PETs have several benefits to the patient.
After PET placement hearing and pressure is often immediately restored or improved.
The aeration of the middle ear reduces the likelihood of recurrent otitis media (i.e. a group of inflammatory diseases of the middle ear).
Infections become more reliably detected since they present simply with a draining ear. When infections do occur they are less painful and the infection may be managed with ear drops alone instead of antibiotics by mouth.