Virtual instrumentation for clinical assessment of cardiovascular and autonomic function

作     者：Benitez, DS Zaidi, A Fitchet, A Gaydecki, PA Fitzpatrick, AP 

作者机构：Univ Manchester Inst Sci & Technol Dept Instrumentat & Analyt Sci Manchester M60 1QD Lancs England Manchester Royal Infirm Manchester Heart Ctr Manchester M13 9WL Lancs England 

出 版 物：《IEE PROCEEDINGS-SCIENCE MEASUREMENT AND TECHNOLOGY》 (IEE Proc Sci Meas Technol)

年 卷 期：2000年第147卷第6期

页      面：397-402页

核心收录：

主　　题：Bioelectric signals electrocardiography data acquisition board Digital signal processing Biology and medical computing biomedical equipment patients suffering vasovagal blackouts cardiovascular function LabVIEW forearm blood flow measurements Patient diagnostic methods and instrumentation Signal processing and detection circulation Electrical activity in neurophysiological processes computer program Computerised instrumentation Electrodiagnostics and other electrical measurement techniques autonomic function autonomic nervous system activity medical signal processing Biomedical measurement and imaging heart Pressure and vacuum measurement virtual instrumentation ECG microcomputer applications Haemodynamics, pneumodynamics baroreflex sensitivity assessment key physiological signals analysis clinical assessment blood pressure measurement physiological processes biomedical virtual instrumentation 

摘      要：Information about the activity of the autonomic nervous system can be derived by analysis of keg. physiological signals, including ECG and blood pressure, on a beat-to-beat basis. Due to the large amount of data and mathematical processing involved, analysis by hand is prohibitive. The solution developed facilitates this procedure by performing the processing on a PC-based instrument incorporating existing medical equipment, a data acquisition board and a computer program to acquire and process the physiological signals. The automated virtual instrument was written using LabVIEW(C) as the main platform. The techniques implemented include impedance cardiography. time- and frequency-domain analysis, invasive and non-invasive baroreflex sensitivity assessment, and forearm blood flow measurements. The system was designed to study patients suffering vasovagal blackouts. where the changes that occur in the heart and circulation during an attack could increase understanding of the physiological processes that underlie their blackouts.