RESUMO
BACKGROUND: Clinical decision aids may support shared decision-making for screening mammography. To inform shared decision-making between patients and their providers, this study examines how patterns of using an EHR-integrated decision aid and accompanying verbal patient-provider communication predict decision-making satisfaction. METHODS: For 51 patient visits during which a mammography decision aid was used, linguistic characteristics of patient-provider verbal communication were extracted from transcribed audio recordings and system logs automatically captured uses of the decision aid. Surveys assessed patients' post-visit decisional satisfaction and its subcomponents. Linear mixed effects models assessed how patients' satisfaction with decision making was related to patterns of verbal communication and navigation of the decision aid. RESULTS: The results indicate that providers' use of quantitative language during the encounter was positively associated with patients' overall satisfaction, feeling informed, and values clarity. Patients' question-asking was negatively associated with overall satisfaction, values clarity, and certainty perception. Where system use data indicated the dyad had cycled through the decision-making process more than once ("looping" back through pages of the decision aid), patients reported improved satisfaction with shared decision making and all subcomponents. Overall satisfaction, perceived support, certainty, and perceived effectiveness of decision-making were lowest when a high number of navigating clicks occurred absent "looping." CONCLUSIONS: Linguistic features of patient-provider communication and system use data of a decision aid predict patients' satisfaction with shared decision making. Our findings have implications for the design of decision aid tools and clinician training to support more effective shared decision-making for screening mammography.
Assuntos
Neoplasias da Mama , Sistemas de Apoio a Decisões Clínicas , Humanos , Feminino , Mamografia , Detecção Precoce de Câncer , Satisfação do Paciente , Neoplasias da Mama/diagnóstico por imagem , ComunicaçãoRESUMO
Background: Patient decision aids (PDAs) facilitate shared decision-making (SDM) and are delivered in a variety of formats, including printed material or instructional videos, and, more recently, web-based tools. Barriers such as time constraints and disruption to clinical workflow are reported to impede usage in routine practice. Introduction: This pragmatic study examines use of PDAs integrated (iPDAs) into the electronic health record (EHR) over an 8-year period. Methods: A suite of iPDAs that personalize decision-making was integrated into an academic health system EHR. Clinician use was tracked using patient and clinician encrypted information, enabling identification of clinician types and unique uses for an 8-year period. Clinician feedback was obtained through survey. Results: Over 8 years, 1,209 identifiable clinicians used the iPDAs at least once ("aware"). Use increased over time, with 2,415 unique uses in 2010, and 23,456 in 2017. Clinicians who used an iPDA with at least 5 patients ("adopters"), increased by 82 clinicians each year (range 56-108); of clinicians who used the tool once, 54.3% became adopters. Of 261 primary care clinicians, 93.5% were aware, 86.2% were adopters, and 80.5% used the tools in the last 90 days. Clinicians perceived the iPDAs to be convenient, efficient, and encouraging of SDM. Discussion: We demonstrate that use of decision aids integrated into the EHR result in repeated use among clinicians over time and have the potential to overcome barriers to implementation. We noted a high degree of clinician satisfaction, without a sense of increase in visit time. Conclusion: Integration of PDAs into the EHR results in sustained use. Further research is needed to assess the impact of iPDAs on decisional quality.
Assuntos
Técnicas de Apoio para a Decisão , Registros Eletrônicos de Saúde , Tomada de Decisões , Humanos , Participação do Paciente , Atenção Primária à Saúde , Fluxo de TrabalhoRESUMO
Congestive heart failure (CHF) is an important source of morbidity and mortality in end-stage renal disease patients. Although CHF is commonly associated with low cardiac output (CO), it may also occur in high CO states. Multiple conditions are associated with increased CO including congenital or acquired arteriovenous fistulae or arteriovenous grafts. Increased CO resulting from permanent AV access in dialysis patients has been shown to induce structural and functional cardiac changes, including the development of eccentric left ventricle hypertrophy. Often, the diagnosis of high output heart failure requires invasive right heart monitoring in the acute care setting such as a medical or cardiac intensive care unit. The diagnosis of an arteriovenous access causing high output heart failure is usually confirmed after the access is ligated surgically. We present for the first time, a case for real-time hemodynamic assessment of high output heart failure due to AV access by interventional nephrology in the cardiac catheterization suite.
