for travel outside the united states canada puerto rico and the u s virgin islands the change fee for delta marketed flights is typically $ 200 to $ 500 but can vary based on location and type of farechanges are usually permitted only to the return portion of an international itineraryased on the fare rules you may have to pay a service fee and or a difference in fare for travel within the 50 united states canada puerto rico and the u s virgin islands the fee is $ 200 for delta marketed flights
bronÂ·chiÂ·ecÂ·taÂ·sis. Chronic dilation of bronchi or bronchioles as a sequel of inflammatory disease or obstruction often associated with heavy sputum production. Synonym(s): bronchiectasia. [bronchi- + G. ektasis, a stretching]. /bronÂ·chiÂ·ecÂ·taÂ·sis/ (brongâ³ke-ekÂ´tah-sis) chronic dilatation of one or more bronchi.
Asthma affects the body by limiting the flow of air into the lungs. When certain substances trigger an asthma attack, cholinergic receptors in the airways respond by tightening the muscles.This process is called bronchoconstriction.It triggers a sequence of reactions in the body, which contributes to increased inflammation and mucus secretions.An asthma attack -- or an asthma exacerbation -- can be very frightening. You may cough, have difficulty breathing, or feel a shortness of breath.his process is called bronchoconstriction. It triggers a sequence of reactions in the body, which contributes to increased inflammation and mucus secretions. An asthma attack -- or an asthma exacerbation -- can be very frightening. You may cough, have difficulty breathing, or feel a shortness of breath.