Diminished heart beat non-stationarities in congestive heart failure

dc.bibliographicCitation.journalTitleFrontiers in Physiologyeng
dc.bibliographicCitation.volume4
dc.contributor.authorCamargo, Sabrina
dc.contributor.authorRiedl, Maik
dc.contributor.authorAnteneodo, Celia
dc.contributor.authorKurths, Jürgen
dc.contributor.authorWessel, Niels
dc.date.accessioned2018-11-10T02:04:22Z
dc.date.available2019-06-28T12:38:21Z
dc.date.issued2013
dc.description.abstractStudies on heart rate variability (HRV) have become popular and the possibility of diagnosis based on non-invasive techniques compels us to overcome the difficulties originated on the environmental changes that can affect the signal. We perform a non-parametric segmentation which consists of locating the points where the signal can be split into stationary segments. By finding stationary segments we are able to analyze the size of these segments and evaluate how the signal changes from one segment to another, looking at the statistical moments given in each patch, for example, mean and variance. We analyze HRV data for 15 patients with congestive heart failure (CHF; 11 males, 4 females, age 56±11 years), 18 elderly healthy subjects (EH; 11 males, 7 females, age 50±7 years), and 15 young healthy subjects (YH; 11 females, 4 males, age 31±6 years). Our results confirm higher variance for YH, and EH, while CHF displays diminished variance with p-values <0.01, when compared to the healthy groups, presenting higher HRV in healthy subjects. Moreover, it is possible to distinguish between YH and EH with p < 0.05 through the segmentation outcomes. We found high correlations between the results of segmentation and standard measures of HRV analysis and a connection to results of detrended fluctuation analysis (DFA). The segmentation applied to HRV studies detects aging and pathological conditions effects on the non-stationary behavior of the analyzed groups, promising to contribute in complexity analysis and providing risk stratification measures.eng
dc.description.versionpublishedVersioneng
dc.formatapplication/pdf
dc.identifier.urihttps://doi.org/10.34657/1475
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/3991
dc.language.isoengeng
dc.publisherLausanne : Frontiers Mediaeng
dc.relation.doihttps://doi.org/10.3389/fphys.2013.00107
dc.rights.licenseCC BY 3.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/eng
dc.subject.ddc530eng
dc.subject.otherHeart rate variabilityeng
dc.subject.othernon-stationarityeng
dc.subject.othersegmentationeng
dc.titleDiminished heart beat non-stationarities in congestive heart failureeng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccesseng
wgl.contributorPIKeng
wgl.subjectPhysikeng
wgl.typeZeitschriftenartikeleng
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