Assuntos
Derivação Arteriovenosa Cirúrgica/efeitos adversos , Débito Cardíaco Elevado/diagnóstico , Débito Cardíaco Elevado/etiologia , Insuficiência Cardíaca/diagnóstico , Falência Renal Crônica/terapia , Diálise Renal , Idoso , Feminino , Insuficiência Cardíaca/etiologia , Humanos , Falência Renal Crônica/complicações , MasculinoRESUMO
BACKGROUND: Intraosseous access has been used increasingly with proven efficacy in emergent situations for adults when intravenous access could not be obtained. OBJECTIVE: Our aim was to demonstrate if tibial intraosseous (IO) is an effective route for iodinated contrast administration and pulmonary vasculature visualization. CASE REPORT: We report on an obtunded patient requiring a computed tomography angiogram to help with diagnosis and tibial IO was the only viable access appropriate to withstand the pressure of a computed tomography iodinated contrast load. Tibial IO access was used successfully for administration of iodinated contrast to evaluate for massive pulmonary embolism in an obtunded patient in extremis secondary to cardiovascular instability. CONCLUSIONS: The pulmonary arteries were opacified and demonstrated a high-quality CT angiogram can be done via tibial IO device.
Assuntos
Angiografia/métodos , Infusões Intraósseas/métodos , Embolia Pulmonar/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Meios de Contraste/administração & dosagem , Humanos , Iodo/administração & dosagem , Masculino , Pessoa de Meia-Idade , TíbiaRESUMO
BACKGROUND: Up to 83% of patients with SLE stop taking hydroxychloroquine (HCQ) within the first year due to knowledge gaps regarding the survival benefits of HCQ versus inflated fears of rare toxicity. Thus, there is a need for a shared decision-making tool that highlights HCQ's significant benefits versus rare harms to improve patients' understanding and align treatments with their values. The objective of this study was to describe development and piloting of a decision aid (HCQ-SAFE) to facilitate HCQ adherence, and safe, effective use by engaging patients in therapeutic decision-making. METHODS: HCQ-SAFE was developed via a collaborative process involving patients, clinicians, implementation scientists and health literacy experts. The initial prototype was informed by Agency for Healthcare Research and Quality (AHRQ) low literacy principles and key themes about HCQ use from six prior patient and clinician focus groups, with iterative expert and stakeholder feedback to deliver a final prototype. We implemented HCQ-SAFE in four clinics to examine usability and feasibility on Likert scales (0-7) and net promoter score (0%-100%). RESULTS: The final HCQ-SAFE shared decision-making laminated tool organises data using pictograms showing how HCQ use reduces risk of organ damage, early death and blood clots versus low risk of eye toxicity.HCQ-SAFE was reviewed in all eligible patient visits (n=40) across four clinics on an average of ~8 min, including 25% non-English-speaking patients. All patients scored 100% on the knowledge post-test; no decisional conflicts were noted after using HCQ-SAFE. HCQ-SAFE garnered high clinician and patient satisfaction with 100% likelihood to recommend to peers. CONCLUSIONS: HCQ-SAFE is a stakeholder-informed feasible shared decision-making tool that enhances communication and can potentially improve knowledge, clarify misbeliefs and engage patients in treatment decisions, including those with limited English proficiency.
