Group 1 pulmonary arterial hypertension (PAH) that occurs without a known cause often is called primary PAH or idiopathic (id-ee-o-PATH-ick) PAH.
Group 1 PAH that occurs with a known cause often is called associated PAH. For example, PAH that occurs in a person who has scleroderma might be called "PAH occurring in association with scleroderma," or simply "scleroderma-associated PAH."
Groups 2–5 pulmonary hypertension (PH) sometimes are called secondary PH.
Clinical trials are research studies that explore whether a medical strategy, treatment, or device is safe and effective for humans. To find clinical trials that are currently underway for Pulmonary Hypertension, visit www.clinicaltrials.gov.
December 9, 2013
Gary H. Gibbons
Epidemiologist Immerses Himself in Big Data as He Studies the Link Between HIV and Cardiovascular Disease
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