CAOHC Exam Questions with Correct Answers

CAOHC Exam Questions with Correct Answers What is the mission of CAOHC? - answer-promote best practices in hearing conservation worldwide and promote HL prevention thru training, guidance and support What are the professional disciplines represented on CAOHC? - answerOHC's, CD's, PS's Who are the people that work w OHC? - answer-occupational health nurse, audiologist, noise control engineer, physician, safety and health specialist, company management What are the elements of an effective hearing conservation program? - answer-noise monitoring, noise control, employee training, audiometric testing, hearing protection and recordkeeping What does the outer ear do? - answercollects/ funnels sound What does the middle ear do? - answerConvert sound waves to mechanical energy What does the outer ear do? - answerConverts mechanical energy to electrical energy What are 2 causes of conductive HL? - answer-otosclerosis (stapes cannot move), eustachian tube dysfunction What are three causes of sensorineural HL? - answer-presbycusis, noise exposure, chemicals What frequencies are affected by noise exposure? - answerHigh Whats the configuration of NIHL? - answernoise notch at 4K What does the eustachian tube do? - answerEqualizes pressure in the middle ear Hz is - answerfrequency / pitch dB is - answeramplitude/ loudness/ intensity why is noise measured w an A weighted filter at work - answerit imitates how the human ear responds to sound What is TWA? - answertime weighted average- the noise exposure averaged over an 8 hr period