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J Norheim

Publications and source records attributed to J Norheim.

3 recordsLinked to original sources
PubMed2001

Snowmobile injuries in Svalbard--a three year study [corrected].

STUDY OBJECTIVE: To survey snowmobile injury events treated in Longyearbyen hospital, Svalbard and to report the injury distribution and characteristics for Svalbard residents and visitors driving snowmobiles. DESIGN: Prospective injury recording. SETTING: The Norwegian arctic archipelago, Svalbard during three years from 8 March 1997. PARTICIPANTS: The person years of the study, estimated from yearly census data on Svalbard residents, were 4211. In 1998 the number of registered snowmobiles were 1342, of which about 250 were available for use to visitors. MEASUREMENTS AND MAIN RESULTS: The variables were selected and coded according to the Nordic system. Of 107 snowmobile injuries recorded, 85 occurred during March-May (79.4%). Nine out of ten injuries occurred during leisure driving. Visitors (N=51) had peak injury frequency in the age group 30-39 and an injury rate of 68.0 per 1000 registered vehicles per year. Residents had a corresponding peak in the 20-29 age group and injury rate four times lower. The upper (23.4%) and lower (22.5%) extremities were the most commonly injured. 32 injuries were non-minor. Of these, 7 had multiple injuries. The most seriously injured had ruptured abdominal organs (spleen, kidney) or fractures of long bones. There were no fatalities. CONCLUSION: The snowmobile injury rate per 1000 registered vehicles in Svalbard is three times higher for residents (17.4) than in Swedish Lappland. The injury rate for Svalbard visitors is four times higher than the resident rate. Eight out of ten snowmobile injuries occurred during March-May. Continuous prospective hospital recording of snowmobile injuries continues in Svalbard and will enable evaluation of preventive measures targeted as a result of the present study.

Adolescent↗
PubMed1984

Silver stains and immunocytochemical analysis with monoclonal serotonin antibodies for liver metastases of endocrine tumors. A study on percutaneous biopsy specimens.

With the aid of ultrasonography, representative percutaneous biopsy specimens were obtained from 20 of 21 patients (95 percent) with liver metastases of carcinoids and endocrine pancreatic tumors. The specimens were examined with silver stains and immunocytochemically after the application of monoclonal serotonin antibodies. The Grimelius argyrophil silver nitrate stain was positive in all tumor metastases, demonstrating that they were of neurohormonal endocrine type. The argentaffin reaction stained 14 of 15 metastases of small intestinal carcinoids, whereas tumors with other primary sites were unreactive. Immunocytochemical analysis with monoclonal serotonin antibodies stained all metastases of small intestinal carcinoids, and the other endocrine tumor metastases were unreactive. With immunocytochemical analysis, optimal results were obtained in Bouin-fixed tumor specimens, whereas for the argentaffin reaction, formalin was preferable. The results show that silver stains and immunocytochemical analysis with monoclonal serotonin antibodies on small percutaneous biopsy specimens of liver metastases of endocrine tumors and carcinoids are valid for the prediction of the location of the primary tumors.

Adolescent↗