Assuntos
Letramento em Saúde , Lúpus Eritematoso Sistêmico , Estados Unidos , Humanos , Hidroxicloroquina/efeitos adversos , Lúpus Eritematoso Sistêmico/tratamento farmacológico , Técnicas de Apoio para a DecisãoRESUMO
PURPOSE: Implementing shared decision making (SDM), recommended in screening mammography by national guidelines for women age 40-49 years, faces challenges that innovations in quality improvement and team science (TS) are poised to address. We aimed to improve the effectiveness, patient-centeredness, and efficiency of SDM in primary care for breast cancer screening. METHODS: Our interdisciplinary team included primary and specialty care, psychology, epidemiology, communication science, engineering, and stakeholders (patients and clinicians). Over a 6-year period, we executed two iterative cycles of plan-do-study-act (PDSA) to develop, revise, and implement a SDM tool using TS principles. Patient and physician surveys and retrospective analysis of tool performance informed our first PDSA cycle. Patient and physician surveys, toolkit use, and clinical outcomes in the second PDSA cycle supported SDM implementation. We gathered team member assessments on the importance of individual TS activities. RESULTS: Our first PDSA cycle successfully generated a SDM tool called Breast Cancer Risk Estimator, deemed valuable by 87% of patients surveyed. Our second PDSA cycle increased Breast Cancer Risk Estimator utilization, from 2,000 sessions in 2017 to 4,097 sessions in 2019 while maintaining early-stage breast cancer diagnoses. Although TS activities such as culture, trust, and communication needed to be sustained throughout the project, shared goals, research/data infrastructure support, and leadership were more important earlier in the project and persisted in the later stages of the project. CONCLUSION: Combining rigorous quality improvement and TS principles can support the complex, interdependent, and interdisciplinary activities necessary to improve cancer care delivery exemplified by our implementation of a breast cancer screening SDM tool.
Assuntos
Neoplasias da Mama , Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/psicologia , Tomada de Decisão Compartilhada , Tomada de Decisões , Pesquisa Interdisciplinar , Melhoria de Qualidade , Estudos Retrospectivos , Mamografia , Detecção Precoce de CâncerRESUMO
Portopulmonary hypertension (PoPH) refers to pulmonary arterial hypertension associated with portal hypertension with or without evidence of an underlying liver disease. Despite the potential for curing PoPH with liver transplantation, the presence of moderate or severe PoPH is associated with increased morbidity and mortality and is, therefore, a contraindication to transplantation. Previous studies have predominantly used intravenous epoprostenol for treatment in order to qualify patients for liver transplantation. In this retrospective case series, we describe the clinical course of 11 patients whom we successfully treated (predominantly with oral sildenafil and subcutaneous treprostinil) in order to qualify them for liver transplantation. The mean pulmonary artery pressure significantly improved from 44 to 32.9 mm Hg, and the pulmonary vascular resistance decreased from 431 to 173 dyn second cm(-5) . There were significant improvements in the cardiac output and the transpulmonary gradient with these therapies as well. All 11 patients subsequently received liver transplants with a 0% mortality rate to date; the duration of follow-up ranged from 7 to 60 months. After transplantation, 7 of the 11 patients (64%) were off all pulmonary vasodilators, and only 2 patients required transiently increased doses of prostacyclins. In conclusion, an aggressive approach to the treatment of PoPH with sildenafil and/or treprostinil and subsequent liver transplantation may be curative for PoPH in some patients.
Assuntos
Epoprostenol/análogos & derivados , Hipertensão Portal/tratamento farmacológico , Falência Hepática/cirurgia , Transplante de Fígado , Piperazinas/administração & dosagem , Circulação Pulmonar/efeitos dos fármacos , Sulfonas/administração & dosagem , Adulto , Anti-Hipertensivos/administração & dosagem , Epoprostenol/administração & dosagem , Feminino , Seguimentos , Humanos , Hipertensão Portal/complicações , Tempo de Internação , Falência Hepática/complicações , Masculino , Pessoa de Meia-Idade , Inibidores da Fosfodiesterase 5/administração & dosagem , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/prevenção & controle , Purinas/administração & dosagem , Estudos Retrospectivos , Índice de Gravidade de Doença , Citrato de SildenafilaRESUMO
A quadricuspid aortic valve is rare and often incidentally found by echocardiography, surgically, or on post mortem examination. Aortic regurgitation is common and if severe enough can lead to symptoms of dyspnea. We report a case of a quadricuspid aortic valve, which was found by cardiac multidetector computed tomography during a pre-operative assessment for severe aortic regurgitation.
