RESUMO
An increasing number of patients older than 65 years are referred for and have access to organ transplantation, and an increasing number of older adults are donating organs. Although short-term outcomes are similar in older versus younger transplant recipients, older donor or recipient age is associated with inferior long-term outcomes. However, age is often a proxy for other factors that might predict poor outcomes more strongly and better identify patients at risk for adverse events. Approaches to transplantation in older adults vary across programs, but despite recent gains in access and the increased use of marginal organs, older patients remain less likely than other groups to receive a transplant, and those who do are highly selected. Moreover, few studies have addressed geriatric issues in transplant patient selection or management, or the implications on health span and disability when patients age to late life with a transplanted organ. This paper summarizes a recent trans-disciplinary workshop held by ASP, in collaboration with NHLBI, NIA, NIAID, NIDDK and AGS, to address issues related to kidney, liver, lung, or heart transplantation in older adults and to propose a research agenda in these areas.
Assuntos
Transplante de Órgãos , Idoso , Alocação de Recursos para a Atenção à Saúde , Humanos , Imunossupressores/uso terapêutico , Seleção de Pacientes , Justiça Social , Doadores de Tecidos , Resultado do TratamentoRESUMO
In the setting of disparities in access to simultaneous pancreas and kidney transplantation (SPKT), Medicare coverage for this procedure was initiated July 1999. The impact of this change has not yet been studied. A national cohort of 22 190 type 1 diabetic candidates aged 18-55 for kidney transplantation (KT) alone or SPKT was analyzed. Before Medicare coverage, 57% of Caucasian, 36% of African American and 38% of Hispanic type 1 diabetics were registered for SPKT versus KT alone. After Medicare coverage, these proportions increased to 68%, 45% and 43%, respectively. The overall increase in SPKT registration rate was 27% (95% CI 1.16-1.38). As expected, the increase was more substantial in patients with Medicare primary insurance than those with private insurance (Relative Rate 1.18, 95% CI 1.09-1.28). However, racial disparities were unaffected by this policy change (African American vs. Caucasian: 0.97, 95% CI 0.87-1.09; Hispanic vs. Caucasian: 0.94, 95% CI 0.78-1.05). Even after Medicare coverage, African Americans and Hispanics had almost 30% lower SPKT registration rates than their Caucasian counterparts (95% CI 0.66-0.79 and 0.59-0.80, respectively). Medicare coverage for SPKT succeeded in increasing access for patients with Medicare, but did not affect the substantial racial disparities in access to this procedure.
Assuntos
Diabetes Mellitus Tipo 1/cirurgia , Acessibilidade aos Serviços de Saúde/economia , Disparidades em Assistência à Saúde/economia , Transplante de Rim , Medicare , Transplante de Pâncreas , Adulto , Negro ou Afro-Americano/estatística & dados numéricos , Hispânico ou Latino/estatística & dados numéricos , Humanos , Falência Renal Crônica/epidemiologia , Medicaid , Pessoa de Meia-Idade , Estados Unidos/epidemiologiaRESUMO
OBJECTIVE: Efforts to improve health care outcomes in the United States have led some organizations to recommend specific hospital settings or case volumes for complex medical diagnoses and procedures. But there are few studies of the effect of setting and volume on maternal outcomes, particularly in complicated conditions, such as diabetes. Our objective was to estimate the effect of hospital setting and volume on childbirth morbidity and length of stay in pregnancies complicated by type 2 and gestational diabetes. METHODS: We analyzed Maryland hospital discharge data during 1999-2004. The dependent variables were primary cesarean delivery, episiotomy, a composite variable for severe maternal morbidity, and hospital length of stay. The independent variables were hospital setting (community, non-teaching hospitals, community, teaching hospitals, and academic medical centers) and tertiles of annual hospital diabetes delivery volume. Multivariable regression analysis was used to assess the relation of hospital setting with each outcome, adjusting for hospital volume and maternal case mix. RESULTS: 5,507 deliveries with type 2 (15%) and gestational (85%) diabetes were analyzed. Primary cesarean delivery rates among women with any diabetes did not vary across settings. After adjustment for volume and patient case mix, the likelihood of severe maternal morbidity was higher among deliveries at academic centers compared to community, non-teaching hospitals (odds ratio [OR], 2.1; 95% confidence interval: 1.0, 4.2). Academic centers had a protective effect (OR, 0.3; 95% CI: 0.2, 0.7) and community teaching hospitals had a borderline protective effect (OR, 0.8; 95% CI: 0.7, 1.0) on episiotomy, compared to community, non-teaching hospitals. Length of stay was greater at academic centers and community, teaching hospitals compared to community, non-teaching hospitals (5.4 days, 3.5 days vs. 2.8 days, respectively). We did not identify an independent association between hospital diabetes volume and clinical outcomes after adjustment for case mix. CONCLUSIONS: Among women with type 2 and gestational diabetes, hospital setting is associated with a higher likelihood of severe maternal morbidity and length of stay, independent of volume. Patient case mix accounts for some of the variation across settings. The volume-outcome relationship found with other complex medical conditions or procedures was not found among diabetic pregnancies. Further investigations are needed to explain variations in outcomes across hospital settings and volumes.
