NDLI: Time-variant heart-rate variability spectral parameters during dobutamine test

Content Provider	IEEE Xplore Digital Library
Author	Mainardi, L.T. Petrucci, E. Balian, V. Bianchi, A.M. Porta, A. Canziani, R. Cerutti, S.
Copyright Year	1998
Description	Author affiliation: Dept. of Biomed. Eng., Politecnico di Milano, Italy (Mainardi, L.T.)
Abstract	Time-variant spectral parameters are used to monitor the Autonomic Nervous System (ANS) status in normal and coronary artery disease (CAD) patients during pharmacological infusion of Dobutamine in Dobutamine Echocardiography Test (DET). During the test, the spectral parameters (LF and HF power, LF/HF ratio) are estimated on a beat-to-beat basis through the time-variant identification of an AutoRegressive (AR) model, using a Recursive Least Square (RLS) algorithm. Different LF responses have been found in the early stages of drug infusion (10-20 /spl gamma/) sequentially before the appearance of echo, ECG or clinical signs of ischemia. An early increase of LF/LF/sub basal/ value was found in 6 of 8 (75%) positive tests, and only in 2 of 9 (22%) negative ones, suggesting that the different neurovegetative response in the sub-maximal stages of drug infusion may be a marker of an actual or successive ischemia.
Starting Page	105
Ending Page	108
File Size	377957
Page Count	4
File Format	PDF
ISBN	0780352009
ISSN	02766547
DOI	10.1109/CIC.1998.731738
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-09-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heart rate variability Coronary arteriosclerosis Testing Hafnium Drugs Ischemic pain Patient monitoring Condition monitoring Autonomic nervous system Echocardiography
Content Type	Text
Resource Type	Article

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