air-bone gap


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air-bone gap

the difference between the thresholds for hearing when the stimuli are delivered by air conduction and by bone conduction.

air-bone gap

(âr′bōn′)
n.
The difference between the threshold for hearing acuity by bone conduction and by air conduction.

air-bone gap

(ABG) (ār-bōn gap)
An abnormal condition in which the auditory threshold for an air-conducted test tone is higher than that for a bone-conducted test tone of the same frequency.
See also: conductive hearing loss

air-bone gap

(ār-bōn gap)
An abnormal condition in which the auditory threshold for an air-conducted test tone is higher than that for a bone-conducted test tone of the same frequency.
See also: conductive hearing loss
References in periodicals archive ?
Air-Bone Gap (ABG) on PTA###45.63+-8.35###7.41+-3.51###<0.05
Whereas, there were no statistically significant differences between the perforation location groups of Group 1 and Group 2 in terms of mean air conduction threshold, mean air-bone gap, and PTA1-PTA2 values on the Mann-Whitney U test (p-value: 0.248 and 0.35 for PTA1 and PTA2, respectively).
Both the change in hearing level and air-bone gap reached a level of significant improvement at 500 Hz (tables 1 and 2).
In both cases, the promontory lip was not removed, but a closure of the air-bone gap was achieved (as in patients 6 and 12).
The decrease in air-bone gap measure-ments between the first and third records could be considered to positively affect hearing.
26 number of the patients showed air-bone gap between 25-350 dB and 14 number of the patients showed air-bone gap between 36-45 dB.
Some authors advocate surgery only for patients with an air-bone gap (ABG) >30 dB, (5) while others accept 25 dB6 or 15 dB, (2) with current guidelines advocating surgery for an ABG >20 dB.
Hearing was rendered as effective increase when air-bone gap was decreased by 15 dB after surgery.
The air-bone gap had narrowed to 13.8 [+ or -] 6.0 dB after surgery (424 dB) (P = 0.0001).
Out of 25 patients with stapedotomy, 22 (88%) developed complete closure of the air-bone gap (<10 dB) on pure tune audiometry.
of patients 20 9 Preoperative ABG (dB) 33.4 29.9 Postoperative ABG (dB) 18.3 14.9 [DELTA] ABG (dB) 15.2 14.9 Rate of successful ossiculoplasty (%) 65 77.8 ABG: air-bone gap; [DELTA] ABG: air-bone gap change.