Assuntos
Parto Obstétrico/estatística & dados numéricos , Diabetes Mellitus Tipo 2/epidemiologia , Diabetes Gestacional/epidemiologia , Tamanho das Instituições de Saúde/estatística & dados numéricos , Complicações do Trabalho de Parto/epidemiologia , Resultado da Gravidez/epidemiologia , Centros Médicos Acadêmicos/estatística & dados numéricos , Adulto , Causalidade , Cesárea/estatística & dados numéricos , Comorbidade , Intervalos de Confiança , Feminino , Hospitais Comunitários/estatística & dados numéricos , Hospitais de Ensino/estatística & dados numéricos , Humanos , Recém-Nascido , Tempo de Internação/estatística & dados numéricos , Maryland/epidemiologia , Razão de Chances , Gravidez , Estudos Retrospectivos , Fatores de Risco , Adulto JovemRESUMO
The effect of state legislation and federal policies supporting living donors on living kidney donation rates in the United States is unknown. We studied living kidney donation rates from 1988 to 2006, and we assessed changes in donation before and after the enactment of state legislation and the launch of federal initiatives supporting donors. During the study, 27 states enacted legislation. Among states enacting legislation, there was no statistically significant difference in the average rate of increase in overall living kidney donations after compared to before state legislation enactment (annual increase in donations per 1 000 000 population [95% confidence interval] 2.39 [1.94-2.84] compared to 1.68 [0.89-2.47] respectively, p > 0.05). Among states not enacting legislation, there was a statistically significantly greater annual increase in overall donation rates from 1997 to 2002 compared to before 1997 when federal initiatives commenced, but there was no growth in annual rates after 2002. State and federal legislation were associated with increases in living-unrelated donation. These findings suggest that although existing public policies were not associated with improvements in the majority of donations from living-related donors, they may have had a selective effect on barriers to living-unrelated kidney donation.
