How much does blood pressure typically drop during the night?

Updated: Feb 22, 2019
  • Author: Matthew R Alexander, MD, PhD; Chief Editor: Eric H Yang, MD  more...
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Answer

There is usually a 10-20% BP drop during the night. People who do not demonstrate such a decrease in BP are at increased risk for cardiovascular events. Patients with 24-hour BP greater than 135/85 mm Hg have been shown to have almost double the likelihood of having a cardiovascular event. [5]


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