Relationship between blood pressure measurements recorded on patients' charts in family physicians' offices and subsequent 24 hour ambulatory blood pressure monitoring

BACKGROUND: In most western countries 20% of adults have hypertension. Reports in the literature suggest that from 31 to 86% of treated patients are not at recommended target levels. However it is important to consider how we are determining whether targets are unmet and the degree to which they are unmet. Our underlying hypothesis is that white coat effect is partially responsible for the reported low rates of control of hypertension by primary care practitioners. METHODS: The study population consists of 1142 patients who are being assessed for enrolment in two community-based randomized controlled trials. Patients must have essential hypertension, be on antihypertensive medication, and must not have met their blood pressure targets. We are reporting on the proportion of patients who have not achieved target, and the degree to which they have not achieved their target. We also report on the mean daytime blood pressures on 24 hour ABPM and compare these to mean blood pressures found on the patients' charts. RESULTS: We identified 3284 patient charts of patients with hypertension. Of these, 1142 were determined to be "out of control" (did not achieve target) and 436 agreed to undergo 24 hour ABPM for final determination of eligibility. Overwhelmingly (95.8% of the time) it was the systolic blood pressure that was not under control. However, most of the patients who had not achieved target according to our criteria were within 10 mmHg of the recommended targets. Isolated systolic blood pressure was the best predictor of elevated mean daytime blood pressure on 24 hour ABPM. CONCLUSIONS: At least 35% of patients had not achieved target blood pressure levels and this is primarily due to lack of control of systolic blood pressure. The best predictor of continuing hypertension on 24 hour ABPM was the mean systolic blood pressure on the patients chart. However, only 69% of patients who were uncontrolled according blood pressures recorded in the chart were uncontrolled according to 24 hour ABPM criteria. This suggests that the white coat effect makes blood pressure measurements in the doctor's offices, at least as currently done, not sufficiently accurate for determining treatment endpoint

Cognitive function, social integration and mortality in a U.S. national cohort study of older adults

<p>Abstract</p> <p>Background</p> <p>Prior research suggests an interaction between social networks and Alzheimer's disease pathology and cognitive function, all predictors of survival in the elderly. We test the hypotheses that both social integration and cognitive function are independently associated with subsequent mortality and there is an interaction between social integration and cognitive function as related to mortality in a national cohort of older persons.</p> <p>Methods</p> <p>Data were analyzed from a longitudinal follow-up study of 5,908 American men and women aged 60 years and over examined in 1988–1994 followed an average 8.5 yr. Measurements at baseline included self-reported social integration, socio-demographics, health, body mass index, C-reactive protein and a short index of cognitive function (SICF).</p> <p>Results</p> <p>Death during follow-up occurred in 2,431. In bivariate analyses indicators of greater social integration were associated with higher cognitive function. Among persons with SICF score of 17, 22% died compared to 54% of those with SICF score of 0–11 (p < 0.0001). After adjusting for confounding by baseline socio-demographics and health status, the hazards ratio (HR) (95% confidence limits) for low SICF score was 1.43 (1.13–1.80, p < 0.001). After controlling for health behaviors, blood pressure and body mass, C-reactive protein and social integration, the HR was 1.36 (1.06–1.76, p = 0.02). Further low compared to high social integration was also independently associated with increased risk of mortality: HR 1.24 (1.02–1.52, p = 0.02).</p> <p>Conclusion</p> <p>In a cohort of older Americans, analyses demonstrated a higher risk of death independent of confounders among those with low cognitive function and low social integration with no significant interaction between them.</p

Estimated pre-morbid IQ effects on cognitive and functional outcomes in Alzheimer disease: a longitudinal study in a treated cohort

