Breathe Easy

摘要

The smooth muscle that tines the tung's airways, tike the appendix, serves no function. When it contracts, it can pinch off airflow and cause asthma attacks. Unlike the appendix, smooth muscle can't be removed. But doctors can now relax it permanently, and offer relief to two million Americans for whom no medication can stop frequent asthma attacks. The Alair Bronchial Thermoptasty System consists of an electrode catheter connected to a controller unit.