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Biomedical subjects

J Britton

Publications and source records attributed to J Britton.

At least 145 records · Page 8Linked to original sources

Hospital care for adults with cystic fibrosis: an overview and comparison between special cystic fibrosis clinics and general clinics using a patient questionnaire.

BACKGROUND: Provision of medical care for adult patients with cystic fibrosis is an increasing problem as the number of patients surviving into adulthood increases. Recent reports have suggested that care is best provided in specialist centres because of longer survival. Recent changes in the National Health Service funding and delivery of service may adversely affect the provision of such a specialist service. The aim of this study was to assess the current pattern of medical service received by adults with cystic fibrosis and to compare the type of care between special cystic fibrosis and general clinics. METHODS: Confidential postal questionnaires were sent to all 1052 members of the Association of Cystic Fibrosis Adults (ACFA) comprising 59% of the UK population of cystic fibrosis patients over 15 years and 80% over 25 years of age. The response rate was 82%. RESULTS: Two thirds of patients were attending special cystic fibrosis clinics for either adults or adults and children. There were significant differences in the proportion of patients using special cystic fibrosis clinics between regions but not between social class groups. Significant differences between cystic fibrosis and general clinics were noted. Patients attending cystic fibrosis clinics were more likely to have had simple clinical investigations (blood tests, sputum culture, oxygen saturation, chest radiography, weight and lung function measurement) in the previous year. They were also more likely to have received intravenous antibiotics at home, and to have access to paramedical personnel. Patients attending cystic fibrosis clinics were taking higher doses of pancreatic enzyme supplements with respect to quantity and potency of preparation. Such patients also had less severe symptoms irrespective of social class, and were more likely to be satisfied with professional aspects of their care. Regardless of type of clinic, potential deficiencies were identified in overall medical care with omission of clinical investigations in severely affected patients and evidence of undertreated respiratory and digestive symptoms in patients with moderate and severe disease. CONCLUSIONS: This survey provides evidence that adults with cystic fibrosis attending special cystic fibrosis clinics receive more intensive care, have better symptom control, and are more satisfied with the service provided than those attending general clinics.

Adolescent↗

Dietary sodium intake and the risk of airway hyperreactivity in a random adult population.

BACKGROUND: High dietary sodium intake has been identified as a potential cause of asthma and airway hyperreactivity. This study was designed to test the hypothesis that dietary sodium intake is an independent determinant of the risk of hyperreactivity in the general population, and to assess the role of atopy in the association between these factors. METHODS: Airway reactivity to methacholine, atopy, 24 hour urinary sodium excretion, and self-reported smoking and symptom history were measured in a random sample of 1702 adults aged 18-70 from an administrative district of Nottingham. Hyperreactivity was defined as a PD20FEV1 of 12.25 mumol or less, and atopy was defined quantitatively as the mean allergen skin weal response to Dermatophagoides pteronyssinus, cat fur, and grass pollen, and categorically as the occurrence of any allergen response 1 mm or greater than the saline control. Multiple logistic regression analysis was used to estimate the independent relative odds of hyperreactivity, atopy, or symptoms in relation to sodium excretion in all 1702 subjects, and multiple linear regression to assess the independent relation between sodium excretion and mean allergen skin weal diameter, and the PD20 value amongst hyperreactive subjects. RESULTS: There was no relation between the relative odds of hyperreactivity to methacholine and 24 hour urinary sodium excretion, either before or after adjustment for age, smoking, allergen skin weal diameter, and sex, and similarly no relation if the analysis was restricted to men or women only. The relative odds of having at least one allergen skin test response 1 mm greater than the saline control were increased in relation to sodium excretion after adjustment for age, sex, and smoking by a ratio of 2.08 (95% CI 1.04 to 4.15) per log10 unit increase in sodium excretion, but there was no evidence of an association between sodium excretion and the occurrence of self-reported wheeze, hay fever, eczema, or asthma. There was no relation between 24 hour sodium excretion and the magnitude of the mean allergen skin weal response or the PD20 value. CONCLUSIONS: These findings do not support the hypothesis that a high dietary sodium intake is a risk factor for airway hyperreactivity or atopic disease in the general adult population.

Adolescent↗

Factors influencing the occurrence of airway hyperreactivity in the general population: the importance of atopy and airway calibre.

