Models of stress such as hypoglycemia have identified that stress results the next day in decreased baroreflex sensitivity. This project will test the hypothesis that these delayed changes in autonomic nervous system function are secondary to a rise in ACTH. The investigators will infuse cosyntropin versus placebo in a double-blind, crossover study in healthy adults and measure the delayed effects on the autonomic system as measured by cardiovagal baroreflex sensitivity.
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Cardiovagal Baroreflex Sensitivity (Modified Oxford Technique)
Timeframe: Baseline, 4-hours after infusion, 24-hours after infusion