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- W2103451379 abstract "To evaluate alpha and beta components of adrenergic baroreflex sensitivity (BRSa) in Valsalva maneuver (VM).BRSa was studied in 89 healthy subjects aged 30±13 [16-75] years. Subjects were divided into three groups per blood pressure (BP) patterns associated with relatively balanced or increased alpha-adrenergic modulation: (1) BAR (n=43) - Balanced Autonomic Response with a BP dip below baseline in late phase II (IIL) and recovery in phase IV; (2) SAR (n=16) - Suppressed Autonomic Response with a non-dipping BP; and (3) AAR (n=30) - Augmented Autonomic Response with a BP recovery in phase IIL. Discrete (alpha and beta) BRSa formulae were produced using alpha- or beta-adrenergic phases: α-BRSa (phase IIL) and β-BRSa (phase IV), respectively. Discrete BRSa were studied to determine potential correlations to BRSa1 (validated BRSa evaluation) and evaluated for reliability.Patterns with higher α-adrenergic influence showed correlation between α-BRSa and BRSa1 (AAR: r=0.447, p<0.05; SAR: r=0.774, p<0.01). BAR showed correlation between β-BRSa and BRSa1 (r=-0.566, p<0.01), and α- and β-adrenergic coefficients (r=-0.381, p<0.05). Discrete BRSa were more reliable than BRSa1 (n=33; p<0.05).Discrete BRSa are reproducible and correlated with BRSa1.If validated, discrete BRSa may differentiate physiologic variances and vague dysautonomia." @default.
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- W2103451379 date "2016-02-01" @default.
- W2103451379 modified "2023-09-27" @default.
- W2103451379 title "Non-invasive measurement of baroreflex during Valsalva maneuver: Evaluation of alpha and beta-adrenergic components" @default.
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- W2103451379 doi "https://doi.org/10.1016/j.clinph.2015.10.047" @default.
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