The factors that determine the occurrence of airway hyperreactivity in the general population are not clearly understood. This study was designed to assess the independent effects of age, atopy, smoking and airway calibre. In a random sample of 2,415 adults aged 18-70 yrs we measured reactivity to methacholine as the dose provoking a 20% fall (PD20) in one-second forced expiratory volume (FEV1), atopy as the mean skin wheal response to three common environmental allergens, and airway calibre as the baseline FEV1 in absolute terms, as percent predicted (FEV1 % predicted) and as percent forced vital capacity (FEV1 % FVC). Hyperreactivity, defined as a PD20 < or = 12.25 mumol, was present in 314 (13%) of the sample, and before adjustment for FEV1 was more common in females (independent odds ratio (OR) = 2.05 (95% confidence interval 1.6-2.7)), current smokers (OR = 1.89 (1.3-2.6)), atopics (OR = 1.39 (1.3-1.5) per mm skin wheal), and in older age groups (OR for age 60-70 yrs relative to 18-29 yrs = 2.70 (1.7-4.3)). However, the odds of hyperreactivity were also strongly and independently related to absolute FEV1 (OR = 0.46 (0.27-0.77) per litre), FEV1 % predicted (OR = 0.96 (0.94-0.98) per percent), and FEV1 % FVC (OR = 0.92 (0.90-0.94) per percent; combined chi-square on 3 df = 312, p << 0.0001).(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗

Demographic and social characteristics of adults with cystic fibrosis in the United Kingdom.

OBJECTIVE: To obtain information about social and demographic characteristics and lifestyle of adult patients with cystic fibrosis, including those who do not attend major specialist clinics. DESIGN: Confidential self completion postal questionnaire to adult patients with cystic fibrosis, asking about social and demographic characteristics, social class and occupation, employment, education, insurance and social security benefits, symptom severity, and medical care. SETTING: National association for adults with cystic fibrosis. SUBJECTS: 1052 adult members of the Association of Cystic Fibrosis Adults UK, accounting for 68% of those with cystic fibrosis in the United Kingdom population over 16 years of age and over 80% of those over 25 in June 1990. RESULTS: The response rate was 82% (397 women, 423 men). Most adults with cystic fibrosis were found to be living fulfilling lives into adulthood. Significantly fewer men were married or cohabiting than women (110 (26%) men, 175 (44%) women). 420 (55%) responders were working, and of these 235 (56%) had less than two weeks' sick leave a year. Half of those not employed gave ill health as the reason. Revealing that they had cystic fibrosis at job interviews reduced likelihood of being employed for those with mild to moderate disease. People with cystic fibrosis had been less successful than the general population in achieving O level or equivalent qualifications, but more successful in achieving A level or higher qualifications. Achievement of any qualifications enhanced employment prospects irrespective of disease severity. CONCLUSION: Contrary to an image of chronic ill health and disability, a high proportion of adults with cystic fibrosis are living full and productive lives.

Adolescent↗

Efficacy and toxicity of fractionated stereotactic radiotherapy in the treatment of recurrent gliomas (phase I/II study).

Twenty-two patients with recurrent glioma have been treated on a dose escalation protocol with fractionated stereotactic external beam radiotherapy (SRT). All had previously received radical radiotherapy (median dose 55 Gy) as part of the initial treatment. The dose of SRT was increased from 30 Gy in six fractions to 50 Gy in ten fractions. Median survival from the date of SRT was 9.8 months. There was no significant acute morbidity but five patients who received > or = 40 Gy developed steroid responsive neurological deterioration assumed to represent late radiation damage. The survival and toxicity in patients with recurrent glioma are comparable with interstitial therapy. Fractionated SRT is a noninvasive form of localised radiation which may be a suitable alternative to interstitial therapy in this group of patients.

Adolescent↗

Hormonal treatment of pancreatic carcinoma: a phase II study of LHRH agonist goserelin plus hydrocortisone.

Eighteen consecutive patients with measurable locally advanced or metastatic pancreatic adenocarcinoma were treated with goserelin (Zoladex) 3.6 mg subcutaneously every 4 weeks. Hydrocortisone 20 milligrams twice daily was commenced with the second injection of goserelin. Objective tumour response was monitored by computerised tomography of the abdomen. There was no objective remission in disease sites. Serial measurements of serum tumour markers showed no reduction in serum CA 19-9 and CA 195 concentrations. The median duration of survival of all cases was 5 months. Administration of goserelin resulted in significant reductions in oestradiol, testosterone, androstenedione in males and reductions in FSH and LH in both males and females. The addition of hydrocortisone resulted in further reductions of androstenedione and testosterone levels in males. Thus goserelin showed no anti-tumour effect, but concentrations required for direct inhibitory effects may be higher than those required to produce effects on hormone suppression.

