CAOHC Certification study guide Exam With Complete Solutions

CAOHC Certification study guide Exam With Complete Solutions largest industry that osha estimates exposes 5.2 million workers to average noise levels of 85db and above - answermanufacturing what does c.a.o.h.c. stand for? - answercouncil for accreditation in occupational hearing conservation what is the caohc main role? - answerto certify and train occupational hearing conservationists who is responsible for the care and maintenance of the audiometer - answerohc what is the ohc not responsible for? - answerthe diagnosis of hearing problems to maintain their certification, how often must ohcs be recertified? - answer5 years from initial certification noise-induced hearing loss ___________ be reversed by medical treatment. - answercannot what is impulse or impact noise defined as? - answersudden, loud noise from gunfire or metal stamping agents besides noise that are toxic to the ear are known as - answerototoxins agents besides noise that are toxic to the ear, especially when they are combined with noise exposure are: - answerheavy metals, organic solvents or asphyxiants tts means - answertemporary threshold shift the ohc needs to catch why type of hearing losses before they become a permanent sensorineural hearing loss - answertts (temporary threshold shifts) technical term for ringing or other noises in the ears is known as... - answertinnitus tinnitus is a warning signal of noise induced hearing loss due to : - answerhair cell damage or fatigue non-auditory effects of hearing loss: - answer-social isolation/depression -interference with communication -degraded job performance - stress -annoyance -fatigue when is the best time to perform a baseline audiogram? - answer14 hours away from noise (preferably pre-employment) when is the best time to perform an annual audiogram? - answernear the end of the work day or well into work shift what is an audiogram? - answera chart in which hearing threshold levels are plotted potential benefits to the company management of a good hearing conservation program: - answer-better labor management relations -improved employee morale -greater job satisfaction -productivity and safety -reduction in accidents -illnesses and lost time name different types of professionals to make up the hearing conservation team: (7 total) - answer1. occupational health nurse 2. occupational physician 3. audiologist y specialist 5. industrial hygienist ryngoloist 7. noise control engineer the required standard audiometric frequencies measured by ohcs are: - answer500 (.5), 1000 (1), 2000(2), 3000(3), 4000(4) and 6000(6); 8000 (8) is highly recommeneded but not required standard audiometric frequencies when beginning a hearing test: - answerstart hearing test at 1000 hz in the first ear at 40 db of loudness. for the second ear, you start the test at 500 hz. true or false: the ohc may not perform speech audiometry, maskin, bone conduction, abrs, oaes - answertrue the outermost part of the ear is called - answerpinna the pinna is responsible for - answerfunneling soundwaves into the ear canal true or false: both the ear canal and pinna transfer sound from the outer ear to middle ear at the level of the tympanic membrane - answertrue . the technical term for the eardrum is the - answertympanic membrane. this specific part of the ear is located at the beginning of the middle ear. it protects the middle ear structures. - answertympanic membrane another name for the tympanic membrane is - answerear drum the technical term for earwax is ___________________ (it can sometimes interfere with the comfort and proper use of earplugs as well as hearing test results). - answercerumen inside the middle ear are situated three small bones called - answerthe ossicles whose names are the malleus, incus and stapes the function of the ossicular chain is to - answerconduct sound into the inner ear . the inner ear of the _______________, houses the mechanism for balance as well as hearing - answerlabyrinth in the inner ear, the snail shaped end organ for hearing is the - answercochlea what is seated on the basilar membrane to convert the hydraulic energy into electrical energy? - answertiny hair cells noise-exposed people tend to - answerlose hearing first in the high tones/frequencies otologists - answermedical specialist who specializes further in ears physicians specializing in the diseases of the ear, nose and throat are called - answerotolaryngol