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Biomedical subjects

J K Nelson

Publications and source records attributed to J K Nelson.

At least 37 records · Page 2Linked to original sources
PubMed1990

Effects of age and prosthesis material on in vitro cartilage retention of laryngoplasty prostheses in horses.

Cartilage retention strengths of laryngoplasty prostheses were compared in larynges of 2-, 3-, and 4-year-old horses, using doubled polyester and expanded polytetrafluoroethylene prostheses. Bilateral laryngoplasties were performed on each of 15 (seven 2-year-old, two 3-year-old, and six 4-year-old) larynges, which were collected at an abbatoir. Prostheses were secured to a mechanical testing machine, and tension causing arytenoid cartilage abduction was applied, until total failure of the cartilage or prosthesis resulted. Tension caused cricoid cartilage failure in 1 specimen, and muscular process cartilage failure in the remainder. There was no significant effect of age, prosthetic material, or side of prosthesis placement on cartilage retention of the prostheses. Additionally, frequency of multiple load-displacement peaks, indicating partial muscular process failure, was not affected by age or prosthetic material variables.

Age Factors↗
PubMed1986

Clinical and laboratory characteristics of patients with speckled pattern antinuclear antibodies.

Fifty patients whose sera contained a speckled antinuclear antibody (ANA) were interviewed and examined to determine if there was any relationship between their clinical manifestations and the presence of certain serological markers. The results suggest that speckled ANA is usually found in patients with definite connective tissue diseases, but a significant minority have incomplete or early stages of these diseases. Characterisation of the antibody to extractable nuclear antigen (ENA) and other serological markers does not normally assist in making a clinical diagnosis, but the detection of a speckled ANA should prompt further investigation and careful follow-up.

Adolescent↗
PubMed1983

Safety of reusing disposable plastic insulin syringes.

53 diabetic patients took part in a study to assess the safety of reusing plastic disposable syringes for insulin injection. Each patient used the same plastic syringe for 7 days. The syringe needles were changed when blunt. No patient developed signs of infection at the injection site. Bacteriological assessment of the used syringes and needles showed no contamination in any of the syringes, although one needle was contaminated. The effectiveness of bacteriostatic additives to insulin preparations was demonstrated. The presence of these additives renders safe the practice of a diabetic patient reusing a plastic disposable syringe over a 7-day period.

Adolescent↗
PubMed1980

Referrals to psychiatric liaison nurses: changes in characteristics over a limited time period.

This article reviews the literature on the consultant/consultee relationship within psychiatric liaison nursing. Data on 284 referrals from staff nurses to psychiatric liaison nurses (PLNs) in a teaching hospital are examined to discover whether the nature of the referrals changes with the evolving consultation relationship. Referrals are found to change over time in their specificity, focus, level of sophistication, and kind of PLN involvement requested. Possible explanations for these changes are discussed.

Hospitals, Teaching↗
PubMed1979

Effects of background music on musical task performance and subsequent music preference.

The present study examined the effects of background music on performance of a musical task and on subsequent preference for that music. 60 music and 60 non-music majors heard background music in music-only or music-plus-task conditions, and a third group heard no music in a task-only condition. A preference test of four musical excerpts, including the background [corrected] music excerpt, was administered subsequently to all three groups of subjects. Although music majors scored higher than non-majors, background music did not differentially affect task scores. Music students exhibited a differential preference following both musical conditions, while non-music subjects demonstrated differential preference only following the music-only condition.

Achievement↗
PubMed1978

Comparative trial of atenolol and propranolol in hyperthyroidism.

1 The use of atenolol, a cardioselective beta-adrenoceptor antagonist, in the management of hyperthyroidism has been studied by comparing it with propranolol. 2 In a double-blind cross-over trial, atenolol (50 mg), propranolol (40 mg) and placebo 4 times daily for 1 week were compared in twenty-one hyperthyroid patients by sequential analysis. 3. Patients generally preferred atenolol or propranolol to placebo but this preference only achieved significance with propranolol. 4 Judged by their effect on the symptoms and signs of hyperthyroidism, both atenolol and propranolol were significantly better than placebo, but no distinction could be made between the two active compounds. 5 Atenolol and propranolol reduced mean heart rate by 29.8 and 27.1% respectively compared with placebo. 6 Atenolol appeared almost equally effective to propranolol in the management of the peripheral manifestations of hyperthyroidism.

Atenolol↗