Harvard Heart Letter

When high blood pressure affects the arteries to the lungs

New drugs help expand treatment options for pulmonary hypertension.

The common, garden-variety type of high blood pressure (what doctors call hypertension) affects vessels throughout the body. But a less common form affects the arteries that carry blood from the right side of the heart to the lungs. The vessels tighten, become stiff and thick, or develop blood clots.

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