da Rocha A,Assis de O Nascimento F,Souza Neto J,Valvano JWdoi
10.1016/s1350-4533(02)00026-7subject
Has Abstractpub_date
2002-06-01 00:00:00pages
325-35issue
5eissn
1350-4533issn
1873-4030pii
S1350453302000267journal_volume
24pub_type
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