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Biomedical subjects

A Fries

Publications and source records attributed to A Fries.

6 recordsLinked to original sources
PubMed1991

[Environmental access to a rehabilitation center as a determinant of attitude to handicapped persons? A comparative empirical study of assumptions of the "contact hypothesis"].

A total of 263 respondents were interviewed relative to their attitudes towards disabled persons, using a standardized questionnaire. Of these 263 subjects, 144 lived in a community without any facility for disabled persons in the vicinity, 119 subjects lived close by a physically disabled persons centre. The "attitudinal climate" among all interviewees on the whole more on the positive side, it was found that those living in the vicinity of a physically disabled persons centre, though expressing less contact uneasiness when meeting physically handicapped children and young people, did however not give more positive--but neither more negative--opinions in other respects than those subjects not living near a facility for the disabled. The results obtained were further analyzed on the variables of age, sex, and closer contacts with disabled people among friends. It has, once again, been confirmed that attitudes toward disabled persons constitute a multidimensional construct that, to varying degrees, is influenced by a number of factors. Some consequences and considerations in terms of educational implementation possibilities of the findings are outlined in conclusion.

Adolescent↗
PubMed1986

Information seeking of high- and low-anxiety subjects after receiving positive and negative self-relevant feedback.

The present paper reports an experiment in which subjects received fictitious intelligence test feedback that was either negatively or positively discrepant with their self-evaluation. They were then given an opportunity to choose among several articles containing information that either derogated intelligence tests (test-disparaging information) or argued for their validity (test-supporting information). The main finding of this study consists of an interaction between the personality factor anxiety and the feedback variable: High-anxiety subjects prefer test-disparaging information significantly more in the negative feedback condition than in the positive feedback condition, whereas low-anxiety subjects show no difference in preference for test-related information as a function of the feedback condition. These results are in line with past theoretical reasoning and experimental findings showing that high-anxiety subjects feel more threatened by negative self-relevant feedback than do low-anxiety subjects.

Adolescent↗
PubMed1985

[Animal experiment results with a new vena cava filter].

A new cava filter has been tried in 23 dogs weighing between 16 and 23 kg. The filter consists of a stainless steel basket which can be introduced either antegrade or retrograde through a 10F teflon catheter and which can be removed again within the first four days. The filter was effective in holding back embolising thrombus. In the early stages, even without artificial embolisation, two out of five animals showed clot formation in the basket. After three or four months, all the filters were permeable and on only two occasions was a small amount of thrombus found.

Angioplasty, Balloon↗
PubMed1985

Vena caval filter to prevent pulmonary embolism: experimental study. Work in progress.

A new inferior vena caval filter was tested in an experimental series of 23 dogs and in an in vitro study. The filter consists of a pliable basket and anchoring legs made of stainless steel. It can be inserted percutaneously in an antegrade or retrograde fashion through a 10-F Teflon catheter and can be retrieved with a snare or forceps. The filter is self-orienting in the inferior vena cava, becomes securely the inferior vena cava, becomes securely fixed to the wall, and has exhibited no tendency to migrate. It is highly effective in capturing small and large emboli. There was no significant elevation in upstream hydrostatic pressure following entrapment of emboli. Spontaneous thrombus formation within the basket was observed in two of six dogs who had short-term follow-up. In dogs who had long-term follow-up, the filter remained patent. Microscopically, the filter caused sclerosis of the intima where the wire was in contact with the vessel wall. Breakage of an anchor leg and separation at the fusion between anchor and basket were seen in the study. They were eliminated by improvement of the prototype, which is now ready for clinical application.

Animals↗