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Biomedical subjects

P W Alberti

Publications and source records attributed to P W Alberti.

At least 19 recordsLinked to original sources
PubMed1979

An economic evaluation of present and proposed methods of compensating hearing loss.

The basis for compensation of industrial hearing loss in the Province of Ontario is described, and contrasted with schemes utilized in other parts of Canada, United Kingdom, Australia, and the United States. Changes are suggested for the method used to derive the percentage of permanent disability related to hearing loss. A randomly selected population of claimants for industrial hearing loss have been used to model the economic effect of such changes, which are discussed.

Audiometry↗
PubMed1979

The role of communication aids in the rehabilitation of hearing impairment.

The primary emphasis in rehabilitating the hearing impaired has involved fitting a hearing aid. There are patients however, who can be helped by communication aids in addition to, or in place of hearing aids. Communication aids include any device, other than a conventional hearing aid, which assists the hearing impaired in maintaining contact wiht the normally hearing. In Scandinavian countries a sophisticated system for rehabilitating the hearing impaired has evolved and communication aids are recommended extensively. Similar aids exist in North America, but clinicians have not yet developed a full awareness of how these devices can benefit their patients. This paper represents the results of a two year survey undertaken to identify and evaluate various devices available in Toronto. The contribution these aids can offer in rehabilitating patients is discussed.

Amplifiers, Electronic↗
PubMed1979

The effectiveness of hearing protectors in practice.

A series of workmen being evaluated for pensions for occupational hearing loss were asked to bring their own hearing protectors from work, to fit them themselves, following which attenuation studies were made. The muffs and most earplugs produced similar attenuation levels at high frequencies, although the muffs produced less attenuation at low frequencies. In all cases the mean attenuation was significantly lower than optimum figures suggested in the literature, and the standard deviation was relatively high. Personally molded earplugs were significantly less effective than other plugs used. Reasons are discussed for the relatively poor performance of these devices and the concept of assumed protection, i.e. mean minus one standard deviation, is discussed. There is need for better instruction on how to use hearing protectors if they are to be effective.

Adult↗
PubMed1977

The clinical utility of ipsilateral stapedius reflex tests.

Ipsilateral stapedius reflex testing has been evaluated in 166 patients. It proves of value in defining the state of an ear (1) opposite to a unilateral conductive loss; (2) the less hard-of-hearing ear in the presence of bilateral asymmetrical sensorineural hearing losses where the worse ear has sufficiently severe loss to prevent a contralateral reflex from being elicited; (3) in patients with absent contralateral acoustic reflexes at 500, 1000, and 2000 Hz; and (4) in suspected central lesions. The test is still bedevilled by artifacts which are produced in the ear rather than the machine; atypical results must be evaluated with extreme caution.

Acoustic Impedance Tests↗
PubMed1977

Traumatic thermal injuries of the middle ear.

Eleven cases of thermal otic injury are reviewed. The final outcome of therapy, whether medical or surgical is poor--only two of 11 patients were restored to normal. The possible pathogenesis of failure is discussed. Most cases could have been prevented by wearing ear plugs.

Accidents, Occupational↗