Which procedure is essential before fitting a hearing aid?

The correct procedure before fitting a hearing aid is otoscopy. Otoscopy involves the examination of the ear canal and tympanic membrane (eardrum) using an otoscope, allowing the hearing aid specialist to identify any physical issues such as earwax buildup, infection, or structural abnormalities that could impact hearing or the fitting of the hearing aid. This step is crucial because it ensures that the ear is free of obstructions and healthy enough to accommodate a hearing aid, which is vital for the effectiveness and comfort of the device.

While audiometric testing is also important, as it assesses the degree and type of hearing loss, it is typically conducted after otoscopy to confirm that the ear is in suitable condition for testing. Tympanometry provides information about the middle ear function but does not address external factors in the ear canal. The patient interview is essential for understanding the individual's hearing needs and lifestyle, but it is not a physical examination of the ear itself. Therefore, otoscopy is the foundational step that must occur prior to other assessments or fittings.