Assuntos
Transplante de Rim/legislação & jurisprudência , Transplante de Rim/estatística & dados numéricos , Doadores Vivos/legislação & jurisprudência , Doadores Vivos/estatística & dados numéricos , Feminino , Humanos , Masculino , Estados UnidosRESUMO
BACKGROUND: Atrial fibrillation (AF) carries a high risk of stroke and other thromboembolic events. Appropriate use of drugs to prevent thromboembolism in patients with AF involves comparing the patient's risk of stroke to the risk of hemorrhage from medication use. OBJECTIVES: To quantify risk of stroke, major hemorrhage and death from using medications that have been rigorously evaluated for prevention of thromboembolism in AF. SEARCH STRATEGY: Articles were identified through the Cochrane Collaboration's CENTRAL database and MEDLINE until December 1999. SELECTION CRITERIA: Included Randomized controlled trials of drugs to prevent thromboembolism in adults with non-postoperative AF. Excluded RCTS of patients with rheumatic valvular disease. DATA COLLECTION AND ANALYSIS: Data were abstracted by two reviewers. Odds ratios from all qualitatively similar studies were combined, with weighting by study size, to yield aggregate odds ratios for stroke, major hemorrhage, and death for each drug. MAIN RESULTS: Fourteen articles were included in this review. Warfarin was more efficacious than placebo for primary stroke prevention {aggregate odds ratio (OR) of stroke=0.30 [95% Confidence Interval (C.I.) 0.19,0.48]}, with moderate evidence of more major bleeding { OR= 1.90 [95% C.I. 0.89,4.04].}. Aspirin was inconclusively more efficacious than placebo for stroke prevention {OR=0.68 [95% C.I. 0.29,1.57]}, with inconclusive evidence regarding more major bleeds {OR=0.81[95% C.I. 0.37,1.78]}. For primary prevention, assuming a baseline risk of 45 strokes per 1000 patient-years, warfarin could prevent 30 strokes at the expense of only 6 additional major bleeds. Aspirin could prevent 17 strokes, without increasing major hemorrhage. In direct comparison, there was moderate evidence for fewer strokes among patients on warfarin than on aspirin {aggregate OR=0.64[95% C.I. 0.43,0.96]}, with only suggestive evidence for more major hemorrhage {OR =1.58 [95% C.I. 0.76,3.27]}. However, in younger patients, with a mean age of 65 years, the absolute reduction in stroke rate with warfarin compared to aspirin was low (5.5 per 1000 person-years) compared to an older group (15 per 1000 person-years). Low-dose warfarin or low-dose warfarin with aspirin was less efficacious for stroke prevention than adjusted-dose warfarin. AUTHORS' CONCLUSIONS: The evidence strongly supports warfarin in AF for patients at average or greater risk of stroke, although clearly there is a risk of hemorrhage. Although not definitively supported by the evidence, aspirin may prove to be useful for stroke prevention in sub-groups with a low risk of stroke, with less risk of hemorrhage than with warfarin. Further studies are needed of low- molecular weight heparin and aspirin in lower risk patients.
Assuntos
Anticoagulantes/uso terapêutico , Fibrilação Atrial/complicações , Flutter Atrial/complicações , Hemorragia/prevenção & controle , Inibidores da Agregação Plaquetária/uso terapêutico , Acidente Vascular Cerebral/prevenção & controle , Tromboembolia/prevenção & controle , Intervalos de Confiança , Hemorragia/etiologia , Humanos , Razão de Chances , Ensaios Clínicos Controlados Aleatórios como Assunto , Acidente Vascular Cerebral/etiologia , Tromboembolia/etiologiaRESUMO
Chronic kidney disease (CKD) is increasingly recognized as a global public health problem. There is now convincing evidence that CKD can be detected using simple laboratory tests, and that treatment can prevent or delay complications of decreased kidney function, slow the progression of kidney disease, and reduce the risk of cardiovascular disease (CVD). Translating these advances to simple and applicable public health measures must be adopted as a goal worldwide. Understanding the relationship between CKD and other chronic diseases is important to developing a public health policy to improve outcomes. The 2004 Kidney Disease Improving Global Outcomes (KDIGO) Controversies Conference on 'Definition and Classification of Chronic Kidney Disease' represented an important endorsement of the Kidney Disease Outcome Quality Initiative definition and classification of CKD by the international community. The 2006 KDIGO Controversies Conference on CKD was convened to consider six major topics: (1) CKD classification, (2) CKD screening and surveillance, (3) public policy for CKD, (4) CVD and CVD risk factors as risk factors for development and progression of CKD, (5) association of CKD with chronic infections, and (6) association of CKD with cancer. This report contains the recommendations from the meeting. It has been reviewed by the conference participants and approved as position statement by the KDIGO Board of Directors. KDIGO will work in collaboration with international and national public health organizations to facilitate implementation of these recommendations.
