Key result
Hypertension attenuated the autonomic neural response to passive head-up tilt regardless of age, whereas in normotensive subjects, the autonomic response declined logarithmically with age.
Why the study?
Do age and hypertension affect autonomic nervous regulation during passive head-up tilt in subjects without cardiac disease?
Population
62 subjects without cardiac disease, diabetes mellitus, or neurological disorders, comprising 31…
Comparison
Passive 60 degrees head-up tilting position… vs Normotensive subjects and supine position
Design
Cross-sectional
Authors
Loading...
Hypertension may blunt autonomic postural responses independently of age; leaves open longitudinal links to orthostatic risk or targeted interventions.
Cross-Sectional (n=62)
Do age and hypertension affect autonomic nervous regulation during passive head-up tilt in subjects without cardiac disease?
Autonomic neural response to postural tilt decreases with age in normotensive individuals, but hypertension attenuates this response independently of age.
Yo et al. (1994) conducted a cross-sectional in Hypertension (n=62). Hypertension vs. Normotensive subjects was evaluated on Autonomic neural response to passive head-up tilt (L/H ratio and %HF). Hypertension attenuated the autonomic neural response to passive head-up tilt regardless of age, whereas in normotensive subjects, the autonomic response declined logarithmically with age.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: