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1.
Artículo en Inglés | MEDLINE | ID: mdl-38848794

RESUMEN

Cardiovascular disease (CVD) clinicians who care for seriously ill patients frequently report that they do not feel confident nor adequately prepared to manage patients' palliative care (PC) needs. With the goal, therefore, of increasing PC knowledge and skills amongst interprofessional clinicians providing CVD care, the ACC's PC Workgroup designed, developed, and implemented a comprehensive PC online educational activity. This paper describes the process and 13-month performance of this free, online activity for clinicians across disciplines and levels of training, "Palliative Care for the Cardiovascular Clinician" (PCCVC). A key component of PCCVC is that it is tailored to the lifelong learner; users can choose and receive credit for the activities that meet their individual learning needs. This webinar series was well-subscribed, and upon completion of the modules, learners reported better self-perceived abilities related to palliative care competencies. We propose PCCVC as a model for primary PC education for clinicians caring for individuals with other serious or life-shortening illnesses.

2.
MedEdPORTAL ; 19: 11310, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37081972

RESUMEN

Introduction: Quality improvement (QI) training is an essential component of resident medical education and a part of the ACGME core competencies. We present our residency's evidence-based QI curriculum, which outlines key components identified in the literature for successful QI education. Methods: Our curriculum included a mandatory five-part longitudinal educational series during ambulatory education sessions for second-year residents. Modeled after the Institute for Healthcare Improvement model for improvement and taught by a chief resident, our curriculum introduced residents to key QI concepts through case-based, just-in-time didactics and applied experiential learning via concurrent resident-led longitudinal QI projects. Residents received structured, multilayer mentorship from a faculty mentor in their field of interest and the chief resident of quality and patient safety. Their work-in-progress projects were presented to faculty QI experts and institutional leadership for additional feedback and mentorship. Results: Since 2016, a total of 234 internal medicine residents have completed our QI curriculum and developed 67 QI projects, which have been presented at various local, regional, and national conferences. In the 2 most recent academic years, Quality Improvement Knowledge Application Tool Revised (QIKAT-R) scores significantly increased from 4.6 precurriculum to 6.3 postcurriculum (p < .001). Discussion: A longitudinal, experiential, and mentored QI curriculum teaches residents QI skill sets through incorporating mechanisms associated with successful educational initiatives and adult learning theory. Our QIKAT-R results and project output show that our curriculum is associated with improved trainee QI knowledge and systems-level improvements.


Asunto(s)
Internado y Residencia , Adulto , Humanos , Aprendizaje Basado en Problemas , Mentores , Mejoramiento de la Calidad , Medicina Interna/educación , Curriculum
3.
Artículo en Inglés | MEDLINE | ID: mdl-36609533

RESUMEN

OBJECTIVES: Heart failure (HF) portends significant morbidity and mortality. Integrating palliative care (PC) with HF management improves quality of life and preparedness planning. At a Veterans Affairs hospital, PC was used in 6.5% of patients admitted for HF from October 2019 to September 2020. We sought to increase the percentage of referrals to PC to 20%. METHODS: PC referral guidelines were developed and used to screen all HF admissions between October 2020 and May 2021. Point-of-care education on the benefits of PC was delivered to teams caring for patients who met PC referral criteria. Changes were tested using Plan-Do-Study-Act (PDSA) cycles. Results were analysed using run charts. RESULTS: During the study period, there were 109 HF admissions in patients who were not already followed by PC. Thirty-one (28%) received a new PC consult. The mean age was 81±9.5 years, median B-type natriuretic peptide was 1202 pg/mL, and mean length of stay was 8±5 days. After our intervention, there was an upward shift in the percentage of new referrals to PC with 6 values above the baseline median, which represents a significant change. CONCLUSIONS: Through multiple PDSA cycles, referrals to PC for patients admitted with HF increased from 6.5% to 28%. Point-of-care education was an effective tool to teach medical teams about the benefits of PC. Inpatient teams more consistently and independently considered PC for patients with HF, representing a cultural shift. This quality improvement model may serve as a paradigm to improve the care of HF patients.

4.
Card Fail Rev ; 8: e10, 2022 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-35433030

RESUMEN

Type 2 diabetes is an increasingly common comorbidity of stage C heart failure with reduced ejection fraction (HFrEF). The two diseases are risk factors for each other and can bidirectionally independently worsen outcomes. The regulatory requirement of cardiovascular outcomes trials for antidiabetic agents has led to an emergence of novel therapies with robust benefits in heart failure, and clinicians must now ensure they are familiar with the management of patients with concurrent diabetes and stage C HFrEF. This review summarises the current evidence for the management of type 2 diabetes in stage C HFrEF, recapitulating data from landmark heart failure trials regarding the use of guideline-directed medical therapy for heart failure in patients with diabetes. It also provides a preview of upcoming clinical trials in these populations.

