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Biomedical subjects

F Johnson

Publications and source records attributed to F Johnson.

At least 199 records · Page 11Linked to original sources
PubMed1977

Aspirin, phenacetin, and the kidney: a rheumatism clinic study.

In a rheumatism clinic study in Brisbane, the consumption of aspirin and phenacetin compounds (APC) containing more than one kilogram of aspirin and phenacetin was significantly associated with overt renal papillary necrosis (RPN) and with a renal score, but when more than one kilogram of aspirin was taken without phenacetin there was no such association. Analysis and comparison with the parallel New Zealand study showed an overall risk of RPN of at least 10-6% when more than one kilogram of aspirin was taken in APC form, and 0-3% when aspirin was taken without phenacetin. An additive interaction of phenacetin and aspirin is postulated. It is concluded that phenacetin use should be severely restricted.

Adult↗
PubMed1977

Neonatal intussusception. Report of 12 cases.

Twelve cases of neonatal intussusception are presented and another 25 taken from the literature are reviewed. Intussusception in the first month of life is a distinct clinical and pathological entity, presenting as bowel obstruction in the first days and usually led by a tumor. In the past, a high mortality rate has been related to late diagnosis. The barium-enema examination is diagnostic.

Female↗
PubMed1976

Chequerboard pattern reversal using a modified television display to measure visual evoked responses.

The clinical value of visual evoked response measurement is noted with particular reference to the stimulus source used. The complexities of response to brief flashes of light has led to the increased use of chequerboard reversal as a stimulus source. Thus far, the chequerboard reversal has been produced by opto-mechanical means. This paper presents the results of using a television display as the stimulus generator, and some of the advantages of such a purely electronic source of pattern reversal are discussed.

Data Display↗
PubMed1976

Microprocessors in health care: panacea or more effervescent technology?

The impact of microprocessors on medical instrumentation is explored, with particular reference to their role within a health care system that has finite resources. The authors present two examples of microprocessor use from their own experience and attempt to highlight both the merits and the disadvantages of the use of such technology by the hospital medical engineer.

Analog-Digital Conversion↗