Abstract Background Cognitive reserve is thought to influence the degree of neuropathology needed for diagnosis of Alzheimer disease (AD). Cognitive reserve can be operationally defined as the hypothesized capacity of the mature adult brain to sustain the effects of disease or injury without manifesting clinical symptoms of AD, but sufficient to cause clinical dementia in an individual possessing less cognitive reserve. Its effect on the subsequent course of AD is less clear. Pre-morbid IQ is a useful measure of cognitive reserve. Methods We studied 659 consecutive patients with AD at a tertiary referral memory clinic. Patients were assessed on six cognitive tests at baseline. Activities of Daily Living (ADL) were measured on the Instrumental Activities of Daily Living (IADL) scale and Physical Self-Maintenance Scale (PSMS). The National Adult Reading Test (NART) was used to estimate pre-morbid IQ. Patients were followed up after starting a cholinesterase inhibitor over 78 weeks. Mixed general linear models estimated the effects of NART on cognition and ADL. Results Three hundred and fifty-five patients had NART scored with a mean estimated pre-morbid IQ of 104.7 (standard deviation 18.5). NART increased overall cognitive ability by 2.7% for every 10 IQ points (p Conclusion Our data support the hypothesis that cognitive reserve continues to have a limited influence on cognition after AD has been diagnosed and thus, indirectly, has an impact on ADL.</p

Perfil dos idosos que sofreram trauma em Londrina - Paraná Perfil de los ancianos que sufrieron traumas en Londrina - Paraná Profile of elderly patients who suffered trauma im Londrina - Paraná

O objetivo foi caracterizar os idosos que sofreram trauma e foram internados nos três hospitais terciários, da cidade de Londrina - Paraná. Pesquisa quantitativa através de um estudo observacional, transversal, com 121 idosos de 60 a 74 anos e seus cuidadores, realizada durante um período de seis meses, por meio de entrevistas e visita domiciliar. Os resultados evidenciaram que a maioria dos idosos era do sexo masculino, com média de idade de 67,7 anos. Os traumas sofridos foram: 62,0% quedas, 25,6% acidentes de transporte e 10,4% outras causas. Como conseqüência ao trauma houveram de uma a três lesões, e 11 idosos (9,1%), foram a óbito. A queda foi a principal causa de trauma, a qual pode ser evitada observando os fatores intrínsecos e os extrínsecos que a predispõem, com o intuito de estabelecer estratégias de prevenção desse tipo de trauma.<br>El objetivo fue caracterizar a los ancianos que sufrieron traumas y fueron internados en los tres hospitales terciarios, de la ciudad de Londrina, Paraná. Investigación cuantitativa a través de un estudio observacional, transversal, realizado en 121 ancianos de 60 a 74 años y sus cuidadores, realizada durante un período de seis meses, por medio de entrevistas y visitas a domicilio. Los resultados colocaron en evidencia que la mayoría de los ancianos era de sexo masculino, con promedio de edad de 67,7 años. Los traumas sufridos fueron: 62,0% caídas, 25,6% accidentes de transporte y 10,4% otras causas. Como consecuencia del trauma tuvieron de una a tres lesiones y 11 ancianos (9,1%), murieron. La caída fue la principal causa del trauma, la cual puede ser evitada observando los factores intrínsecos y los extrínsecos que la predisponen, con la finalidad de establecer estrategias de prevención para este tipo de trauma.<br>The objective of this study is to characterize elderly victims of traumas admitted to three tertiary hospitals in Londrina, Paraná State. This quantitative-based research lasted six months and was carried out by means of an observational and cross-sectional study of 121 elderly people (60 to 74 years old) and their caregivers at the patients' homes, by the use of interviews. Results indicated that the majority of the elderly patients were males, with average age of 67.7 years. The suffered traumas were distributed as follows: 62.0% by falls; 25.6% by transport accidents; and 10.4% by other sources. As a consequence of the trauma, the elderly patient had from one to three injuries and 11 (9.1%) died. Falls were the major source of traumas. This event can be avoided by the observations of predisposing intrinsic and extrinsic factors, aiming at establishing prevention strategies to this type of trauma