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Article

Vasoconstrictor reserve and sympathetic neural control of orthostasis.

Circulation - 2 Nov 2004

Fu Qi, Witkowski Sarah, Levine Benjamin D

Abstract excerpt

BACKGROUND: We tested the hypothesis that individual variability in orthostatic tolerance is dependent on the degree of neural and vasomotor reserve available for vasoconstriction. METHODS AND RESULTS: Muscle sympathetic nerve activity (MSNA) and hemodynamics were measured in 12 healthy young volunteers during 60 degrees head-up tilt (HUT), followed by a cold pressor test (CPT) in HUT. Orthostatic tolerance was...

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PMID: 15505093
DOI: 10.1161/01.CIR.0000146384.91715.B5

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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