Assuntos
Saúde Global , Política de Saúde , Nefropatias , Doença Crônica , Progressão da Doença , Humanos , Nefropatias/classificação , Nefropatias/complicações , Nefropatias/diagnóstico , Nefropatias/terapia , Avaliação de Resultados em Cuidados de Saúde , Formulação de Políticas , Saúde Pública , Fatores de RiscoRESUMO
The influence of perceptions of organ allocation on willingness to donate organs is unclear. We performed a national study assessing the relation of public perceptions of organ allocation to willingness to donate organs, and we assessed the contribution of beliefs regarding discrimination in health care to observed associations. Among 845 participants, a majority (65%) reported that they less than "mostly" understand allocation, and most (71%) reported that they believe allocation is "unfair" or are "unsure" of its fairness. Participants reporting less understanding were less willing to donate (56%) than persons reporting greater understanding (67%) (p < 0.01). Participants believing allocation is "unfair" or who are "unsure" about fairness were less willing to donate (54%) than persons believing allocation is "fair" (68%) (p < 0.01). Associations were stronger among certain demographic subgroups. Participants with the least favorable perceptions of allocation were more likely than their counterparts to believe that race and income discrimination occur in transplantation and to believe that they personally experienced income discrimination in health care. Adjustment for these beliefs partially attenuated associations between perceptions regarding allocation and willingness to donate. Interventions enhancing transparency and perceived fairness of organ allocation may improve willingness to donate, particularly if they address concerns regarding discrimination in transplantation and health care.
Assuntos
Alocação de Recursos/ética , Doadores de Tecidos/estatística & dados numéricos , Atitude Frente a Saúde , Estudos Transversais , Alocação de Recursos para a Atenção à Saúde/ética , Humanos , Renda , Grupos Raciais , Fatores Socioeconômicos , Inquéritos e Questionários , Doadores de Tecidos/ética , Estados UnidosRESUMO
Attitudes toward monetary and nonmonetary incentives for living (LD) and deceased donation (DD) among the U.S. general public and different racial/ethnic and income groups have not been systematically studied. We studied attitudes via a telephone questionnaire administered to persons aged 18-75 in the continental United States. Among 845 participants (85% of randomized households), less than one-fifth participants were in favor of incentives for DD (range 7-17%). Most persons were in favor of reimbursement of medical costs (91%), paid leave (84%) and priority on the waiting list (59%) for LD. African Americans and Hispanics were more likely than Whites to be in favor of some incentives for DD. African Americans were more likely than Whites to be in favor of monetary incentives for LD. Whites with incomes less than $20 000 were more likely than Whites with greater incomes to be in favor of reimbursement for deceased donors' funeral expenses or medical expenses. The U.S. public is not generally supportive of incentives for DD, but is supportive of limited incentives for LD. Racial/ethnic minorities are more supportive than Whites of some incentives. Persons with low income may be more accepting of certain monetary incentives.
Assuntos
Atitude Frente a Saúde , Etnicidade , Doadores Vivos/psicologia , Grupos Raciais , Doadores de Tecidos/psicologia , Doadores de Tecidos/estatística & dados numéricos , Adulto , Idoso , Cadáver , Feminino , Humanos , Renda , Masculino , Pessoa de Meia-Idade , Motivação , Distribuição Aleatória , Fatores Socioeconômicos , Inquéritos e Questionários , Telefone , Estados UnidosRESUMO
BACKGROUND: The prevalence of immune thrombocytopenic purpura (ITP) in the USA is unknown. The paucity of data makes clinical trial design and resource allocation challenging. OBJECTIVES: We aimed to quantify the prevalence of ITP in one state and to report on utilization of resources. METHODS: The Maryland Health Care Commission supplied utilization data on all privately insured Maryland residents in 2002. We identified patients having two claims, separated by at least 30 days, for International Classification of Diseases, Ninth Revision, Clinical Modification code 287.3 (expected to be predominantly ITP). We excluded patients with concurrent diagnoses that made ITP unlikely. In sensitivity analyses, we varied the required visit interval between 14 and 180 days. We quantified ITP prevalence, resource utilization, and prevalence of concurrent autoimmune illnesses. RESULTS: The age-adjusted prevalence of ITP was 9.5 per 100,000 persons (10.5 per 100,000 when requiring a minimum 14-day interval and 4.5 per 100,000 with a 180-day interval). There was a predominance of males in childhood and of females in the middle-adult years, with an overall prevalence rate ratio of 1.9 for females to males. Twenty per cent of these patients were hospitalized, but emergency department use was rare, as was splenectomy. A concurrent diagnosis of multiple sclerosis was 25 times more prevalent than anticipated. CONCLUSIONS: We conclude that the prevalence of ITP in one populous state in the USA is comparable with that which has been reported in Europe. The suggested co-occurrence of ITP and multiple sclerosis in children merits further investigation.
