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What is pulmonary arterial hypertension?

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Having pulmonary arterial hypertension (PAH) means that you have high blood pressure in the arteries that go from your heart to your lungs. It's different from having regular high blood pressure. With PAH, the tiny arteries in your lungs become narrow or blocked. It's harder for blood to flow through them, and that raises the blood pressure in your lungs. Your heart has to work harder to pump blood through those arteries, and after a while the heart muscle gets weak. Eventually, it can lead to heart failure.

From: Pulmonary Arterial Hypertension WebMD Medical Reference

SOURCES:

National Heart, Lung, and Blood Institute: "What Is Pulmonary Hypertension?"

Pulmonary Hypertension Association: "Treatment."

Barst, R.J. , 2004. Journal of the American College of Cardiology

Simonneau, G. , 2004. Journal of the American College of Cardiology

Runo, J.R. , 2003. Lancet

Mereles, D. , 2006. Circulation

Galie, N. y, 2004. Journal of the American College of Cardiolog

Badesch, D.B. , 2007. Chest

Klepetko, W. , 2004. Journal of the American College of Cardiology

Sitbon, O. , 2005. Circulation

Reviewed by Suzanne R. Steinbaum on February 20, 2017

SOURCES:

National Heart, Lung, and Blood Institute: "What Is Pulmonary Hypertension?"

Pulmonary Hypertension Association: "Treatment."

Barst, R.J. , 2004. Journal of the American College of Cardiology

Simonneau, G. , 2004. Journal of the American College of Cardiology

Runo, J.R. , 2003. Lancet

Mereles, D. , 2006. Circulation

Galie, N. y, 2004. Journal of the American College of Cardiolog

Badesch, D.B. , 2007. Chest

Klepetko, W. , 2004. Journal of the American College of Cardiology

Sitbon, O. , 2005. Circulation

Reviewed by Suzanne R. Steinbaum on February 20, 2017

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What causes pulmonary arterial hypertension?

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