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What is postural hypotension?

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Postural hypotension is considered a failure of the cardiovascular system or nervous system to react appropriately to sudden changes. Normally, when you stand up, some blood pools in your lower extremities. Uncorrected, this would cause your blood pressure to fall, but your body normally compensates by sending messages to your heart to beat faster and to your blood vessels to constrict. This offsets the drop in blood pressure. If this does not happen, or happens too slowly, postural hypotension results and can lead to fainting.

SOURCES:

American Heart Association: "Low Blood Pressure."

Ferri, F. Mosby, 2012. Ferri's Clinical Advisor 2012

FDA: "Midodrine Update: February 8, 2012."

Thaisetthawatkul P. 2004. Neurology

National Heart Lung and Blood Institute: "What Is Hypotension?"

Libby, P and Bonow, R. , Saunders, 2007. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine

Reviewed by Suzanne R. Steinbaum on February 20, 2017

SOURCES:

American Heart Association: "Low Blood Pressure."

Ferri, F. Mosby, 2012. Ferri's Clinical Advisor 2012

FDA: "Midodrine Update: February 8, 2012."

Thaisetthawatkul P. 2004. Neurology

National Heart Lung and Blood Institute: "What Is Hypotension?"

Libby, P and Bonow, R. , Saunders, 2007. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine

Reviewed by Suzanne R. Steinbaum on February 20, 2017

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