3. myringotomy is indicated when there is bulging of the drumhead and pain not quickly relived by antibiotics Myringotomy is usually performed to drain pus from the ear in patients with ASOM or to release serum from the middle ear in patients with secretory media 3.myringotomy is indicated when there is bulging of the drumhead and pain not quickly relived by antibiotics. Myringotomy is usually performed to drain pus from the ear in patients with ASOM or to release serum from the middle ear in patients with secretory media