TY - GEN
T1 - Multifractal analysis and the NYHA index
AU - Munõz-Diosdado, A.
AU - Ramírez-Hernández, L.
AU - Aguilar-Molina, A. M.
AU - Zamora-Justo, J. A.
AU - Gutiérrez-Calleja, R. A.
AU - Virgilio-González, C. D.
N1 - Publisher Copyright:
© 2014 AIP Publishing LLC.
PY - 2014
Y1 - 2014
N2 - We did multifractal analysis of heartbeat interval time series of healthy persons and patients with congestive heart failure (CHF). To analyze circadian rhythm variations we analyzed time series of 24 hours records and segments of six hours when the subject is asleep and segments of six hours when is awake. A decrease in the multifractality degree occurs in the heartbeat interval time series of CHF patients. This multifractality loss is associated with the width reduction of the spectrum and the complexity loss of the signal. Multifractal spectra of healthy persons are right skewed, but the spectra of CHF patients tend to be symmetrical and in some cases are left skewed. To determine the therapy for CHF patients, cardiologists use an index proposed by the NYHA (New York Heart Association). There is a correlation between this index and the multifractal analysis parameters, i.e. while higher is the NYHA index the width of the multifractal spectrum is lower and it is also more symmetrical. In contrast, patients with NYHA index equal to 1 have multifractal parameters similar to those of healthy subjects.
AB - We did multifractal analysis of heartbeat interval time series of healthy persons and patients with congestive heart failure (CHF). To analyze circadian rhythm variations we analyzed time series of 24 hours records and segments of six hours when the subject is asleep and segments of six hours when is awake. A decrease in the multifractality degree occurs in the heartbeat interval time series of CHF patients. This multifractality loss is associated with the width reduction of the spectrum and the complexity loss of the signal. Multifractal spectra of healthy persons are right skewed, but the spectra of CHF patients tend to be symmetrical and in some cases are left skewed. To determine the therapy for CHF patients, cardiologists use an index proposed by the NYHA (New York Heart Association). There is a correlation between this index and the multifractal analysis parameters, i.e. while higher is the NYHA index the width of the multifractal spectrum is lower and it is also more symmetrical. In contrast, patients with NYHA index equal to 1 have multifractal parameters similar to those of healthy subjects.
UR - http://www.scopus.com/inward/record.url?scp=84911379000&partnerID=8YFLogxK
U2 - 10.1063/1.4901382
DO - 10.1063/1.4901382
M3 - Contribución a la conferencia
AN - SCOPUS:84911379000
T3 - AIP Conference Proceedings
SP - 155
EP - 158
BT - AIP Conference Proceedings
A2 - Guzman-Cabrera, Rafael
A2 - Bernal-Alvarado, Jose de Jesus
A2 - Brandan, Maria-Ester
PB - American Institute of Physics Inc.
T2 - 13th Mexican Symposium on Medical Physics
Y2 - 15 March 2014 through 16 March 2014
ER -