Aortic stenosis and mitral regurgitation as predictors of atrial fibrillation during 11 years of follow-up

<p>Abstract</p> <p>Background</p> <p>There is limited information about any association between the onset of atrial fibrillation (AF) and the presence of valvular disease.</p> <p>Methods</p> <p>We retrospectively examined 940 patients in sinus rhythm, examined by echocardiography in 1996. During 11 years of follow-up, we assessed the incidence of AF and outcome defined as valvular surgery or death, in relation to baseline valvular function. AS (aortic stenosis) severity at baseline examination was assessed using peak transaortic valve pressure gradient.</p> <p>Results</p> <p>In univariate analysis, the risk of developing AF was related to AS (significant AS versus no significant AS; hazard ratio (HR) 3.73, 95% confidence interval (CI) 2.39-5.61, p<0.0001) and mitral regurgitation (MR) (significant MR versus no significant MR; HR 2.52, 95% CI 1.77-3.51, p<0.0001). Also the risk of valvular surgery or death was related to AS (HR 3.90, 95% CI 3.09-4.88, p<0.0001) and MR (HR 2.07, 95% CI 1.67-2.53, p<0.0001). In multivariate analyses, adjusting for sex, age, other valvular abnormalities, left ventricular ejection fraction and left atrial size − AS was independently related to both endpoints, whereas MR was not independently related to either endpoint.</p> <p>Conclusions</p> <p>AS, but not MR, was independently predictive of development of AF and combined valvular surgery or death. In patients with combined AS and MR, the grade of AS, more than the grade of MR, determined the risk of AF and combination of valvular surgery or death. Further studies using contemporary echocardiographic quantification of aortic stenosis are warranted to confirm these retrospective data based on peak transaortic valve pressure gradient.</p

Predictors of changes in caregiving burden in people with schizophrenia: A 3-year follow-up study in a community mental health service

OBJECTIVE: The aims of this study were to measure changes over 3-years in caregiving burden and emotional distress in relatives of people with schizophrenia and to identify factors predicting the levels of caregiving burden. METHOD: A cohort of 51 caregivers of patients with schizophrenia attending the South-Verona Community Mental Health Service was assessed over 3-years with the Involvement Evaluation Questionnaire, European Version. Predictors of caregiving burden included both caregivers' and patients' characteristics and patterns of carer-patient interaction. RESULTS: Baseline levels of family burden were high in worrying and urging domains. Fifty-one per cent of caregivers experienced significant emotional distress. Both overall burden and emotional distress improved. Higher patients' psychopathology, higher numbers of patient-rated needs, patients' lower global functioning and patients' poorer quality of life were found to be related to the severity of family burden. The only significant predictor of caregivers' burden at follow-up was the baseline level of caregivers' burden itself. CONCLUSION: A policy addressing the caring burden of informal caregivers beyond patients' symptoms reduction should be considered

Effects of a daily school based physical activity intervention program on muscle development in prepubertal girls

This 12-month prospective controlled intervention evaluated the effect of a general school based physical activity program on muscle strength, physical performance and body composition in prepubertal girls. Fifty-three girls aged 7&ndash;9 years involved in a school based exercise program [40 min/day of general physical activity per school day (200 min/week)] were compared with 50 age-matched girls who participated in the general Swedish physical education curriculum (mean 60 min/week). Body composition (DXA), isokinetic peak torque (PT) of the knee extensors and flexors at 60 and 180&deg;/s, and vertical jump height (VJH) were assessed at baseline and 12 months. The annual gain in weight was similar between the groups, but there was a greater increase in total body and regional lean mass (P &lt; 0.05) and fat mass (P &lt; 0.01) in the exercise group. Mean gains in knee extensor PT at 60 and 180&deg;/s were 7.0&ndash;7.6% greater in the exercise group (P ranging &lt;0.05&ndash;&lt;0.001). No significant differences were detected in VJH. In conclusion, increasing school based physical education to at least 3 h/week provides a feasible strategy to enhance the development of muscle strength and lean mass in prepubertal girls.<br /