Increased lung arterial obstruction is significantly associated with greater airflow obstruction in people with chronic thromboembolic pulmonary hypertension (CTEPH) and without a smoking history, a study shows. Notably, airflow obstruction, reflected by a reduced ability to exhale quickly, was lessened with reduced arterial obstruction and improved blood flow following pulmonary thromboendarterectomy, or PEA — CTEPH’s mainstay treatment, a surgery to remove blood clots from major blood vessels in the lungs. These findings suggest that blood…

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