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NASA NTRS · 20050000850

Aging and the complexity of cardiovascular dynamics

Kaplan, D. T.·Furman, M. I.·Pincus, S. M.·Ryan, S. M.·Lipsitz, L. A.·Goldberger, A. L.
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Abstract

Biomedical signals often vary in a complex and irregular manner. Analysis of variability in such signals generally does not address directly their complexity, and so may miss potentially useful information. We analyze the complexity of heart rate and beat-to-beat blood pressure using two methods motivated by nonlinear dynamics (chaos theory). A comparison of a group of healthy elderly subjects with healthy young adults indicates that the complexity of cardiovascular dynamics is reduced with aging. This suggests that complexity of variability may be a useful physiological marker.

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Non-NASA CenterNASA Discipline CardiopulmonaryHeart RateCardiovascular PhysiologyBlood PressureAging/physiologySupport, U.S. Gov't, Non-P.H.SAdultSupport, Non-U.S. Gov'tHumanMathematicsModels, CardiovascularAgedSupport, U.S. Gov't, P.H.SCardiovascular System/growth & developmentReference Values

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Kaplan, D. T., Furman, M. I., Pincus, S. M., Ryan, S. M., Lipsitz, L. A., Goldberger, A. L.. 1991-04-01. Aging and the complexity of cardiovascular dynamics. https://ntrs.nasa.gov/citations/20050000850

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