What is the correct action to take if there is a 15 dB deviation in acoustic calibration?

When there is a 15 dB deviation in acoustic calibration, the appropriate course of action is to perform exhaustive calibration. This ensures that all aspects of the audiometric equipment are checked and adjusted to meet the necessary standards. A 15 dB deviation indicates a significant discrepancy that could affect test results, and exhaustive calibration involves a thorough evaluation of equipment performance across all frequencies and intensities. This step is crucial in maintaining the reliability and accuracy of hearing tests conducted with the equipment, ensuring that patients receive proper assessments and care.

Other measures, like recalibrating immediately, may not be sufficient without a comprehensive check of the entire system, while daily checks and ambient noise measurements serve important roles in ongoing quality control but do not address the fundamental calibration issue indicated by a 15 dB deviation.