Is the morning surge in blood pressure associated with reactivity of the sympathetic nervous system?
Sympathetic nervous system reactivity, specifically MSNA burst amplitude during arousal, is associated with the morning surge in blood pressure.
These results suggest that the central nervous system mechanisms influencing the increase in MSNA burst amplitude during arousal may also be fundamental in determining the rate and power of BP rise during the morning period.
Lambert et al. (Thu,) studied this question.
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