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Biomedical subjects

M H Cameron

Publications and source records attributed to M H Cameron.

6 recordsLinked to original sources
PubMed1992

Relative transmission of ultrasound by media customarily used for phonophoresis.

The purpose of this study was to determine the relative transmission of ultrasound by the media commonly used by physical therapists to apply phonophoresis. The relative transmission of ultrasound energy through various phonophoresis media was compared with that of degassed water, which is the ideal standard. Transmission was assessed by placing a thin layer of the test medium on the transducer of a therapeutic ultrasound unit and measuring delivery of ultrasound with an ultrasound power meter. The media evaluated produced two significantly different groups of transmission results: (1) transmission greater than 80% of that of water and (2) transmission less than 40% of that of water. Media that optimize the therapeutic efficacy of phonophoresis in both clinical and experimental settings are discussed.

Adrenal Cortex Hormones↗
PubMed1986

Development and testing of scoring systems for predicting infants with high-risk of sudden infant death syndrome in Melbourne.

Epidemiological surveys undertaken in Melbourne during the past 8 years have provided data on which a birth scoring system for infants at high-risk for sudden infant death has been derived. This scoring system was developed after testing scoring systems developed in Sheffield, UK, on Melbourne data and then extending these systems. Prospective trials carried out on a preliminary version of the extended system showed that it is effective in identifying infants at high-risk. The final version of the birth scoring system is capable of identifying a group of future live births which will have a risk of about one in 55 of sudden and unexpected death. The system is also capable of identifying infants with relatively low-risk.

Australia↗
PubMedDate not supplied

Mandatory bicycle helmet use: experience in Victoria, Australia.

On July 1, 1990, the legislation requiring wearing of an approved bicycle (safety) helmet by all pedal cyclists, unless exempted, came into effect in Victoria, Australia. The paper describes the more important activities which paved the way for this initiative and presents some preliminary information about the effect of the legislation on wearing rates and head injuries. Since 1980 there has been promotion of helmet use through bicycle education in schools, mass media publicity, support by professional organizations and community groups, bulk purchase schemes, and government rebates for helmet purchases. The Australian Standard for bicycle safety helmets has also been changed to meet community demands for lighter helmets with more provision for ventilation. There has been a steady increase in voluntary helmet use in Melbourne from 1983 to March 1990, as follows: 5% to 70% in primary school children; 2% to 20% in secondary students; and 27% to 40% in adults. In the period after the legislation, with relatively little enforcement, these three groups have shown substantial increases in helmet use rates, rising to 70-90% in most cases. Preliminary data show that the numbers of bicyclists with a head injury have dropped in the period since the legislation came into effect. The possible contributions to this reduction, of less bicycle use and lower risk of head injury in an accident, are discussed.

Australia↗