Why the study?
Does nontraumatic subarachnoid hemorrhage increase sympathetic nervous activity compared to controls?
Population
18 patients with nontraumatic subarachnoid hemorrhage
Comparison
Nontraumatic subarachnoid hemorrhage vs 2 different control groups
Design
Cohort
Follow-up
6 months
Authors
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Sympathetic hyperactivity may underlie cardiac complications after SAH; leaves open whether sympatholysis improves outcomes.
Does nontraumatic subarachnoid hemorrhage increase sympathetic nervous activity compared to controls?
This study provides direct evidence of massive sympathetic nervous activation following subarachnoid hemorrhage, which may explain the associated cardiac complications.
Naredi et al. (2000) studied this question.