Why the study?
Do CSF and plasma levels of MHPG differ between patients with orthostatic hypotension (MSA or IOH) and normal controls?
Population
Patients with orthostatic hypotension and normal controls
Comparison
Measurement of CSF and plasma levels of… vs Normal controls
Design
Cross-sectional
Authors
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May differentiate MSA from IOH pathophysiology; leaves open prospective validation before diagnostic use.
Do CSF and plasma levels of MHPG differ between patients with orthostatic hypotension (MSA or IOH) and normal controls?
CSF and plasma MHPG levels can help differentiate the underlying pathophysiology of orthostatic hypotension in multiple system atrophy versus idiopathic orthostatic hypotension.
Dreifuss et al. (1961) studied this question.