Asthma therapies get personal

摘要

Most of us take breathing for granted. Air enters and exits the labyrinthine airways of our lungs instinctively. But for individuals suffering from asthma, breathing can be an epic battle. During a severe asthma attack, the thin tubes that shuttle oxygen and carbon dioxide constrict and fill with mucus, making inhalation nearly impossible. Patients who have experienced one of these attacks say it feels like drowning or choking.