Comparison
Tilt table test with spontaneous and controlled… vs Supine position, spontaneous breathing, no…
Design
Other
Authors
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No immediate clinical implications for autonomic assessment; leaves open non-autonomic contributions to respiratory HPV during orthostasis.
A novel multivariate time-frequency method reveals that non-autonomic, possibly mechanically mediated mechanisms contribute to respiratory oscillations in heart period variability during orthostatic stress.
Orini et al. (2012) studied this question.
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