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Wave reflection, assessed by use of the ARCSolver Algorithm for pulse wave separation, is reduced under acute µg conditions in parabolic flight

Hametner, B. and Heusser, K. and Moestl, S. and Gauger, Peter and Limper, Ulrich and Wassertheurer, S. and Tank, J. (2016) Wave reflection, assessed by use of the ARCSolver Algorithm for pulse wave separation, is reduced under acute µg conditions in parabolic flight. 37th Annual International Gravitational Physiology Meeting and the 14th European Life Sciences Symposium, 5-10 June 2016, Toulouse, France.

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Abstract

Weightlessness during long-term space flight over 6-12 months leads to complex individual cardiovascular adaptation. The initial central blood volume expansion followed by a loss of plasma volume is accompanied by changes in vascular mechanoreceptor loads and responsive-ness, altered autonomic reflex control of heart rate and blood pressure, and hormonal changes in the long run. Hence, function and structure of the heart and blood vessels may change. Hemodynamic data obtained during short- and long-term space flight may indicate that the adaptation process resembles ageing of the cardiovascular system characterized by decreased diastolic blood pressure, increased central sympathetic nerve traffic and increased arterial pulse wave velocity. Experiments during parabolic flights in supine position suggest, that stroke volume does not change during transitions between µ-g and 1-g. We tested a novel method of pulse wave separation based on simple oscillometric brachial cuff waveform reading to investigate pulse wave reflection during acute weightlessness in healthy subjects. We hypothesized that the wave reflection magnitude (RM) remains unaltered during parabolic flights in supine position.

Item URL in elib:https://elib.dlr.de/118743/
Document Type:Conference or Workshop Item (Poster)
Title:Wave reflection, assessed by use of the ARCSolver Algorithm for pulse wave separation, is reduced under acute µg conditions in parabolic flight
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hametner, B.UNSPECIFIEDUNSPECIFIED
Heusser, K.UNSPECIFIEDUNSPECIFIED
Moestl, S.UNSPECIFIEDUNSPECIFIED
Gauger, PeterPeter.Gauger (at) dlr.deUNSPECIFIED
Limper, UlrichUlrich.Limper (at) dlr.dehttps://orcid.org/0000-0001-9927-4180
Wassertheurer, S.UNSPECIFIEDUNSPECIFIED
Tank, J.German Aerospace Center, Institute of Aerospace Medicinehttps://orcid.org/0000-0002-5672-1187
Date:2016
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Wave reflection; parabolic flight; micro gravity;
Event Title:37th Annual International Gravitational Physiology Meeting and the 14th European Life Sciences Symposium
Event Location:Toulouse, France
Event Type:international Conference
Event Dates:5-10 June 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Systemphysiologie
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Cardiovascular Medicine in Aerospace
Institute of Aerospace Medicine > Muscle and Bone Metabolism
Deposited By: Polak, Agnieszka
Deposited On:14 Mar 2018 10:56
Last Modified:31 Jul 2019 20:16

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