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Biomedical subjects

F J Nye

Publications and source records attributed to F J Nye.

At least 19 recordsLinked to original sources

Clinical and diagnostic findings of an echovirus meningitis outbreak in the north west of England.

INTRODUCTION: An outbreak of echovirus meningitis occurred in the north west of England in 2001. This paper reviewed the clinical features and the role of different diagnostic methods. METHODS: This was a prospective study of adults admitted to a regional infectious disease unit with a probable diagnosis of meningitis, March to August 2001. RESULTS: Half the 40 cases were male; median age was 28 (range 16-51) years. Fifteen of 38 (39.5%) were smokers, and 20 of 24 (83.3%) had close contact with children. Median (range) duration of symptoms was 1.1 (0.25-7) days. Symptoms included headache (100%), photophobia (87.5%), and nausea (67.5%), and severity ranged from minimal signs to those consistent with a meningoencephalitis. The diagnosis was confirmed virologically in 29 of 40 (72%); echovirus 30 was isolated from six. Cerebrospinal fluid (CSF) enterovirus polymerase chain reaction (PCR) was positive in 26 of 32 (81%), and CSF virus culture in 3 of 16 (19%). Thirty one per cent of CSF samples had a neutrophil predominance, and 3 of 29 (10%) virologically confirmed cases had normal CSF microscopy and biochemistry. CONCLUSION: CSF microscopy may be normal or suggest bacterial meningitis in a substantial minority of cases of echovirus meningitis. CSF PCR for enterovirus seems to be more sensitive than virus culture of CSF, although PCR does not yield information on circulating virus type. Early and accurate diagnosis could reduce both use of parenteral antibiotics and length of hospital stay with both morbidity and cost implications. Close contact with children may be a risk factor, particularly if good hygiene measures are not practised.

Adolescent↗

Randomised controlled trial of patient education to encourage graded exercise in chronic fatigue syndrome.

OBJECTIVE: To assess the efficacy of an educational intervention explaining symptoms to encourage graded exercise in patients with chronic fatigue syndrome. DESIGN: Randomised controlled trial. SETTING: Chronic fatigue clinic and infectious diseases outpatient clinic. SUBJECTS: 148 consecutively referred patients fulfilling Oxford criteria for chronic fatigue syndrome. INTERVENTIONS: Patients randomised to the control group received standardised medical care. Patients randomised to intervention received two individual treatment sessions and two telephone follow up calls, supported by a comprehensive educational pack, describing the role of disrupted physiological regulation in fatigue symptoms and encouraging home based graded exercise. The minimum intervention group had no further treatment, but the telephone intervention group received an additional seven follow up calls and the maximum intervention group an additional seven face to face sessions over four months. MAIN OUTCOME MEASURE: A score of >/=25 or an increase of >/=10 on the SF-36 physical functioning subscale (range 10 to 30) 12 months after randomisation. RESULTS: 21 patients dropped out, mainly from the intervention groups. Intention to treat analysis showed 79 (69%) of patients in the intervention groups achieved a satisfactory outcome in physical functioning compared with two (6%) of controls, who received standardised medical care (P<0.0001). Similar improvements were observed in fatigue, sleep, disability, and mood. No significant differences were found between the three intervention groups. CONCLUSIONS: Treatment incorporating evidence based physiological explanations for symptoms was effective in encouraging self managed graded exercise. This resulted in substantial improvement compared with standardised medical care.

Adult↗

Clinical audit of ciprofloxacin use in adults admitted to hospital with gastroenteritis.

We audited the use of ciprofloxacin, before and after the introduction of simple clinical guidelines, in adults admitted to a regional infectious diseases unit with presumed gastroenteritis. The case notes of 128 consecutive adult admissions over 6 months in 1993 were reviewed and a comparable group of 125 adults in 1994 were prospectively followed. The discharge diagnosis was infective gastroenteritis in 73% of the 1993 admissions and 75% of the 1994 admissions, of whom 42% and 51% had confirmed bacterial enteropathogens. The 1994 cohort appeared to be more ill, with longer duration of symptoms prior to admission, more patients with profuse diarrhoea prior to admission, and longer mean duration of hospital stay. The proportion of patients with a discharge diagnosis of gastroenteritis who received ciprofloxacin did not change (64% in 1993, 67% in 1994) but the proportion of these patients who were subsequently found to be culture-positive rose from 54% to 68%. The proportion of patients receiving intravenous ciprofloxacin fell from 20% to 10% and the total number of doses (intravenous and oral) fell from 1027 in 1993 to 768 in 1994, with cost savings of pound 1465 over 6 months. The benefits and drawbacks of empirical use of ciprofloxacin are discussed. Our audit suggests that simple clinical guidelines can assist in identifying suitable patients for empirical antimicrobial therapy, and result in substantial cost savings.

Adult↗

The effects of indomethacin and naproxen on zidovudine pharmacokinetics.

The effects of indomethacin and naproxen on zidovudine (ZDV) pharmacokinetics were studied in six patients with the acquired immunodeficiency syndrome (AIDS), AIDS related complex (ARC) or asymptomatic HIV disease using a placebo-controlled crossover design. Indomethacin 25 mg twice daily or naproxen 250 mg twice daily did not alter ZDV pharmacokinetics compared with placebo. The mean AUC value for the glucuronidated metabolite, GZDV, was reduced from 26.6 +/- 11.7 mumol l-1 h in the presence of placebo to 20.9 +/- 8.3 mumol l-1 h (95% C.I. of the difference 1.39-9.98; P < 0.05) following treatment with naproxen 250 mg twice daily for 3 days. The small decrease in plasma GZDV in the naproxen phase reflects an increase in clearance of ZDV to other metabolites and/or a decrease in the formation clearance to GZDV and/or an increase in the clearance of GZDV. A decrease in formation clearance to GZDV would be consistent with the results of in vitro studies reported previously. No significant increase in ZDV concentration in the presence of naproxen may reflect a lower sensitivity of parent drug measurements to selective inhibition of parallel pathways of metabolism. The clinical significance of these findings is unknown but toxicity may be increased if a decreased formation of GZDV is accompanied by shunting of metabolism to 3'-amino-3'-deoxythymidine which is alleged to be cytotoxic.

Acquired Immunodeficiency Syndrome↗

The platelet count as a simple measure to distinguish inflammatory bowel disease from infective diarrhoea.

A total of 212 adult patients with infective diarrhoea and 27 with inflammatory bowel disease (IBD), admitted consecutively to an infectious disease unit, were studied in order to determine whether clinical features and laboratory measurements performed on admission identified cases of IBD. Long-standing diarrhoea, blood in the faeces, anaemia, leucocytosis, thrombocytosis, raised ESR and a reduced concentration of serum albumin were more common in patients with IBD (P less than 0.05). The most striking difference was in the platelet count with 59% patients with IBD and 1.6% patients with infective diarrhoea having platelet counts greater than 450 x 10(9)/l. A raised platelet count in a patient admitted to hospital with 'acute gastro-enteritis' suggests IBD.

Adult↗

Acute gastroenteritis: the need to remember alternative diagnoses.

Five hundred and ninety-four patients were consecutively admitted to an infectious disease unit over a 2-year period with a referral diagnosis of acute gastroenteritis or food poisoning. In 175 (29%) patients, gastrointestinal symptoms were associated with a condition other than gastrointestinal infection. Non-infective gastrointestinal disease was present in 90 patients, systemic infection in 50 and systemic disease in 35. Four illustrative case histories are presented to emphasize the need for a high index of suspicion if diseases such as malaria, septicaemia or appendicitis are not to be missed.

Acute Disease↗