[The use of an automatic device for recording the recovery time from auditory fatigue in flight personnel exposed to noise]. / Considerazioni sull'impiego della registrazione automatica del tempo di recupero della pratica uditiva (P.A.T.) nel personale aeronavigante esposto a rumore.

The results of a study conducted on individuals exposed to aeronautical environment noise (flight personnel, runway operators, mechanics etc.) are reported. A particular suprathreshold automatic audiometric technique, called P.A.T. (automatic Peyser test) was used because there was evidence that it was more trustworthy than other suprathreshold tests and because this test permits a graphic follow-up of the dynamic evolution of "uditive fatique" phenomenon. The conclusion is drawn with this method it is possible to evaluate more precisely both the entity of the damage and on possible suffering of Corti's organ in individuals exposed to noise, and the simplicity of the test is underlined. Moreover the test is advantageous because it can be done using the normal routine diagnostic apparatus.

Arthritis of the middle ear in ankylosing spondylitis.

A case of ankylosing spondylitis with aortic valve disease and hearing loss is described. A series of radiographic and audiometric investigations showed the hearing loss to be of a conductive type. It seemed most likely that the hearing loss was related to an inflammatory involvement of the ossicular joints due to the primary disease. No other case of conductive hearing loss has previously been reported due to otoarthritis in ankylosing spondylitis. This is important both theoretically and practically.