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Biomedical subjects

J B Peacock

Publications and source records attributed to J B Peacock.

26 records · Page 2Linked to original sources

Factors limiting extremity function following vascular injury.

The clinical management of 47 patients with vascular injuries of the extremities is presented with emphasis on functional results. The method of restoration of vascular continuity or the presence of associated fractures or venous injury had little bearing on either the success of arterial repair or functional result. The most significant factor adversely affecting restoration of extremity function was the presence of associated major proximal nerve injury.

Adolescent↗

A technique for measuring blood pressure in a medical evacuation helicopter.

In view of the increasing use of helicopters in the evacuation of patients in both military and civilian settings and the longer missions being flown, more efficient methods of monitoring patients' vital signs are needed. One such method has been evaluated utilizing the ultrasonic flowmeter to measure blood pressure. This study indicates that a reliable technique is now available for measuring systolic blood pressure even in low flow states in the noisy environment of a medical evacuation helicopter.

Aerospace Medicine↗

Reported morbidity and the weather.

Some observations have been made about the influence of the weather on the use of the general-practitioner service. It is difficult to disentangle the biological and behavioural components of these findings, but in general extremes of weather-low temperatures and sunshine in winter and high temperatures and sunshine in summer-appeared to increase the numbers of reported episodes of respiratory illness.

Adolescent↗

Frequency analysis of commercially available vibrators.

The tonic vibration reflex -- elicitation of a muscle contraction by mechanical vibration -- is a well documented physiological phenomenon of particular relevance to physiotherapy. Among the critical features pertaining to the effectiveness of its use in clinical practice are the mechanical attributes of the vibrator used to elicit the reflex. Because physiological responses differ with vibrations of varying frequency and amplitude, it is necessary to measure these characteristics before a commercial vibrator is used therapeutically: Facilities and equipment for performing such tests are, however, not readily available to physiotherapists. The purpose of this study, therefore, was to measure and compare frequencies of a variety of commercially available vibrators under varying load conditions and over time. Vibrators from major Canadian retail outlets and manufacturers were obtained and, through the use of both mechanical and optical methods, a total of 19 models were frequency-calibrated. The results of the study permit discussion related to the suitability and reliability of each model and provide specific guidance to physiotherapy departments in the selection of appropriate therapeutic vibrators. The results also indicate that the mode of application, such as strapping the apparatus to the patient rather than having the operator hold it in her hand, affects the frequency in some models. The data related to frequency measurements, gained through this study, should enable therapists to make more effective use of commercially available vibrators in motor reeducation.

Canada↗