pure tone average


Also found in: Acronyms.

pure tone av·er·age

(pyūr tōn av'răj')
The average hearing threshold level for the pure tone frequencies of 500 Hz, 1 kHz, and 2 kHz. These frequencies are referred to as speech frequencies because many of the English phonemes are within this frequency range. The pure tone average is a reliable indicator of the dB level at which a listener can hear speech.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Pure tone average 1 (PTA1) was calculated with air conduction thresholds at 500 Hz, 1000 Hz and 2000 Hz (0.5-2 kHz), and pure tone average 2 (PTA2) was calculated with air conduction thresholds at 1000 Hz, 2000 Hz and 4000 Hz (1-4 kHz).
The pure tone average (PTA) was determined by the average of the thresholds of 250, 500, 1000, 2000, 4000, and 8000 Hz.
pure tone average 0.5 kHz, 1 kHz, 2 kHz [+ or -] 12 dB) in the case of the Patient One was hardly disproportional to the average pure tone whereas a rollover phenomenon was found in the case of the Patient Two, with a rollover index 0.42 [29, 30].
Median pure tone average (PTA) values were less in patients with good glycaemic status as compared to those with poor glycaemic status.
Pure tone average (PTA) thresholds for frequencies of 0.5, 1, 2, and 4 kHz in the worse ear were 28.9 [+ or -] 14.1 dB HL for the control group and 33.9 [+ or -] 13.0 dB HL for the PD patients, indicating mild-to-moderate hearing loss for both groups, which was slightly worse for PD patients.
The pure tone average (PTA) was calculated as the mean of hearing thresholds at 500, 1000, 2000, and 4000 Hz.
By analyzing the sample of this study (Table 1), it is possible to observe there is a predominance of females (63.16%), with average age of 67.5 years; 55% of the sample presented normal hearing in both ears, and symmetrical pure tone average on mild to moderate hearing loss of sensorineural type.
Subjects were questioned to elicit otological and general medical conditions, underwent an ear, nose and throat examination, provided serum samples and a pure tone average hearing test was conducted.
Cisplatin-related ototoxicity is dose dependent, with initial hearing shifts in average hearing adults (SRO pure tone average = 70 decibels sound pressure level [dB SPL]) occurring at approximately 350 mg [6-7].
There was no statistically significant variation, according to the data obtained from the pure tone average threshold of the shockwave procedure on the otoacoustic emission test.
The size and location of the perforation was determined by microscopic evaluation, and the pure tone average was calculated by audiometric tests before and after surgery.
The audiometric scores analyzed for each ear were: speech discrimination; pure tone scores at frequencies of 250, 500,1,000, 2,000, 3,000, 4,000, 6,000, and 8,000 hertz (Hz); and the pure tone average over the 8 frequencies measured.