Annex 3: Calculation Of Diagnostics - Sibelmed SIBELSOUND DUO Manual De Uso

SIBELSOUND
DATA PROCESSING
This audiometer can transfer files with patients' data to a computer, which will then be used with the W50 Audiometry Software.
This software also complies with the Spanish Data Protection Organic Law,
as specified in its User Manual.

ANNEX 3: CALCULATION OF DIAGNOSTICS

1. 'MINISTRY' DIAGNOSIS
The percentage of hearing loss is determined from the tonal audiogram for the 500, 1000, 2000 and 3000 Hz frequencies,
and according to the evaluation criteria of disabilities caused by hearing impairment, as specified by the Ministry of Labor and Social
Affairs, BOE document no. 22 from January 26 2000.
A. Monoaural Hearing Loss
• Add up the hearing thresholds from the 4 frequencies for each ear.
• Hearing Loss (%) = Value from Table 1 corresponding to the sum of the thresholds. If the sum result is below 100 dB, it will
not be classed as hearing loss.
• Average dB = (total thresholds) / 4.
A. Bilateral Hearing Loss
• Bilateral Loss (%) = (5 * (loss % in the best ear) + (loss % in the worst ear)) / 6.
C. Diagnostic Classification of the Hearing Impairment
The MINISTRY diagnosis does not establish any diagnostic classification for hearing loss, although health specialist recommend
implementing the following in the unit:
• NORMAL 0 to 10%
• SLIGHT HYPOACUSIA 11 to 30%
• MODERATE HYPOACUSIA 31 to 60%
• SEVERE HYPOACUSIA 61 to 100%
520-800-MUM · Rev 1.01
DUO
· User's manual
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