Assuntos
Insuficiência da Valva Aórtica/diagnóstico por imagem , Insuficiência da Valva Aórtica/etiologia , Valva Aórtica/anormalidades , Anormalidades Cardiovasculares/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Adulto , Valva Aórtica/diagnóstico por imagem , Valva Aórtica/cirurgia , Insuficiência da Valva Aórtica/cirurgia , Anormalidades Cardiovasculares/cirurgia , Ecocardiografia , Feminino , HumanosRESUMO
BACKGROUND: Updated guidelines from the National Cholesterol Education Program Adult Treatment Panel III stratify patients into 5 groups of coronary heart disease (CHD) risk that determine intensity of lipid-lowering therapy. The present study assesses the distribution of low-density lipoprotein cholesterol (LDL-C) in the United States across the 5 groups of CHD risk as defined in the updated guidelines. METHODS AND RESULTS: Subjects included 7399 individuals 20 to 79 years of age in the 1999 to 2002 National Health and Nutrition Examination Survey representing 171 million individuals in the United States. CHD risk, LDL-C levels, and goal achievement were determined per Adult Treatment Panel III guidelines. CHD risk assessment incorporated a medical condition review, risk factor summation, and Framingham Risk Score calculation. Percentages were weighted to represent population estimates, and SEs were adjusted for the survey design. The distribution of individuals by CHD risk included 61.1% at lower risk, 10.6% at high risk, and 5.7% at very high risk. From Adult Treatment Panel III criteria, only 5.4% of the population was at "intermediate" risk. Two thirds (66.3%) met their Adult Treatment Panel III-defined LDL-C goal. Of those at high and very high risk, 23% and 26%, respectively, met the goal of LDL-C <100 mg/dL, whereas only 3.1% and 4.6% had an LDL-C <70 mg/dL (or non-high-density lipoprotein C <100 mg/dL). CONCLUSIONS: Most adult US residents are at lower 10-year CHD risk and meet risk-adjusted LDL-C goals. However, large portions of the high-risk population are undertreated. The commonly described population at intermediate risk is small. A novel method of identifying patients who might benefit from additional testing to determine their treatment strategy is provided.
Assuntos
LDL-Colesterol/sangue , Doença das Coronárias/sangue , Doença das Coronárias/epidemiologia , Dislipidemias/sangue , Dislipidemias/epidemiologia , Adulto , Idoso , Dislipidemias/diagnóstico , Dislipidemias/terapia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos Nutricionais , Guias de Prática Clínica como Assunto , Valor Preditivo dos Testes , Prevalência , Fatores de Risco , Estados Unidos/epidemiologiaRESUMO
BACKGROUND: This study sought to evaluate national levels of elevated low-density lipoprotein cholesterol (LDL-C) before and after publication of the Adult Treatment Panel III (ATP III). The ATP III guidelines intensified LDL-C targets and defined additional high-risk conditions. These recommendations are expected to have a noticeable impact on US cholesterol levels. METHODS: Coronary heart disease (CHD) risk was determined per ATP III guidelines for US residents aged 20 to 79 years in the 1999 to 2000 and 2001 to 2002 surveys. For those at high risk, the LDL-C mean percentage <100 mg/dL and percentage > or =130 mg/dL, although not taking lipid-lowering therapy, were compared between the 2 surveys. In addition, subsets with and without CHD were evaluated. RESULTS: Of all high-risk US residents, the mean LDL-C dropped from 129 mg/dL in 1999 to 2000 to 120 mg/dL in 2001 to 2002 (P = .003). Those <100 mg/dL increased from 23% to 32% (P = .003). Those > or =130 mg/dL and not on medication dropped from 36% to 27% (P = .001). Goal achievement and improvements were more favorable in the subset with CHD compared with those at high risk due to high-risk equivalent conditions. CONCLUSIONS: The sharp increase in high-risk US residents at the goal and the drop in the untreated percentage of those above treatment threshold illustrate national improvements in the management of LDL-C for those at high coronary risk. High-risk subjects without CHD displayed less significant improvements, suggesting an opportunity for better recognition and management of these individuals.
