Variables in objective audiometry.

Objective audiometry has a definite application in evaluating problem patients. Three basic tests, electrodermal response audiometry (EDR), evoked cortical response audiometry (ERA), and impedance audiometry, are used to evaluate pediatric and adult patients. Each measurement technic, however, has limitations of which the physician should be aware. Impedance audiometry has the greatest potential as an objective measurement of auditory function.

Practical approach to pediatric hearing problems.

The identification and measurement of suspected hearing loss in pediatric patients presents a formidable challenge to the physician. Since he is responsible not only for determining the nature and extent of the hearing deficit, but also for overall management throughout the patient's learning life, an early and accurate diagnosis of the loss is mandatory.