Introduction; About This Manual; Intended Use; Contraindications For Performing Impedance Audiometry - Interacoustics AT235 Instructions For Use Manual

1 Introduction

1.1 About this Manual

This manual is valid f or the AT235 f irmware 1.42.
The product is manuf actured by:
Interacoustics A/S
Audiometer Allé 1d
5500 Middelf art
Denmark
Tel.: +45 6371 3555
Fax: +45 6371 3522
E-mail: inf o@interacoustics.com
Web: www.interacoustics.com

1.2 Intended Use

The AT235 is an automatic impedance audiometer with built-in screening audiometry suited f or screening, as
well as diagnostic work. Neonatal screening programs will particularly appreciate the presence of high probe
tone tympanometry, allowing more reliable tympanometric results in neonates.
The AT235 tympanometer is intended to be used by an audiologist, hearing healthcare prof essional, or
trained technician in a quiet environment.

1.3 Contraindications for performing impedance audiometry

Recent stapedectomy or other middle ear surgery
•
Discharging ear
•
• Acute external auditory canal trauma
• Discomf ort (eg severe otitis externa)
• Occlusion of the external auditory canal
Presence of tinnitus, hyperacusis or other sensitivity to loud sounds may contraindicate testing when
•
high intensity stimuli are used
Testing should not be performed on patients with such symptoms without a medical doctor's approval.
Visual inspection for obvious structural abnormalities of the external ear structure and positioning as well as
the external ear canal should be performed before testing.
D-0128073-C – 2022/05
AT23 5 - Instructions for Use - US Page 1