Assuntos
LDL-Colesterol/sangue , Hipercolesterolemia/epidemiologia , Guias de Prática Clínica como Assunto , Adulto , Anticolesterolemiantes/uso terapêutico , Doença das Coronárias , Feminino , Fidelidade a Diretrizes , Humanos , Hipercolesterolemia/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Inquéritos Nutricionais , Risco , Estados Unidos/epidemiologiaRESUMO
C-reactive protein (CRP) is the most well-studied inflammatory marker for the prediction of coronary artery disease. It was hypothesized that population-wide screening would have minimal impact but that a target population might be identified for whom CRP testing could be appropriate. The National Health and Nutrition Examination Survey (NHANES; 1999 to 2002) included 7,399 subjects who represented 171 million United States residents aged 20 to 79 years. Subjects were risk stratified according to National Cholesterol Education Program Adult Treatment Panel III guidelines. Subjects with CRP levels >3 mg/L then had their risk profiles adjusted by adding 1 risk factor and multiplying their Framingham risk scores by 1.5. Subjects had their low-density lipoprotein (LDL) cholesterol goals adjusted as necessary and were then recategorized as above or below their CRP-adjusted LDL cholesterol goal. LDL cholesterol goals were met initially by 67.8% (116 +/- 8 million) of United States residents, and 64.8% (111 +/- 8 million) achieved their LDL cholesterol goals after CRP adjustment. Thus, 5.3 +/- 1.1 million of the population (3.1 +/- 0.1%) had their risk modified in a clinically meaningful way by CRP adjustment. Targeting the screening to 2 groups, those with 1 risk factor and LDL cholesterol levels 130 to 159 mg/dl and those with moderately high risk and LDL cholesterol levels 100 to 129 mg/dl, we were able to identify all 5.3 million by screening only 14.8 million, achieving a screening yield of 35%. In conclusion, population-based screening with CRP provided a clinical impact for only 3.1% of United States residents. Patients with 1 risk factor and LDL cholesterol levels of 130 to 159 mg/dl and those with moderately high risk and LDL cholesterol levels of 100 to 129 mg/dl represent high-yield subgroups for routine CRP screening.
Assuntos
Proteína C-Reativa/análise , LDL-Colesterol/sangue , Doença da Artéria Coronariana/prevenção & controle , Programas de Rastreamento , Adulto , Idoso , Algoritmos , Biomarcadores , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos Nutricionais , Valor Preditivo dos Testes , Medição de Risco , Fatores de Risco , Estados UnidosRESUMO
OBJECTIVE: Inadequate right ventricular (RV) and pulmonary arterial (PA) functional responses to exercise are important yet poorly understood features of pulmonary arterial hypertension (PAH). This study combined invasive catheterisation with echocardiography to assess RV afterload, RV function and ventricular-vascular coupling in subjects with PAH. METHODS: Twenty-six subjects with PAH were prospectively recruited to undergo right heart catheterisation and Doppler echocardiography at rest and during incremental exercise, and cardiac MRI at rest. Measurements at rest included basic haemodynamics, RV function and coupling efficiency (η). Measurements during incremental exercise included pulmonary vascular resistance (Z0), characteristic impedance (ZC, a measure of proximal PA stiffness) and proximal and distal PA compliance (CPA). RESULTS: In patients with PAH, the proximal PAs were significantly stiffer at maximum exercise (ZC =2.31±0.38 vs 1.33±0.15 WU×m2 at rest; p=0.003) and PA compliance was decreased (CPA=0.88±0.10 vs 1.32±0.17â mL/mmâ Hg/m2 at rest; p=0.0002). Z0 did not change with exercise. As a result, the resistance-compliance (RC) time decreased with exercise (0.67±0.05 vs 1.00±0.07 s at rest; p<10-6). When patients were grouped according to resting coupling efficiency, those with poorer η exhibited stiffer proximal PAs at rest, a lower maximum exercise level, and more limited CPA reduction at maximum exercise. CONCLUSIONS: In PAH, exercise causes proximal and distal PA stiffening, which combined with preserved Z0 results in decreased RC time with exercise. Stiff PAs at rest may also contribute to poor haemodynamic coupling, reflecting reduced pulmonary vascular reserve that contributes to limit the maximum exercise level tolerated.
