EXPERIMENTAL ELECTROPHYSIOLOGICAL DEVICE FOR THE APPRECIATION OF THE CARDIAC SYSTOLIC FUNCTION - A PILOT STUDY.

In this paper we propose the design and implementation of an electrophysiological experimental device capable of acquiring in real time three cardiovascular parameters: an electrocardiographic derivation (DII), the phonocardiogram and the peripheral photoplestismogram pulse wave at the level of a finger from the upper limb. These parameters allow us to measure systolic parameters with the help of appropriate software and mathematical relationships to calculate the Blumberger hemodynamic index and ejection fraction of the left ventricle. The method is completely noninvasive, simple to perform than the classic polyphysiogram that involved recording the carotid sphygmogram and allows the assessment of the systolic function of the left ventricle in the family doctor's office or of general medicine that does not have the equipment and skills necessary to perform the echocardiographic examination. The preliminary results show a good correlation between the ejection fraction measured echocardiographically (72%) and the value determined with the presented device (77%), which recommends testing the device on significant batches of patients with various cardiovascular pathologies. [ABSTRACT FROM AUTHOR]