Adenocarcinoma↗

Can morbidity associated with untreated asthma in primary school children be reduced?: a controlled intervention study.

OBJECTIVE: To determine whether an intervention programme based on existing school and community resources can reduce school absence and improve participation in games lessons and sport in children with unrecognised or undertreated asthma. DESIGN: Parallel group controlled intervention study. SETTING: 102 primary schools in Nottingham: 49 were randomised to receive the intervention and 53 to be control schools. SUBJECTS: All children aged 5 to 10 years with parent reported absence from school because of wheezing in the previous year and taking no treatment or beta agonists only. INTERVENTIONS: Children with asthma were referred to their general practitioner for assessment of symptoms and treatment. Teachers were given education on asthma by the school nurse in 44 of the 49 intervention schools. MAIN OUTCOME MEASURES: Changes in school absence and missed games and swimming lessons because of wheezing, and schools' policy towards management of asthma in school. RESULTS: Of 17,432 children screened, 451 met the entry criteria--228 in intervention schools and 223 in control schools. 152 (67%) children in intervention schools visited their general practitioner, of whom 39 (26%) were given a new diagnosis of asthma and 58 (38%) had treatment for asthma increased or changed. Over the next academic year mean (SE) parent reported school absence due to wheezing fell significantly, but to a similar extent, in both intervention and control schools (0.82 (0.11) and 1.09 (0.21) weeks respectively). There was little change in school recorded absence or participation in games lessons and swimming lessons in either group. At the end of the study intervention schools were more likely to have improved aspects of management of asthma in school. CONCLUSION: The intervention resulted in a majority of children being assessed by their general practitioner and improved teachers' understanding and management of asthma, but it did not result in any appreciable reduction in morbidity.

Absenteeism↗

Intradiploic meningiomas. A radiological study of two cases confirmed histologically.

Approximately 1% of meningiomas arise in extradural sites. Intradiploic meningiomas form only a very small proportion of this number. They tend to occur in young patients. The CT and MRI appearances, although unusual, may be characteristic of the condition. We present two cases and describe the CT and MR appearance; the latter has not previously been described.

Adult↗

Neurosarcoidosis--demonstration of meningeal disease by gadolinium enhanced magnetic resonance imaging.

Arriving at a firm diagnosis of neurosarcoidosis continues to pose serious problems, particularly when evidence of granulomatous disease outside the nervous system is lacking. The commonest mode of presentation of neurosarcoidosis is with cranial nerve palsies. Two cases of presumed neurosarcoidosis with cranial nerve palsies showed clear evidence of focal meningeal disease on gadolinium-DTPA enhanced MRI brain scans. Although not specific for sarcoidosis, this technique may be very useful in aiding the diagnosis in suspected cases.

Aged↗

What causes cryptogenic fibrosing alveolitis? A case-control study of environmental exposure to dust.

OBJECTIVE: To investigate the role of occupational and domestic exposure to dust in the aetiology of cryptogenic fibrosing alveolitis. DESIGN: Matched case-control study. SUBJECTS: 40 Patients with cryptogenic fibrosing alveolitis and 106 community controls matched for age and sex who responded to a questionnaire. MAIN OUTCOME MEASURE: Responses to self administered questionnaire asking about lifetime exposure to dust, animals, and smoke at home and at work. RESULTS: The patients with cryptogenic fibrosing alveolitis were more likely to report occupational exposure to metal dust (matched odds ratio 10.97 (95% confidence interval 2.30 to 52.4), p less than 0.001) or wood dust (2.94 (0.87 to 9.90), p = 0.08), to have worked with cattle (10.89 (1.24 to 96.0), p = 0.01), and to have lived in a house heated by a wood fire (12.55 (1.04 to 114), p = 0.009). A history of smoking and social class based on occupation were not significantly related to disease state. CONCLUSION: Environmental exposure to dust may be an important factor in the aetiology of cryptogenic fibrosing alveolitis.

Aged↗