5.
Am Heart J Plus ; 132022 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-35243454

RESUMEN

Heart failure is a significant public health burden that differentially impacts women. Important sex- and gender-based differences in HF risk factors, presentation, and treatment exist, and the generation of high-quality evidence is critical to elucidate these differences. Despite the remarkable growth of the heart failure clinical research enterprise over the last four decades, women remain underrepresented in heart failure clinical trials relative to the population prevalence of heart failure in women. This disparity has resulted in significant knowledge gaps regarding the optimal care of women with heart failure. In this review, we summarize the existing literature regarding the participation of women in heart failure clinical trials. Additionally, we explain the evidence surrounding sex- and gender-specific barriers to enrollment in heart failure clinical trials and describe interventions that should be implemented throughout the clinical trial lifespan to achieve sex and gender parity.

6.
BMJ Case Rep ; 14(8)2021 Aug 03.
Artículo en Inglés | MEDLINE | ID: mdl-34344644

RESUMEN

An 87-year-old man with a history of osteoarthritis presented with worsening knee pain. He was prescribed acetaminophen with codeine. A few days later, he developed a rash on his right buttock and proximal thigh, similar to a rash he experienced in the past when he took over-the-counter (OTC) acetamenophen and an unknown lozenge to treat a presumed viral illness. A fixed drug eruption (FDE) was diagnosed and the patient was asked to avoid Tylenol and other OTC lozenges. Tylenol was entered as an allergy in the electronic medical records. However, since Tylenol, not acetaminophen was listed in the allergy profile, the order for acetaminophen and codeine did not generate an alert for the prescribing physician. Additionally, the dispensing pharmacist did not question the prescribing physician and the patient, unaware that acetaminophen in the pain medication is the same drug as Tylenol, took it and developed recurrent FDE.


Asunto(s)
Acetaminofén , Erupciones por Medicamentos , Acetaminofén/efectos adversos , Anciano de 80 o más Años , Codeína/efectos adversos , Erupciones por Medicamentos/etiología , Humanos , Masculino , Medicamentos sin Prescripción , Dolor
7.
PLoS One ; 15(12): e0242928, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33270648

RESUMEN

IMPORTANCE: Patient outcomes in heart failure clinical trials are generally better than those observed in real-world settings. This may be related to stricter inclusion and exclusion criteria in clinical trials. OBJECTIVE: We study sought to characterize the clinical implications of differences between patients in clinical trials and those in a real-world registry of patients receiving left ventricular assist devices (LVADs). DESIGN, SETTING, AND PARTICIPANTS: This retrospective cohort study included all patients in INTERMACS (the Interagency Registry for Mechanically Assisted Circulatory Support) who were implanted with an axial flow LVAD from 2010 to 2015 to allow for equivalent comparisons. MAIN OUTCOMES AND MEASURES: Differences in patient characteristics and 2-year rates of adverse outcomes with those reported in the ENDURANCE and MOMENTUM 3 clinical trials. Survival analyses were used to assess the relationships between prespecified patient factors and clinical outcomes. RESULTS: Of the 10,937 LVAD recipients identified in INTERMACS between 2010-2015, 44% met at least 1 clinical trial exclusion criterion. The 2-year incidence of stroke and death amongst LVAD recipients in INTERMACS and the landmark clinical trials differed significantly (P<0.04, both). Nevertheless, patients who would have been excluded from the clinical trials did not have dramatically different 2-year mortality outcomes in INTERMACS [2y survival estimate: 66.4%, 95% CI (64.9-67.9%) versus 71.9%, 95% CI (70.6-73.1%)]. Clinical interventions driving a significantly increased risk of death were relatively rare (<5% of implants) and included mechanical ventilation, ECMO, severe thrombocytopenia, and dialysis. CONCLUSIONS AND RELEVANCE: Most exclusion criteria used in LVAD clinical trials did not afford a substantially greater risk to patients in the real-world setting. In the relatively infrequent cases of end stage renal disease, thrombocytopenia, respiratory failure, and need for ECMO, the risks and benefits of LVAD therapy need careful weighting and further study.


