Answer
Edema is characterized by swollen tissues. Edema is caused by body's reaction to allergens. In this case the larynx of Mr. Alvarez is swollen which can cause the epiglottis to block the air flow from pharynx . Tracheostomy is a procedure by which the trachea is surgically opened. It provides an alternate route for air to flow into the lower respiratory passages.
Work Step by Step
Same as above.
