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Biomedical subjects

Jonathan Evans

Publications and source records attributed to Jonathan Evans.

8 recordsLinked to original sources
PubMed2003

Children presenting at UK community enuresis clinics--comparison with hospital-based samples.

OBJECTIVE: This study compares the clinical and psychosocial characteristics and the treatment outcomes of bedwetting UK children presenting at a community enuresis service with those from studies conducted in hospital-based settings. MATERIAL AND METHODS: Cluster stratification by clinic was applied to ensure that the population attending the 15 enuresis clinics selected was representative. Parents completed the maternal tolerance scale and children completed the impact of bedwetting and Coopersmith self-esteem scales. The electronic databases MEDLINE and CINAHL were searched for the years 1966-2002 for UK-based empirical studies conducted in children aged 5-16 years with nocturnal enuresis. RESULTS: Children in the community sample were younger and had more day-time wetting than the hospital-based population but did not have significantly lower self-esteem. The impact of bedwetting had the strongest relationship with the Coopersmith self-esteem score, followed by ethnicity and the maternal tolerance score (beta = -0.49, p < 0.001; beta = 2.83, p < 0.001; and beta = 0.45, p = 0.015; respectively). CONCLUSION: Primary referrals to community enuresis services are younger and have more day-time wetting than those attending hospital-based clinics but the majority do not have low self-esteem. Ethnicity appears to be an important factor in evaluating the impact of wetting on the child.

Adolescent↗
PubMed2003

Impact of the ICD-10 Primary Health Care (PHC) diagnostic and management guidelines for mental disorders on detection and outcome in primary care. Cluster randomised controlled trial.

BACKGROUND: The World Health Organization (WHO) ICD-10 Primary Health Care (PHC) Guidelines for Diagnosis and Management of Mental Disorders (1996) have not been evaluated in a pragmatic randomised controlled trial (RCT). AIMS: To evaluate the effect of local adaptation and dissemination of the guidelines. METHOD: Pragmatic, pair-matched, cluster RCT involving 30 practices. RESULTS: Guideline practices were less sensitive but more specific in identifying morbidity, but these differences were not significant. Guideline patients did not differ from usual-care patients on 12-item General Health Questionnaire scores at 3-month follow-up or in the proportion who were still cases. There were no significant differences in secondary outcomes. CONCLUSIONS: Attempts to influence clinician behaviour through a process of adaptation and extension of guidelines are unlikely to change detection rates or outcomes.

Adult↗
PubMed2003

Preliminary report of a NeuroPage service within a health care system.

NeuroPage, a paging service designed to reduce the everyday memory and/or planning problems of people with neurological deficits, is described. Following several research studies carried out to evaluate the system, a British local health authority set up a nationwide commercial NeuroPage service. A report on the first 40 clients recruited to the service is provided. The age range was 14-81 years, the majority of clients were men and the most frequent diagnosis was traumatic brain injury although a number of different diagnostic groups were represented. The types of messages sent and the group's satisfaction with NeuroPage are considered. Three brief case studies to illustrate the different ways clients used the system are presented.

Adolescent↗
PubMed2002

Standards for renal biopsies: comparison of inpatient and day care procedures.

There are no national standards for the adequacy and complications of percutaneous renal biopsies. We developed local standards that have been used in a prospective audit of biopsies undertaken in a tertiary pediatric nephrology unit between January 1997 and December 2000. We compared outcomes of biopsies performed on inpatients with day care procedures. A total of 251 biopsies (113 transplant) were undertaken, 114 (46%) as day care procedures. Adequate tissue for diagnosis was obtained in 245 (97.6%), with a standard set at >95%. This was also achieved for a mean number of passes in native (<3 in 80%) and transplanted (<2 in 80%) kidneys. Eleven patients (4%) developed macroscopic hematuria (standard <5%) and none required transfusion. Delay in discharge occurred in 4 patients, and a further 4 returned to the ward post discharge. There was no significant difference in complication rates between inpatient and day care patients. Our local biopsy standards were met in this audit. Such standards could provide useful comparisons between units in national audit programs, as well as permitting the monitoring of individual performance as part of clinical governance. Day care procedures benefit the patient and family, as well as significantly reducing costs.

Adolescent↗
PubMed2002

Prospective memory functioning in people with and without brain injury.

Prospective remembering has been relatively underinvestigated in neurological patients. This paper describes a group study in which the prospective memory performance of 36 people with brain injury and 28 control participants is compared. We used a new instrument, the Cambridge Behaviour Prospective Memory Test (CBPMT) to assess prospective memory. This comprises 4 time-based and 4 event-based tasks. Participants were allowed to take notes to help them remember the tasks. The relationships between CBPMT scores, scores on formal tests and subjective reports on memory, attention and executive functioning were analyzed. The key findings were that (1) note-taking significantly benefited prospective memory performance, (2) significant relationships were found between scores on the prospective memory test and scores on tests of memory and executive functions, and (3) participants had more difficulty with the time-based than with the event-based prospective memory tasks. The results suggest that compensatory strategies improve prospective memory functioning; memory for content as well as attention and executive functioning processes are involved in prospective memory; and that time-based tasks are more difficult than event-based tasks because they place higher demands on inhibitory control mechanisms. Discussion focuses on the implications of these results for neuropsychological assessment and rehabilitation.