Assuntos
Pressão Arterial , Tolerância ao Exercício , Exercício Físico , Hipertensão Pulmonar/fisiopatologia , Artéria Pulmonar/fisiopatologia , Rigidez Vascular , Função Ventricular Direita , Adulto , Idoso , Cateterismo Cardíaco , Chicago , Ecocardiografia Doppler , Ecocardiografia sob Estresse/métodos , Teste de Esforço , Feminino , Humanos , Hipertensão Pulmonar/diagnóstico , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Resistência Vascular , WisconsinRESUMO
Transient left ventricular apical ballooning is a newly defined syndrome characterized by sudden onset of chest symptoms, electrocardiographic changes characteristic of myocardial ischemia, transient left ventricular dysfunction-particularly in the apical region, low-grade troponin elevation, and no significant coronary stenosis by angiogram. This syndrome is also referred to as Takotsubo cardiomyopathy, "Ampulla" cardiomyopathy, Human Stress cardiomyopathy, and Broken Heart Syndrome. Emergency physicians, family physicians, general internists, and cardiologists may all encounter this syndrome at the point of contact. The similarity to acute coronary syndrome requires all clinicians who may potentially care for these patients to familiarize themselves with this newly recognized disease. We provide a recent case and review the current literature surrounding this syndrome.
Assuntos
Cardiomiopatias/diagnóstico , Idoso , Cardiomiopatias/sangue , Angiografia Coronária , Diagnóstico Diferencial , Ecocardiografia , Eletrocardiografia , Feminino , Humanos , Isquemia Miocárdica/diagnóstico , Síndrome , Troponina I/sangue , Disfunção Ventricular Esquerda/diagnóstico , Complexos Ventriculares Prematuros/diagnósticoRESUMO
BACKGROUND: Measurement of the ankle-brachial index (ABI) is recommended as a screening test for cardiovascular risk prediction in individuals > or = 50 years old; however, there is little data regarding the utility of the ABI as a screening test in individuals for whom physicians actually order non-invasive testing for cardiovascular risk prediction. METHODS: This study included 493 consecutive asymptomatic patients without known atherosclerotic vascular disease who were referred by their physician for measurement of the ABI and ultrasound measurement of carotid intima-media thickness (CIMT). ABI values were classified as "reduced" (<0.9), "normal" (0.9-1.3), and "increased" (>1.3). RESULTS: The mean age of the patients was 55.3 (standard deviation 7.5) years. Only 1 patient had a reduced ABI (0.2%). ABI values tended to be higher in those with increased CIMT (P=0.051); however, CIMT was not significantly different between those with normal and increased ABI values (P=0.802). There were no significant differences in the prevalence of traditional cardiovascular risk factors or carotid plaque presence among the ABI groups. CONCLUSIONS: Despite recommendations, the ABI is not sensitive as a screening tool for detecting subclinical atherosclerosis in asymptomatic middle-aged individuals.
