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K Friesen

Publications and source records attributed to K Friesen.

4 recordsLinked to original sources
PubMed1998

Evaluation of EMG signals from rehabilitated patients with lower back pain using wavelets.

This paper reports the preliminary results of an analysis of surface EMG signals obtained from rehabilitated patients with lower back problems using discrete wavelet transform techniques. In our study, 12 patients with lower back pain were tested before and after rehabilitation. The reaction time difference (before and after rehabilitation) from the erector spinae muscle caused by sudden loading was determined. The results indicated that the reaction time after rehabilitation was shorter than that before rehabilitation for about 45% of the tested cases.

Artifacts↗
PubMed1993

Defusing technology. Technology diffusion in British Columbia.

In order to explore the diffusion of the selected technologies in one Canadian province (British Columbia), two administrative data sets were analyzed. The data included over 40 million payment records for each fiscal year on medical services provided to British Columbia residents (2,968,769 in 1988) and information on physical facilities, services, and personnel from 138 hospitals in the province. Three specific time periods were examined in each data set, starting with 1979-80 and ending with the most current data available at the time. The detailed retrospective analysis of laboratory and imaging technologies provides historical data in three areas of interest: (a) patterns of diffusion and volume of utilization, (b) institutional profile, and (c) provider profile. The framework for the analysis focused, where possible, on the examination of determinants of diffusion that may be amenable to policy influence.

British Columbia↗
PubMedDate not supplied

Benign course after massive ingestion of yohimbine.

Yohimbine is an alpha 2 adrenoreceptor antagonist occasionally used in the treatment of impotence. Overdose of this drug is uncommon. We describe a 62-year-old male who ingested 100, 2.0 mg tablets whose only adverse effects were tachycardia, hypertension, and anxiety of brief duration. The limited experience to date suggests a benign course even after massive overdose. Observation would seem to be the management of choice.

Anxiety↗