The Osler's sign of pseudohypertension is an artificially and falsely elevated blood pressure reading obtained through sphygmomanometry due to arteriosclerotic, calcified blood vessels which do not physiologically compress with pressure.
Because they do not compress with pressure normally, the blood pressure reading is higher than it truly ought to be.
It can indicate pseudohypertension. It is also known as "Osler's maneuver".
The sign is named for William Osler.
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