Assuntos
Tornozelo/irrigação sanguínea , Arteriosclerose/diagnóstico por imagem , Artéria Braquial/diagnóstico por imagem , Ultrassonografia Doppler , Tornozelo/diagnóstico por imagem , Arteriosclerose/fisiopatologia , Velocidade do Fluxo Sanguíneo , Estenose das Carótidas/diagnóstico por imagem , Estenose das Carótidas/fisiopatologia , Distribuição de Qui-Quadrado , Feminino , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Fatores de RiscoRESUMO
BACKGROUND: There is great need for a simple, noninvasive tool that can be used in an office setting to screen for subclinical atherosclerosis. In patients referred for cardiovascular (CV) risk assessment, we evaluated the ability of ultrasound screening for carotid plaque to identify patients with advanced subclinical atherosclerosis. METHODS: Consecutive asymptomatic patients without vascular disease referred by their physician for measurement of the ankle-brachial pressure index and carotid intima-media thickness (CIMT) were included. Carotid intima-media thickness was measured using the standardized ultrasound protocol from the Atherosclerosis Risk in Communities (ARIC) study. Advanced atherosclerosis was defined as CIMT > or = 75th percentile for age, sex, and race in ARIC. RESULTS: The mean age of the 327 subjects was 55.4 years (SD 7.7 years). The 10-year Framingham CV risk was 5.1% (4.8%). In a multiple logistic regression model that included Framingham CV risk, ankle-brachial pressure index, and use of lipid-lowering medications, plaque presence significantly predicted advanced atherosclerosis (odds ratio 3.08, 95% CI 1.91-4.96, P < .001). In stepwise regression models that included age, body mass index, current tobacco use, family history of premature CV disease, fasting glucose, sex, systolic blood pressure, total/high-density lipoprotein cholesterol ratio, and use of antihypertensive and lipid-lowering medications, plaque presence independently predicted advanced atherosclerosis (P < .001). CONCLUSION: Ultrasound detection of carotid plaque helped identify asymptomatic patients with advanced subclinical atherosclerosis. Screening for carotid plaque is easier than determination of CIMT and may help detect asymptomatic patients at increased CV risk.
Assuntos
Doenças das Artérias Carótidas/diagnóstico por imagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , UltrassonografiaRESUMO
INTRODUCTION: While cerebrovascular disease has long been known to co-occur with Alzheimer's disease (AD), recent studies suggest an etiologic contribution to AD pathogenesis. We used 4D-Flow magnetic resonance imaging (MRI) to evaluate blood flow and pulsatility indices in the Circle of Willis. We hypothesized decreased mean blood flow and increased pulsatility, metrics indicative of poor vascular health, would be associated with cerebral atrophy and an AD cerebrospinal fluid (CSF) profile. METHODS: 312 patients along the AD continuum (172 middle-aged, 60 cognitively-healthy older, 44 mild cognitive impairment (MCI), and 36 AD) underwent MRI, CSF, and medical examinations. Regression was used to predict CSF biomarkers and atrophy from 4D-Flow, and ANCOVA to compare vascular health between groups. RESULTS: Decreased mean flow in the middle cerebral (MCA) and superior portion of the internal carotid arteries (sICA) and increased pulsatility in the MCA were associated with greater brain atrophy. Decreased mean flow in the sICA was associated with lower Aß-42 in the CSF, a pathological biomarker profile associated with AD. Interestingly, although metrics of flow and pulsatility differed markedly across the AD spectrum, there were no significant differences in cardiovascular risk score, mean arterial pressure and pulse pressure across the three age-matched older cohorts. DISCUSSION: By measuring intracranial arterial health directly with 4D-Flow MRI, these data suggest that intracranial arterial health is compromised in symptomatic AD. Even after accounting for disease stage, cerebral artery health is associated with atrophy and an AD Aß-42 profile, suggesting neurovascular health may contribute to the etiopathogenesis of AD.