Assuntos
Prontuários Médicos , Púrpura Trombocitopênica Idiopática/epidemiologia , Adolescente , Adulto , Fatores Etários , Criança , Pré-Escolar , Europa (Continente) , Feminino , Humanos , Lactente , Classificação Internacional de Doenças , Masculino , Maryland , Pessoa de Meia-Idade , Esclerose Múltipla/complicações , Esclerose Múltipla/epidemiologia , Prevalência , Púrpura Trombocitopênica Idiopática/complicações , Púrpura Trombocitopênica Idiopática/terapia , Fatores SexuaisRESUMO
Elevated bone mineral parameters have been associated with mortality in dialysis patients. There are conflicting data about calcium, parathyroid hormone (PTH), and mortality and few data about changes in bone mineral parameters over time. We conducted a prospective cohort study of 1007 incident hemodialysis and peritoneal dialysis patients. We examined longitudinal changes in bone mineral parameters and whether their associations with mortality were independent of time on dialysis, inflammation, and comorbidity. Serum calcium, phosphate, and calcium-phosphate product (CaP) increased in these patients between baseline and 6 months (P<0.001) and then remained stable. Serum PTH decreased over the first year (P<0.001). In Cox proportional hazards models adjusting for inflammation, comorbidity, and other confounders, the highest quartile of phosphate was associated with a hazard ratio (HR) of 1.57 (1.07-2.30) using both baseline and time-dependent values. The highest quartiles of calcium, CaP, and PTH were associated with mortality in time-dependent models but not in those using baseline values. The lowest quartile of PTH was associated with an HR of 0.65 (0.44-0.98) in the time-dependent model with 6-month lag analysis. We conclude that high levels of phosphate both at baseline and over follow-up are associated with mortality in incident dialysis patients. High levels of calcium, CaP, and PTH are associated with mortality immediately preceding an event. Promising new interventions need to be rigorously tested in clinical trials for their ability to achieve normalization of bone mineral parameters and reduce deaths of dialysis patients.
Assuntos
Cálcio/sangue , Falência Renal Crônica/sangue , Falência Renal Crônica/mortalidade , Hormônio Paratireóideo/sangue , Fosfatos/sangue , Adulto , Negro ou Afro-Americano/estatística & dados numéricos , Idoso , Densidade Óssea , Conservadores da Densidade Óssea/administração & dosagem , Calcitriol/administração & dosagem , Feminino , Humanos , Incidência , Falência Renal Crônica/terapia , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Diálise Renal/mortalidade , Fatores de Risco , Distribuição por SexoAssuntos
Ensaios Clínicos como Assunto , Conhecimentos, Atitudes e Prática em Saúde , Grupos Minoritários , Neoplasias/terapia , Seleção de Pacientes , Adolescente , Negro ou Afro-Americano , Idoso , Asiático , Hispânico ou Latino , Humanos , Indígenas Norte-Americanos , Havaiano Nativo ou Outro Ilhéu do Pacífico , Fatores Socioeconômicos , Estados UnidosRESUMO
BACKGROUND: Application of national guidelines regarding cardiovascular disease risk reduction to kidney dialysis patients is complicated by the conflicting observations that dialysis patients have a high risk of atherosclerotic cardiovascular disease (ASCVD), but dialysis patients with higher serum cholesterol have lower mortality rates. Actual treatment patterns of hyperlipidemia are not well studied. METHODS: We assessed the prevalence, treatment and control of hyperlipidemia in this high-risk patient population from 1995 - 1998. We measured low-density lipoprotein cholesterol, treatment with a lipid-lowering agent, and prevalence of hyperlipidemia as defined by the National Cholesterol Education Program (NCEP), Adult Treatment Panel (ATP) II guidelines in 812 incident hemodialysis (HD), and peritoneal dialysis (PD) patients from dialysis clinics in 19 states throughout the United States. RESULTS: Hyperlipidemia was present in 40% of HD and 62% of PD patients. Among subjects with hyperlipidemia, 67% of HD and 63% of PD patients were untreated and only 22% of HD and 14% of PD patients were treated and controlled. Those who entered the study in 1997 or 1998, those with diabetes, males and Caucasians were more likely to be treated and controlled, whereas subjects on PD and those with ASCVD were less likely to be treated and controlled. CONCLUSION: These data suggest that high rates of undertreatment exist in the United States ESRD dialysis population. Whether improved rates of treatment will result in decreased cardiovascular disease events needs to be tested in randomized clinical trials.