Adaptation, Psychological↗
PubMed2002

Growth hormone has anabolic effects in glucocorticosteroid-dependent children with inflammatory bowel disease: a pilot study.

The present studies were designed to determine whether recombinant human growth hormone (rhGH) can counteract some of the catabolic effects of glucocorticosteroid therapy in children chronically treated with glucocorticosteroids. Whether rhGH can safely improve short-term linear growth was also investigated. The effect of rhGH on disease activity was also assessed. Ten children (6 boys, 4 girls) with inflammatory bowel disease (IBD) on oral prednisone for at least 4 months prior to these studies were recruited (mean +/- SE, 11.9 +/- 0.9 years). Leucine and glucose isotope studies, body composition, substrate oxidation and energy expenditure rates, and growth factors were measured at baseline (D1) and at 4 months after treatment with rhGH (0.05 mg/ kg. d subcutaneously [SC]) while continuing oral prednisone. Dual-emission x-ray absorptiometry (DEXA) and calcium kinetic analysis ((42)Ca/(46)Ca) were performed also. rhGH was continued for 6 months to assess linear growth in all 10 subjects, 7 of whom continued rhGH for 12 months. Body composition changed favorably with increased fat free mass (+3 kg, P =.001) and decreased percent fat mass (-3.5%, P =.001) after 4 months of treatment. Rates of whole body protein turnover, oxidation, and synthesis remained invariant, with no changes in substrate oxidation or resting energy expenditure rates. Linear growth velocity increased from 3.5 +/- 0.4 cm/yr when the patients were treated with prednisone only, to 7.7 +/- 0.9 after 6 months of combined prednisone/rhGH (P =.001). The growth velocity was sustained in the 7 patients treated with rhGH for 12 months. Plasma insulin-like growth factor I (IGF-I) and insulin-like growth factor binding protein-3 (IGFBP-3) concentrations also increased significantly while on rhGH treatment. No changes in calcium absorption were observed but there was a significant increase in kinetic rates of bone calcium accretion (P =.045) as well as in bone-specific alkaline phosphatase concentrations, a measure of bone formation (P =.03). Fasting and 2-hour postprandial glucose concentrations, fasting insulin levels, and HbA(1C) were invariant during combined rhGH/prednisone treatment. The Crohn's disease activity score was unchanged with rhGH therapy. In summary, rhGH treatment of corticosteroid-dependent patients with IBD was associated with positive changes in body composition, bone metabolism, and linear growth, without deterioration of carbohydrate tolerance or intermediate metabolism of substrates. We conclude that treatment with rhGH has beneficial effects in prednisone-dependent growing children. Larger studies will be needed to assess the long-term safety and efficacy of this approach.

Adolescent↗
PubMedDate not supplied

Antibiotic prescribing and outcomes following treatment of symptomatic urinary tract infections in older women.

OBJECTIVE: To describe antibiotic prescribing patterns for the treatment of urinary tract infections (UTI) among older women female long-term care facility residents and evaluate factors associated with adverse outcomes METHODS STUDY DESIGN: Population-based retrospective cohort study. Population and sampling frame: All female residents of Olmsted County, Minnesota, aged 65 years and older, who were treated for urinary tract infections during calendar year 1996 were included in the study. DATA COLLECTION: Subjects' complete medical records were reviewed and abstracted. Data collected included age, weight, serum creatinine, antibiotic treatment including dosage and duration, as well as retreatment and adverse drug events. RESULTS: A total of 196 subjects, ranging in age from 65 to 98 years, were diagnosed with UTI during calendar year 1996. Forty-four subjects were nursing home residents, and 152 resided in the community. The odds of prolonged antibiotic therapy (7 days or more) were 83 times higher among nursing home residents (Odds ratio = 82.7, 95% Confidence Interval, 11.1-617.7). The odds of receiving treatment for 10 days or longer were 5 times higher among nursing home residents compared to community subjects. The odds of underlying renal impairment necessitating dosage reduction were 3.6 times higher among nursing facility residents. Nursing facility residents were 7.3 times more likely to be treated with excessive dosages of antibiotics, 9.6 times more likely to experience adverse drug events, and 2.6 times more likely to receive retreatment for persistent or recurrent symptoms within one week of antibiotic discontinuation, compared to community subjects with UTI. CONCLUSIONS: Nursing home residents with UTI are treated for longer durations than community elderly. They experience a greater likelihood of receiving antibiotics in excessive dosage, a greater likelihood of adverse drug events, and a greater likelihood of retreatment compared with community subjects with UTI.

Journal Article↗