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Biomedical subjects

C Beynon

Publications and source records attributed to C Beynon.

11 recordsLinked to original sources
PubMed2001

Spinal shrinkage during a seated break and standing break during simulated nursing tasks.

Prevalence rates for back pain in nurses are comparable to rates of workers in heavy industry. Spinal loading is one factor thought to be associated with the onset of back problems. Loading can be measured indirectly using precision stadiometry, with changes in stature indicating the magnitude of the loading over time. Ten female subjects completed 4 h of simulated nursing activities on two separate occasions. The two trials were identical except that subjects were asked to sit for a 20-min break in one and stand for a 20-min break in the other trial. Heart rate, discomfort, rating of perceived exertion and spinal shrinkage were recorded at various intervals throughout testing. Spinal shrinkage was significantly less during the seated trial than the standing trial (p<0.05). It is suggested that a seated break during a nursing shift may reduce the potential of suffering back problems resulting from spinal loading.

Adult↗
PubMed2001

Hidden need for drug treatment services: measuring levels of problematic drug use in the North West of England.

BACKGROUND: In the North West of England, data on drug users are routinely collected from a variety of agencies including specialist treatment centres, police and probation services. However, the covert nature of drug use means that alone, these conventional monitoring systems cannot provide the epidemiology required to target and develop drug treatment and prevention initiatives. METHODS: Utilizing surveillance data and capture-recapture techniques we estimate the rates of problematic drug users by age and sex in five North West health authorities and one local authority. RESULTS: Analyses show concentrations of problematic drug use in large metropolitan areas (Liverpool and Manchester) with levels as high as 34.5 and 36.5 per 1000 population (ages 15-44), respectively, and, for males, levels exceed 50 per 1000 in three authorities. Patterns of prevalence for those aged 25 and over differed from those in the younger age groups, with disproportionate levels of young users outside metropolitan areas. The proportion of young users already in treatment (21.3 per cent) was lower (older users, 35.3 per cent), with overall proportions in treatment varying between health authorities (range 26.2-46.5 per cent). CONCLUSION: With a multi-agency approach, established monitoring systems can be used to measure hidden populations of drug users. Estimates of the current populations of such users in the North West of England suggest that planned increases of people in treatment by 100 per cent would fail to accommodate even current level of problematic users. A holistic approach to new initiatives must ensure that the high level of relapse once drug users are discharged are reduced and that the needs of young users are addressed before prolonged treatment is required.

Adolescent↗
PubMed2000

Microsatellite marker based genetic linkage maps of Oreochromis aureus and O. niloticus (Cichlidae): extensive linkage group segment homologies revealed.

Partial genetic linkage maps, based on microsatellite markers, were constructed for two tilapia species, Oreochromis aureus and Oreochromis niloticus using an interspecific backcross population. The linkage map for O. aureus comprised 28 markers on 10 linkage groups and covered 212.8 CM. Nine markers were mapped to four linkage groups on an O. niloticus female linkage map covering 40.6 CM. Results revealed a high degree of conservation of synteny between the linkage groups defined in O. aureus and the previously published genetic linkage map of O. niloticus.

Animals↗
PubMed2000

Effects of activity-rest schedules on physiological strain and spinal load in hospital-based porters.

Workers in physically demanding occupations require rest breaks to recover from physiological stress and biomechanical loading. Physiological stress can increase the risk of developing musculoskeletal disorders and repeated loading of the spine may increase the potential for incurring back pain. The aim of the study was to assess the impact of an altered activity-rest schedule on physiological and spinal loading in hospital-based porters. An existing 4-h activity-rest schedule was obtained from observations on eight male porters. This schedule formed the normal trial, which included two 5- and one 15-min breaks. An alternative 4-h schedule was proposed (experimental condition) that had two breaks each of 12.5 min. It was hypothesized that the experimental trial is more effective in promoting recovery from physiological strain and spinal shrinkage than the normal trial, due to the 5-min breaks being insufficient to allow physiological variables to return to resting levels or the intervertebral discs to reabsorb fluid. Ten males performed both test conditions and oxygen uptake VO2, heart rate, minute ventilation VE, perceived exertion and spinal shrinkage were recorded. There were no significant differences in any of the measured variables between the two trials (p > 0.05). Median heart rates were 78 (range 71-93) and 82 (71-90) beats.min(-1) for the normal trial and the experimental trial respectively, indicating that the activity was of low intensity. The light intensity was corroborated by the oxygen uptakes (0.75, range 0.65-0.94 1.min(-1)). Spinal shrinkage occurred to the same extent in the two trials (2.12 +/- 3.16 mm and 2.88 +/- 2.92 mm in the normal trial and the experimental trial respectively). Varying the length and positioning of the rest breaks did not significantly affect the physiological responses or magnitude of spinal shrinkage between the two trials. More physically demanding work than the porters' schedule should induce greater physiological fatigue and spinal shrinkage. The ratio between activity and rest breaks would then become more important.

Adult↗
PubMed1999

Self-efficacy of preceptors in the community: a partnership between service and education.

Developing partnerships between service and education is one strategy to enhance student learning. A pre-test-post-test design was used to compare changes in perceptions of self-efficacy expectations in the supervision of a team of four senior nursing students. A convenience sample of eight community practitioners completed the Community Advisor Self-Efficacy (CASE) questionnaire prior to and following a 13 week community health practicum. Following the community practicum, the preceptors were also invited to attend a focus group to discuss their experience. No significant differences were found between the pre- and post-self-efficacy scores. Community practitioners felt reasonably confident in assuming the preceptor role. They felt most efficacious in encouraging students to use agency personnel and in providing student feedback, but somewhat less confident in areas such as selecting learning experience congruent with course objectives, and trusting the students' readiness to work with communities. All strategies to assist the preceptors in assuming their role were considered helpful. Evidence of the preceptors and faculty advisors working in partnerships with the students was not clearly evident. Findings are being used to refine strategies for preparing and supporting agency personnel for their role in working with students.

Adult↗
PubMed1999

Health information telephone service for seniors.

The use of the telephone as a medium for providing health information and support specifically to seniors is relatively new. Of the more than 80 Canadian services, apparently only two are dedicated exclusively to older people. Recently, nursing faculty from The University of Western Ontario in London, Ontario, conducted a survey to assess the need for, and probable use of, a free health information telephone service for seniors in the community.

Aged↗
PubMed1993

Theory-based practice: attitudes of nursing managers before and after educational sessions.

In Canada, professional associations are mandating theory-based nursing as a standard of practice. Few systematic studies of nurses' attitudes toward, knowledge of, and exposure to theory-based nursing are in the literature. We used a convenience sample of nursing managers in a public health department to describe these aspects before and after an educational program, and to identify preferred ways of learning about nursing models. The managers had moderately positive attitudes toward theory-based nursing, which increased and were maintained six months after an educational program. Case studies and small group discussions were preferred over lectures and reading as methods of learning nursing theory. The significant increases in positive attitudes after the educational program suggest that knowledge and experience in applying nursing theory had an impact on the managers' attitudes. Managers identified a need to explore a variety of models before making a commitment to one. Leadership, commitment, and careful planning are required when the decision to introduce a model is made.

Adult↗