Postural hypotension, also known as orthostatic weakness, is caused by changes in posture, such as sudden change from supine position to upright position, or hypotension caused by insufficient blood supply after standing for a long time. It is generally believed that postural hypotension is characterized by a decrease in systolic blood pressure of 20 mm Hg or a decrease in diastolic blood pressure of 65,438 00 mm Hg compared with supine position after standing.

It should be noted that you should stand up slowly.

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