000070889 001__ 70889
000070889 005__ 20180613135142.0
000070889 0247_ $$2doi$$a10.1007/978-981-10-5122-7_120
000070889 0248_ $$2sideral$$a101118
000070889 037__ $$aART-2017-101118
000070889 041__ $$aeng
000070889 100__ $$0(orcid)0000-0003-4130-5866$$aRamírez, J.
000070889 245__ $$aQuantification of t-wave morphological variability using time-warping methods
000070889 260__ $$c2017
000070889 5060_ $$aAccess copy available to the general public$$fUnrestricted
000070889 5203_ $$aThe aim of this study is to quantify the variation of the T-wave morphology during a 24-hour electrocardiogram (ECG) recording. Two ECG-derived markers are presented to quantify T-wave morphological variability in the temporal, dw, and amplitude, da , domains. Two additional markers, dw NL and da NL , that only capture the non-linear component of dw and da are also proposed. The proposed markers are used to quantify T-wave time and amplitude variations in 500 24-hour ECG recordings from chronic heart failure patients. Additionally, two mean warped T-waves, used in the calculation of those markers, are proposed to compensate for the rate dependence of the T-wave morphology. Statistical analysis is used to evaluate the correlation between dw, dw NL , da and da NL and the maximum intra-subject RR range, ¿RR. Results show that the mean warped T-wave is able to compensate for the morphological differences due to RR dynamics. Moreover, the metrics dw and dw NL are correlated with ¿RR, but da and da NL are not. The proposed dw and dw NL quantify variations in the temporal domain of the T-wave that are correlated with the RR range and, thus, could possibly reflect the variations of dispersion of repolarization due to changes in heart rate.
000070889 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/DPI2016-75458-R$$9info:eu-repo/grantAgreement/ES/MINECO/TIN2013-41998-R
000070889 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000070889 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000070889 700__ $$aOrini, M.
000070889 700__ $$0(orcid)0000-0002-1960-407X$$aPueyo, E.$$uUniversidad de Zaragoza
000070889 700__ $$0(orcid)0000-0003-3434-9254$$aLaguna, P.$$uUniversidad de Zaragoza
000070889 7102_ $$15008$$2800$$aUniversidad de Zaragoza$$bDepartamento de Ingeniería Electrónica y Comunicaciones$$cTeoría de la Señal y Comunicaciones
000070889 773__ $$g65 (2017), 478-481$$pIFMBE proc.$$tIFMBE proceedings$$x1680-0737
000070889 8564_ $$s318331$$uhttp://zaguan.unizar.es/record/70889/files/texto_completo.pdf$$yPostprint
000070889 8564_ $$s112436$$uhttp://zaguan.unizar.es/record/70889/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000070889 909CO $$ooai:zaguan.unizar.es:70889$$particulos$$pdriver
000070889 951__ $$a2018-06-13-12:29:21
000070889 980__ $$aARTICLE