Assuntos
Hiperlipidemias/epidemiologia , Falência Renal Crônica/terapia , Terapia de Substituição Renal , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/prevenção & controle , Estudos de Coortes , Estudos Transversais , Feminino , Humanos , Hiperlipidemias/tratamento farmacológico , Hipolipemiantes/uso terapêutico , Falência Renal Crônica/complicações , Lipídeos/sangue , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Prevalência , Fatores de Risco , Estados Unidos/epidemiologiaAssuntos
Grupos Minoritários , Qualidade da Assistência à Saúde/organização & administração , Gestão da Qualidade Total/organização & administração , Competência Clínica/normas , Diversidade Cultural , Medicina Baseada em Evidências , Previsões , Custos de Cuidados de Saúde/estatística & dados numéricos , Pesquisa sobre Serviços de Saúde/organização & administração , Humanos , Capacitação em Serviço/organização & administração , Avaliação de Programas e Projetos de Saúde , Projetos de Pesquisa , Estados UnidosRESUMO
BACKGROUND: Few studies have simultaneously assessed the relative importance of sociodemographic, medical, and attitudinal factors in explaining which individuals are more likely to donate blood. STUDY DESIGN AND METHODS: A cross-sectional telephone survey of households in Maryland was conducted to identify the relation of sociodemographic, medical, and attitudinal factors to blood donation history among the general public. Random digit dialing was used to identify households; individuals aged 18 to 75 years were randomly selected within households. In multivariate analyses, the independent relationship of these factors with prior history of blood donation was assessed, and the amount of variation in prior history of blood donation among the study population that could be explained by these factors was determined. RESULTS: Of 385 participants (84% of randomized homes), 228 (59%) had donated blood at least once in the past. After adjusting for potential confounders, women, black participants, and those agreeing with the statement "I am afraid of hospitals" had 60 to 80 percent lower odds of prior donation when compared with men, white participants, and those who did not agree with the statement (OR [95% CI]: 0.2 [0.1-0.4], 0.4 [0.2-0.8], and 0.3 [0.2-0.6], respectively). The effect of fear of hospitals was consistent across sex and race. Trust, fear, and suspicion of hospitals were among factors contributing most to variation in prior donation history. CONCLUSION: Female sex, black race, and fear of hospitals are three major factors negatively associated with prior history of blood donation. Fear of hospitals affects blood donation patterns across race and sex groups. Future study is needed to determine whether recruitment of blood donors may be more efficient if focused toward women, minorities, and donors' fears of healthcare facilities or hospitals.
