Examen Integrado Fonoaudiología Practice Questions - Examen Integrado De Residencias Del Equipo De Salud - Fonoaudiología (Argentina) Exam

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A 45-year-old patient presents with an unmasked air conduction threshold of 60 dB HL in the right test ear at 1000 Hz using supra-aural earphones. The unmasked bone conduction threshold in the left non-test ear is 10 dB HL. Applying Hood's plateau masking method, why is masking the non-test ear mandatory, and how is the minimum initial effective masking level determined?

Masking is required because the test ear air threshold exceeds the non-test ear bone threshold by ≥ 40 dB; initial masking is set at the non-test ear air threshold plus a safety factor Masking is required only if the air-bone gap in the test ear exceeds 30 dB; initial masking is set at 10 dB above the test ear threshold Masking is not required because the air conduction threshold in the non-test ear is within normal limits regardless of bone conduction Masking is required only for bone conduction testing; air conduction never requires masking when using supra-aural transducers

Correct Answer:

Masking is required because the test ear air threshold exceeds the non-test ear bone threshold by ≥ 40 dB; initial masking is set at the non-test ear air threshold plus a safety factor

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