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Biomedical subjects

C Donnellan

Publications and source records attributed to C Donnellan.

6 recordsLinked to original sources
PubMed2006

Defining and quantifying coping strategies after stroke: a review.

The coping strategies that people use after a stroke may influence recovery. Coping measures are generally used to assess the mediating behaviour between a stressor (ie, disease or condition) and the physical or psychological outcome of an individual. This review evaluates measures that quantified coping strategies in studies on psychological adaptation to stroke. The main aspects of the coping measures reviewed were (a) conceptual basis; (b) coping domains assessed; (c) coping strategies used after a stroke; and (d) psychometric properties of coping measures used in studies assessing patients with stroke. Four databases (Medline, CINAHL, PsychINFO and Cochrane Systematic Reviews) were searched to identify studies that used a coping measure in stroke. 14 studies assessed coping strategies in patients after stroke. Ten different coping measures were used, and the studies reviewed had many limitations. Few studies provided definitions of "coping" and the psychometric properties of the coping measures were under-reported. The need for future studies to more clearly define the coping process and to present data on the reliability and validity of the measures used is emphasised.

Adaptation, Psychological↗
PubMed2005

Medical treatments for the maintenance therapy of reflux oesophagitis and endoscopic negative reflux disease.

BACKGROUND: Gastro-oesophageal reflux disease (GORD) - reflux of stomach contents +/- bile into the oesophagus causing symptoms such as heartburn and acid reflux - is a common relapsing and remitting disease which often requires long-term maintenance therapy. Patients with GORD may have oesophagitis (inflammation of the oesophagus) or a normal endoscopy (endoscopy negative reflux disease or ENRD). OBJECTIVES: To assess the effects of continuous maintenance therapy in adults with GORD (both ENRD and healed oesophagitis). SEARCH STRATEGY: We searched Cochrane Central Register of Controlled Trials (The Cochrane Library Issue 2, 2003), MEDLINE (1966 to 2003), EMBASE (1980 to 2003), CINAHL (1982-2003), and the National Research Register (Issue 2, 2003) and reference lists of articles. We also contacted manufacturers and researchers in the field. SELECTION CRITERIA: Randomised controlled studies comparing PPIs, H2RAs, prokinetics, sucralfate and combinations either in comparison to another treatment regimen or to placebo in adults with reflux oesophagitis and ENRD. DATA COLLECTION AND ANALYSIS: One author extracted data from included trials and a second author carried out an unblinded check. Two authors independently assessed trial quality. Study authors were contacted for additional information. MAIN RESULTS: Maintenance of patients with healed oesophagitis: For a healing dose of PPI (generally the standard dose given by the manufacturer) versus placebo, the relative risk (RR) for oesophagitis relapse was 0.26 (95% confidence interval (CI) 0.19 to 0.36); versus H2RAs the RR was 0.36 (95% CI 0.28 to 0.46) and versus maintenance PPIs the RR was 0.63 (95% CI 0.55 to 0.73). However overall adverse effects were also more common and headaches were more common when comparing healing PPIs to H2RAs. For a maintenance dose of PPI (half of the standard dose) versus placebo, the RR for oesophagitis relapse was 0.46 (95% CI 0.38 to 0.57) and versus H2RAs the RR was 0.57 (95% CI 0.47 to 0.69). Overall adverse effects were more common.H2RAs were of marginal help but beneficial for symptomatic relief. Prokinetics and sucralfate were also more effective than placebo. For ENRD patients: Limited data with one RCT showed benefit for omeprazole 10 mg once daily over placebo (RR 0.4; 95% CI 0.29 to 0.53). AUTHORS' CONCLUSIONS: The findings in this review support the long-term treatment of oesophagitis to prevent relapse, both endoscopically and symptomatically. Healing doses of PPIs are more effective than all other therapies, although there is an increase in overall adverse effects compared to placebo, and headache occurrence compared to H2RAs. H2RAs prevent relapse more effectively than placebo, demonstrating a role for PPI-intolerant patients. Prokinetics and sucralfate both show benefit over placebo, but the former is no longer licenced. There is only limited data for ENRD.

Adult↗
PubMed2004

A systematic review of symptomatic outcomes used in oesophagitis drug therapy trials.

Symptoms are an important outcome for measurement in clinical trials into gastro-oesophageal reflux disease, but the optimal approach to symptom assessment has not been formally evaluated. The authors conducted a systematic review to assess how reflux symptoms have been evaluated and how well these correlate with oesophagitis healing and relapse.

Clinical Trials as Topic↗
PubMed2002

Autonomic function in elderly patients with chronic heart failure.

AIMS: Autonomic function (AF) is attenuated by heart failure (HF). Reports have been based on studies of young patients with systolic heart failure (SHF). However, HF is a disease of older patients who are more likely to have diastolic heart failure (DHF). We investigated whether age alters AF in elderly HF patients and whether the haemodynamic type of HF influences AF. METHOD AND RESULTS: Thirty-six elderly HF (Framingham criteria) patients (11 with SHF, 25 with DHF) and 21 matched healthy subjects underwent simple bedside AF tests. Compared with the reference values for healthy adults, the mean E:I ratios and the median 30:15 ratios standing were all essentially normal. The median 30:15 ratios tilt and the mean Valsalva ratios were all significantly below the reference value (P for all cases <<0.050). Comparing three groups, there were no significant differences for mean E:I ratio (P=0.111), 30:15 tilt (P=0.619) and 30:15 standing (P=0.167), whereas there were significant differences for the mean Valsalva ratios (P=0.001). The mean Valsalva ratio of the SHF patients was significantly lower than that for the DHF patients (P<0.001) which in turn was significantly lower than the result of the healthy subjects (P<0.001). CONCLUSION: There is an age-related impairment in AF with further impairment occurring in patients with HF. However, the severity of autonomic dysfunction is less in patients with DHF compared with patients with SHF.

Aged↗
PubMed1998

Reproducibility and responsiveness of quality of life assessment and six minute walk test in elderly heart failure patients.

OBJECTIVE: To examine the reproducibility and responsiveness to change of a six minute walk test and a quality of life measure in elderly patients with heart failure. DESIGN: Longitudinal within patient study. SUBJECTS: 60 patients with heart failure (mean age 82 years) attending a geriatric outpatient clinic, 45 of whom underwent a repeat assessment three to eight weeks later. MAIN OUTCOME MEASURES: Subjects underwent a standardised six minute walk test and completed the chronic heart failure questionnaire (CHQ), a heart failure specific quality of life questionnaire. Intraclass correlation coefficients (ICC) were calculated using a random effects one way analysis of variance as a measure of reproducibility. Guyatt's responsiveness coefficient and effect sizes were calculated as measures of responsiveness to change. RESULTS: 24 patients reported no major change in cardiac status, while seven had deteriorated and 14 had improved between the two clinic visits. Reproducibility was satisfactory (ICC > 0.75) for the six minute walk test, for the total CHQ score, and for the dyspnoea, fatigue, and emotion domains of the CHQ. Effect sizes for all measures were large (> 0.8), and responsiveness coefficients were very satisfactory (> 0.7). Effect sizes for detecting deterioration were greater than those for detecting improvement. CONCLUSIONS: Quality of life assessment and a six minute walk test are reproducible and responsive measures of cardiac status in frail, very elderly patients with heart failure.

Aged↗