Assuntos
Doadores de Sangue/psicologia , Adolescente , Adulto , Idoso , Atitude Frente a Saúde , Comorbidade , Estudos Transversais , Coleta de Dados , Escolaridade , Medo , Feminino , Hospitalização/estatística & dados numéricos , Hospitais , Humanos , Renda , Cobertura do Seguro/estatística & dados numéricos , Masculino , Casamento , Maryland , Pessoa de Meia-Idade , Ocupações , Grupos Raciais , Distribuição Aleatória , Fatores Sexuais , Fatores SocioeconômicosRESUMO
Although coronary heart disease (CHD) is the leading cause of death and morbidity in older African Americans, relatively little is known about the incidence and predictors of CHD in this population. This study was undertaken to determine the incidence and predictors of CHD in African-American men and women aged 65 years and older. The participants in this study included a total of 924 African-American men and women aged 65 years of age and older who participated in the Cardiovascular Health Study (CHS). The overall CHD incidence was 26.6 per 1,000 person-years of risk. Rates were higher in men than women (35.3 vs. 21.6) and in those 75 years or older than in those less than 75 years (31.3 vs. 24.5). In multivariate analysis, factors associated with higher risk of incident disease were male gender [relative risk (RR) = 1.8, 95% confidence interval (CI) = 1.1, 2.7], diabetes mellitus (RR = 1.9, 95% CI = 1.2, 2.9), total cholesterol (RR for 40 mg/dL increment = 1.3, 95% CI = 1.0, 1.5), and low (i.e., <0.9) ankle-arm index (RR = 2.1, 95% CI = 1.3, 3.4) after adjusting for age. Within this cohort of older African Americans, male gender, diabetes mellitus, total cholesterol, and low ankle-arm index and were independently predictive of incident events. These results suggest that the ankle-arm index, a measure of advanced atherosclerosis, should be further evaluated for its efficacy in identifying older African Americans at risk for incident clinical events.
Assuntos
Negro ou Afro-Americano/estatística & dados numéricos , Doença das Coronárias/epidemiologia , Nível de Saúde , Distribuição por Idade , Idoso , Feminino , Humanos , Incidência , Masculino , Valor Preditivo dos TestesRESUMO
BACKGROUND: Surveillance of patients with Barrett esophagus (BE) is recommended to detect dysplasia and early cancer. In 1998, practice guidelines for the surveillance of patients with BE were developed under the auspices of the American College of Gastroenterology (ACG). Our objective is to assess physicians' awareness of agreement with and adherence to these guidelines. METHODS: A national prospective cohort study of practicing gastroenterologists who completed a self-administered questionnaire containing case studies prior to the release of the guidelines and another survey 18 months later. Analysis of adherence to the guidelines was done using the McNemar chi(2) test. RESULTS: Of the 154 gastroenterologists (66%) who responded to the follow-up survey, more than half (55%) were aware of the guidelines, and members of the ACG were more likely to know of their existence than nonmembers (61% vs 38%; P =.01). Overall, about 27% of physicians reported practicing in accordance with the guidelines at baseline; adherence increased modestly to 38% in the 18-month follow-up (P =.04) and was inversely related to fee-for-service reimbursement. Awareness was not associated with an increased likelihood of adherence, but agreement with the guidelines was strongly correlated with adherence (P<.001). The most frequent reasons for disagreement were concerns about liability, cancer risk, and inadequate evidence. CONCLUSIONS: Awareness of the guidelines published by the ACG was low. Guideline awareness did not predict adherence. Improvement in guideline adherence will require steps beyond mere dissemination and promotion. Addressing disagreements about liability, disease risk, and scientific evidence as well as restructuring payment incentives may help achieve optimal practice.