RESUMO
Hyperhomocysteinemia has been associated with increased risk of atherosclerosis and myocardial infarction by a number of prospective case-control studies. A variety of genetic mutations, nutritional deficiencies, disease states, and drugs can elevate homocysteine concentrations. Treatment with folic acid with or without B-complex vitamins effectively lowers homocysteine levels. Whether therapy corresponds with decreased risk of coronary events is unknown, but may be promising. This article reviews the biochemistry of homocysteine metabolism, pathogeneisis, and etiology of hyperhomocysteinemia, along with its association with coronary artery disease, screening, and treatment.
Assuntos
Doença da Artéria Coronariana/etiologia , Homocisteína/metabolismo , Hiper-Homocisteinemia/complicações , Hiper-Homocisteinemia/terapia , Doença da Artéria Coronariana/sangue , Humanos , Hiper-Homocisteinemia/etiologia , Fatores de RiscoRESUMO
In this chapter, we have reviewed many of the steps necessary for effective CHD risk reduction. The first step in the office setting is to assess the individual CHD risk. This combines the evaluation of current CHD or a "secondary risk equivalent" with the counting of risk factors and in many cases, the absolute risk calculation. The next steps are to consider each of the major modifiable risk factors (hypertension, dyslipidemia, diabetes mellitus, smoking status) to set goals for each and then work to achieve those goals through lifestyle changes and medication therapy. We reviewed each of these risk factors in detail and then turned to a discussion of emerging risk factors that may help "fine-tune" the risk assessment in some borderline cases. We also discussed additional non-invasive testing that is available to the clinician to help refine the assessment of current burden of disease. Finally, we discuss some of the barriers that exist on both a global and local level to effective treatment of CHD risk factors.
Assuntos
Doenças Cardiovasculares/prevenção & controle , Prevenção Primária , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/etiologia , Doença das Coronárias/etiologia , Doença das Coronárias/prevenção & controle , Complicações do Diabetes , Diabetes Mellitus/diagnóstico , Diabetes Mellitus/terapia , Comportamentos Relacionados com a Saúde , Promoção da Saúde , Humanos , Estilo de Vida , Lipídeos/sangue , Serviços Preventivos de Saúde , Medição de Risco , Fatores de RiscoRESUMO
BACKGROUND: Previous studies have demonstrated gaps in achievement of low-density lipoprotein-cholesterol (LDL-C) goals among U.S. individuals at high cardiovascular disease risk; however, recent studies in selected populations indicate improvements. OBJECTIVE: We sought to define the longitudinal trends in achieving LDL-C goals among high-risk United States adults from 1999-2008. METHODS: We analyzed five sequential population-based cross-sectional National Health and Nutrition Examination Surveys 1999-2008, which included 18,656 participants aged 20-79 years. We calculated rates of LDL-C goal achievement and treatment in the high-risk population. RESULTS: The prevalence of high-risk individuals increased from 13% to 15.5% (pâ=â0.046). Achievement of LDL-C <100 mg/dL increased from 24% to 50.4% (p<0.0001) in the high-risk population with similar findings in subgroups with (27% to 64.8% p<0.0001) and without (21.8% to 43.7%, p<0.0001) coronary heart disease (CHD). Achievement of LDL-C <70 mg/dL improved from 2.4% to 17% (p<0.0001) in high-risk individuals and subgroups with (3.4% to 21.4%, p<0.0001) and without (1.7% to 14.9%, p<0.0001) CHD. The proportion with LDL-C ≥130 mg/dL and not on lipid medications decreased from 29.4% to 18% (pâ=â0.0002), with similar findings among CHD (25% to 11.9% pâ=â0.0013) and non-CHD (35.8% to 20.8% p<0.0001) subgroups. CONCLUSION: The proportions of the U.S. high-risk population achieving LDL-C <100 mg/dL and <70 mg/dL increased over the last decade. With 65% of the CHD subpopulation achieving an LDL-C <100 mg/dL in the most recent survey, U.S. LDL-C goal achievement exceeds previous reports and approximates rates achieved in highly selected patient cohorts.