Dimensional analysis of HRV in hypertrophic cardiomyopathy patients
Tóm tắt
The HRV signals of 16 HCM patients are analyzed. Eight of them died or had a history of aborted sudden cardiac death, forming the high-risk group. The other eight patients form the low-risk group. Stationarity analysis is applied in order to avoid nonstationarities and to reject those data from further analysis. The surrogate data method is used to test nonlinear determinism on the RR series. Correlation dimension is calculated for all of the signals. An exponential fit to obtain the D/sub c/ is introduced, and a new index, D/sub c/k, derived from the proposed methodology is presented. This new phenomenological index will have the ability to stratify HCM patients with low and high risk of sudden cardiac death.
Từ khóa
#Heart rate variability #Cardiology #Risk analysis #Muscles #Electrocardiography #Signal analysis #Time domain analysis #Data analysis #Rhythm #Biomedical engineeringTài liệu tham khảo
10.1103/PhysRevA.34.2427
kruel, 1991, SCOUNT A program to calculate the correlation and information dimension from attractors by the method of sphere-counting
10.1016/0167-2789(93)90103-8
10.1016/0167-2789(83)90298-1
morémore, 1998, the levenberg-marquardt algorithm: implementation and theory, Lecture Notes in Math, 105
10.1016/0920-5632(87)90029-6
10.1103/PhysRevE.55.287
carvajal, 1997, correlation dimension of hrv to stratify hcm-patients, Elektofizjologia i Stymulacja Serca, 4, 7
10.1109/CIC.1998.731818
10.1016/0167-2789(85)90004-1
10.1038/330749a0
10.1109/5.4458
10.1038/scientificamerican0290-42
10.1016/S0006-3495(91)82309-8
10.1109/CIC.1995.482783
zebrowski, 1996, nonlinear analysis of heart dynamics, Med Biol Eng Comput, 34, 379
zebrowski, 1997, nonlinear analysis, theory, methods and applications, Proc 2nd World Congr Nonlinear Analysis, 30, 1007
zebrowski, 1999, measuring the complexity of non-stationary times series—nonlinear interpretations of selected physiological processes, Acta Phys Pol, b30, 2547
bendat, 1986, Measurement and Analysis of Random Data
baranowki, 1999, analysis of qtc in 24-hour ecg, Folia Cardiologica, 6, 338
clariáclaria, 2000, time-frequency representation of the hrv: a tool to characterize sudden cardiac death in hypertrophy cardiomyopathy patients, Proc 22nd Annu Int Conf IEEE Engineering in Medicine and Biology Society, 10.1109/IEMBS.2000.900671
10.1136/hrt.72.6_Suppl.S13
1996, heart rate variability —standards of measurement, physiological interpretation and clinical use, Circulation, 93, 1043, 10.1161/01.CIR.93.5.1043
10.1007/BFb0091924
10.1006/cbmr.2000.1553
10.1016/0008-6363(96)00008-9
10.1016/0020-7101(87)90014-6
richardson, 1996, report of the 1995 who/isfc task force on the definition and classification of cardiomyopathies, Circulation, 93, 841, 10.1161/01.CIR.93.5.841
10.1109/51.620497
hypertrophic cardiomyopathy association, 1999
10.1161/01.CIR.93.12.2142
10.1007/BF02344875
10.1016/S0002-9149(96)00193-2
kantz, 1997, Nonlinear Time Series Analysis
10.1142/S0218127493000398
10.1006/cbmr.1994.1006
10.1016/0167-2789(92)90102-S