ما هو التهاب الشعب الهوائية المزمن؟
![What Is Chronic Bronchitis? 1 Chronic Bronchitis](https://adoctor.org/wp-content/uploads/adoctor-conditions-217-300x158.png)
**What is Chronic Bronchitis?** **Definition:** Chronic bronchitis, also known as **chronic obstructive bronchitis (COB)**, is a long-term inflammatory condition that affects the bronchi, the large airways that carry air in...