Document ID: chunk:federal_register_of_legislation:F2022C00893:reg:9:p4
Version: federal_register_of_legislation:F2022C00893
Segment Type: reg
Provision Reference: reg 9 (pt 4/6)
Character Range: 13372–16250

at the tympanic membrane of at least 140 dB(C) before the clinical worsening of tinnitus;
            Note: dB(C) is defined in the Schedule 1 - Dictionary.
(41)      being exposed to a sound pressure level at the tympanic membrane of at least 85 dB(A) as an 8-hour time-weighted average (TWA) with a 3‑dB exchange rate for a cumulative period of at least six months before the clinical worsening of tinnitus;
Note: dB(A) and time-weighted average (TWA) with a 3-dB exchange rate are defined in the Schedule 1 - Dictionary.
(42)      having blunt trauma, penetrating trauma or surgery to an auditory structure or central auditory neural pathway, within the five years before the clinical worsening of tinnitus;
            Note 1: Examples of trauma include temporal bone fracture and basilar skull fracture.
            Note 2: auditory structure is defined in the Schedule 1 - Dictionary.
(43)      having sensorineural hearing loss or conductive hearing loss at the time of the clinical worsening of tinnitus;
(44)      taking a drug from the specified list of drugs within the 30 days before the clinical worsening of tinnitus;
            Note: specified list of drugs is defined in the Schedule 1 - Dictionary.
(45)      having smoked at least ten pack-years of tobacco products before the clinical worsening of tinnitus, and where smoking has ceased, the clinical worsening of tinnitus has occurred within five years of cessation;
            Note: one pack-year is defined in the Schedule 1 - Dictionary.
(46)      being exposed to second-hand smoke:
(a)          for at least 2,500 hours before the clinical worsening of tinnitus; and
(b)          where the first exposure to second-hand smoke commenced at least five years before the clinical worsening of tinnitus; and
(c)          where the last exposure to second-hand smoke occurred within the two years before the clinical worsening of tinnitus;
            Note: being exposed to second-hand smoke is defined in the Schedule 1 - Dictionary.
(47)      having inner ear exposure to a chemical agent from the specified list of chemical agents within the 30 days before the clinical worsening of tinnitus;
             Note 1: Inner ear exposure to a chemical agent will only occur in the presence of a defect in the tympanic membrane.
            Note 2: specified list of chemical agents is defined in the Schedule 1 - Dictionary.
(48)      having a vascular, muscular or other anatomical source of sound that can be transmitted to the affected ear at the time of the clinical worsening of tinnitus;
Note: vascular, muscular or other anatomical source of sound is defined in the Schedule 1 - Dictionary.
(49)      having a reduced supply of blood to an auditory structure of the affected ear at the time of the clinical worsening of tinnitus;
             Note 1: Examples of causes of a reduced supply of blood to