Assuntos
Esôfago de Barrett/diagnóstico , Esôfago de Barrett/terapia , Guias de Prática Clínica como Assunto , Adulto , Idoso , Atitude do Pessoal de Saúde , Conscientização , Estudos de Coortes , Feminino , Seguimentos , Fidelidade a Diretrizes , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Padrões de Prática Médica , Estudos Prospectivos , Inquéritos e QuestionáriosRESUMO
BACKGROUND: Atrial fibrillation (AF) carries a high risk of stroke and other thromboembolic events. Appropriate use of drugs to prevent thromboembolism in patients with AF involves comparing the patient's risk of stroke to the risk of hemorrhage from medication use. OBJECTIVES: To quantify risk of stroke, major hemorrhage and death from using medications that have been rigorously evaluated for prevention of thromboembolism in AF. SEARCH STRATEGY: Articles were identified through the Cochrane Collaboration's CENTRAL database and MEDLINE until December 1999. SELECTION CRITERIA: Included Randomized controlled trials of drugs to prevent thromboembolism in adults with non-postoperative AF. Excluded RCTS of patients with rheumatic valvular disease. DATA COLLECTION AND ANALYSIS: Data were abstracted by two reviewers. Odds ratios from all qualitatively similar studies were combined, with weighting by study size, to yield aggregate odds ratios for stroke, major hemorrhage, and death for each drug. MAIN RESULTS: Fourteen articles were included in this review. Warfarin was more efficacious than placebo for primary stroke prevention [aggregate odds ratio (OR) of stroke=0.30 [95% Confidence Interval (C.I.) 0.19,0.48]], with moderate evidence of more major bleeding [ OR= 1.90 [95% C.I. 0.89,4.04].]. Aspirin was inconclusively more efficacious than placebo for stroke prevention [OR=0.68 [95% C.I. 0.29,1.57]], with inconclusive evidence regarding more major bleeds [OR=0.81[95% C.I. 0.37,1.78]]. For primary prevention, assuming a baseline risk of 45 strokes per 1000 patient-years, warfarin could prevent 30 strokes at the expense of only 6 additional major bleeds. Aspirin could prevent 17 strokes, without increasing major hemorrhage. In direct comparison, there was moderate evidence for fewer strokes among patients on warfarin than on aspirin [aggregate OR=0.64[95% C.I. 0.43,0.96]], with only suggestive evidence for more major hemorrhage [OR =1.58 [95% C.I. 0.76,3.27]]. However, in younger patients, with a mean age of 65 years, the absolute reduction in stroke rate with warfarin compared to aspirin was low (5.5 per 1000 person-years) compared to an older group (15 per 1000 person-years). Low-dose warfarin or low-dose warfarin with aspirin was less efficacious for stroke prevention than adjusted-dose warfarin. REVIEWER'S CONCLUSIONS: The evidence strongly supports warfarin in AF for patients at average or greater risk of stroke, although clearly there is a risk of hemorrhage. Although not definitively supported by the evidence, aspirin may prove to be useful for stroke prevention in sub-groups with a low risk of stroke, with less risk of hemorrhage than with warfarin. Further studies are needed of low- molecular weight heparin and aspirin in lower risk patients.
Assuntos
Anticoagulantes/uso terapêutico , Fibrilação Atrial/complicações , Flutter Atrial/complicações , Hemorragia/prevenção & controle , Inibidores da Agregação Plaquetária/uso terapêutico , Acidente Vascular Cerebral/prevenção & controle , Tromboembolia/prevenção & controle , Intervalos de Confiança , Hemorragia/etiologia , Humanos , Razão de Chances , Ensaios Clínicos Controlados Aleatórios como Assunto , Acidente Vascular Cerebral/etiologia , Tromboembolia/etiologiaRESUMO
INTRODUCTION: While behavioral interventions may be viewed as important strategies to improve blood pressure (BP), an evidence-based review of studies evaluating these interventions may help to guide clinical practice. METHODS: We employed systematic review and meta-analysis of the literature (1970-1999) to assess the independent and additive effects of three behavioral interventions on BP control (counseling, self-monitoring of BP, and structured training courses). RESULTS: Of 232 articles assessing behavioral interventions, 15 (4072 subjects) evaluated the effectiveness of patient-centered counseling, patient self-monitoring of BP, and structured training courses. Pooled results revealed that counseling was favored over usual care (3.2 mmHg [95% CI, 1.2-5.3] improvement in diastolic blood pressure [DBP] and 11.1 mmHg [95% CI, 4.1-18.1] improvement in systolic blood pressure [SBP]) and training courses (10 mmHg improvement in DBP [95% CI, 4.8-15.6]). Counseling plus training was favored over counseling (4.7 mmHg improvement in SBP [95% CI, 1.2-8.2]) and afforded more subjects hypertension control (95% [95% CI, 87-99]) than those receiving counseling (51% [95% CI, 34-66]) or training alone (64% [95% CI, 48-77]). CONCLUSIONS: Evidence suggests that counseling offers BP improvement over usual care, and that adding structured training courses to counseling may further improve BP. However, there is not enough evidence to conclude whether self-monitoring of BP or training courses alone offer consistent improvement in BP over counseling or usual care. The magnitude of BP reduction offered by counseling indicates this may be an important adjunct to pharmacologic therapy.