NDLI: 3-dimensional Poincare plots of the QT intervals-an approach to nonlinear QT analysis

Content Provider	IEEE Xplore Digital Library
Author	Baranowski, R. Zebrowski, J.J. Poplawska, W. Mananas, M.A. Jane, R. Caminal, P. Chojnowska, L. Rydlewska-Sadowska, W. Vinolas, X. Guindo, J. Bayes de Luna, A.
Copyright Year	1995
Description	Author affiliation: Nat. Inst. of Cardiology, Poland (Baranowski, R.)
Abstract	The Poincare plots-a simple graphical, nonlinear method was implemented to express 24-h QT interval changes. The group of 23 pts with hypertrophic cardiomyopathy was analyzed (11 pts. with higher and 12 with lower risk of sudden cardiac death). The control group consisted of 10 healthy subjects. 24-h Holter ECG recordings were analyzed and RR and QT intervals were measured beat by beat. 3 dimensional QT and RR plots were constructed in the time delay coordinates. Three main forms of QT plots were observed, highly different in cases with hypertrophic cardiomyopathy compared to normals. Different shapes of QT and RR plots revealed a complex nonlinear relation of the QT and RR intervals.
Starting Page	789
Ending Page	792
File Size	332912
Page Count	4
File Format	PDF
ISBN	0780330536
DOI	10.1109/CIC.1995.482783
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-09-10
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heart rate interval Cardiology Electrocardiography Heart rate variability Cybernetics Hospitals Risk analysis Coordinate measuring machines Time measurement Delay effects
Content Type	Text
Resource Type	Article

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