IMPLICATIONS OF THE DIELECTRICAL BEHAVIOR OF HUMAN BLOOD FOR CONTINUOUS ONLINE MEASUREMENT OF HEMATOCRIT

Authors
DEVRIES PMJM LANGENDIJK JWG KOUW PM VISSER V SCHNEIDER H
Citation
Pmjm. Devries et al., IMPLICATIONS OF THE DIELECTRICAL BEHAVIOR OF HUMAN BLOOD FOR CONTINUOUS ONLINE MEASUREMENT OF HEMATOCRIT, Medical & biological engineering & computing, 31(5), 1993, pp. 445-448
Citations number
19
Categorie Soggetti
Engineering, Biomedical","Computer Applications & Cybernetics
Journal title
Medical & biological engineering & computing → ACNP
ISSN journal
01400118
Volume
31
Issue
5
Year of publication
1993
Pages
445 - 448
Database
ISI
SICI code
0140-0118(1993)31:5<445:IOTDBO>2.0.ZU;2-J
Abstract
A study was designed to explore the possibility of detecting the haema tocrit of blood by means of admittance measurements. The admittance an d phase angle of blood kept in a measuring cell were determined at var ious frequencies between 60 kHz and 24 MHz. A reliable and accurate es timation of haematocrit was obtained in two ways. First, low-frequency admittance, high-frequency admittance and a factor x, which was the c onductive percentage of cell content, were used. Secondly, the maximum phase angle was used. Both methods can be applied to obtain continuou s on-line information about haematocrit for blood volume control durin g haemodialysis.