Asunto(s)
Ensayos Clínicos como Asunto , Insuficiencia Cardíaca/terapia , Corazón Auxiliar , Anciano , Estudios de Cohortes , Progresión de la Enfermedad , Femenino , Insuficiencia Cardíaca/patología , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
9.
JACC Heart Fail ; 8(9): 770-779, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32653446

RESUMEN

OBJECTIVES: This study sought to use INTERMACS (Interagency Registry for Mechanically Assisted Circulatory Support) results to evaluate sex differences in the use and clinical outcomes of left ventricular assist devices (LVAD). BACKGROUND: Despite a similar incidence of heart failure in men and women, prior studies have highlighted potential underuse of LVADs in women, and studies of clinical outcomes have yielded conflicting results. METHODS: Patients were enrolled from the INTERMACS study who underwent implantation of their first continuous-flow LVAD between 2008 and 2017, and survival analyses stratified by sex were conducted. RESULTS: Among the 18,868 patients, 3,984 (21.1%) were women. At 1 year, women were less likely to undergo heart transplantation than men (17.9% vs. 20.0%, respectively; p = 0.003). After multivariable adjustments, women had a higher risk of death (hazard ratio [HR]: 1.15; 95% confidence interval [CI]: 1.07 to 1.23; p < 0.001) and were more likely to incur post-implantation adverse events, including rehospitalization, bleeding, stroke, and pump thrombosis or device malfunction. Although women younger than 50 years of age had an increased risk of death compared to men of the same age (HR: 1.34; 95% CI: 1.12 to 1.6), men and women 65 years of age and older had a similar risk of death (HR: 1.09; 95% CI: 0.95 to 1.24). CONCLUSIONS: This study found that women had a higher risk of mortality and adverse events after LVAD. Only 1 in 5 LVADs were implanted in women, and women were less likely to receive a heart transplant than men. Further investigation is needed to understand the causes of adverse events and potential underuse of advanced treatment options in women.


Asunto(s)
Insuficiencia Cardíaca , Trasplante de Corazón , Corazón Auxiliar , Anciano , Femenino , Insuficiencia Cardíaca/terapia , Humanos , Masculino , Sistema de Registros , Estudios Retrospectivos , Caracteres Sexuales , Resultado del Tratamiento
10.
JACC Heart Fail ; 8(7): 569-577, 2020 07.
Artículo en Inglés | MEDLINE | ID: mdl-32535119

RESUMEN

BACKGROUND: Psychiatric comorbidities play a key role in patient selection for left ventricular assist devices (LVADs), but their impact on clinical outcomes is unknown. OBJECTIVES: The goal of this study was to examine the clinical impact of psychiatric illness on outcomes in patients receiving LVADs for end-stage heart failure (HF). METHODS: The study identified adults in the Interagency Registry for Mechanically Assisted Circulatory Support with psychiatric comorbidities (history of alcohol abuse, drug use, narcotic dependence, depression, and other major psychiatric diagnoses) receiving continuous-flow LVADs from 2008 to 2017. Demographic characteristics, survival, adverse events, and quality of life scores were compared for patients with and without each psychiatric comorbidity. RESULTS: Over the study period, the prevalence of psychiatric comorbidities was low: alcohol abuse, n = 1,093 (5.5%); drug use, n = 1,077 (5.4%); narcotic dependence, n = 96 (0.5%); depression, n = 401 (2.0%); and other major psychiatric illnesses, n = 265 (1.4%). Narcotic dependence (adjusted hazard ratio: 1.9; 95% confidence interval: 1.2 to 3.0; p = 0.004) and other major psychiatric illnesses (adjusted hazard ratio: 1.4; 95% confidence interval: 1.0 to 1.9; p = 0.02) were associated with increased risk of mortality, whereas alcohol abuse, drug use, and depression were not. All comorbidities except narcotic dependence were associated with increased risk of rehospitalization and device-related infection (both p < 0.05). Kansas City Cardiomyopathy Questionnaire scores were lower from 6 to 24 months' post-implantation among patients with psychiatric comorbidities (p < 0.05). CONCLUSIONS: Despite a low prevalence of psychiatric comorbidities among LVAD recipients, these conditions were associated with mortality risk, adverse events, and poorer quality of life. Further study is needed to understand how specific psychiatric conditions affect outcomes and how to best manage this vulnerable patient population.


Asunto(s)
Insuficiencia Cardíaca/epidemiología , Corazón Auxiliar , Trastornos Mentales/epidemiología , Calidad de Vida , Sistema de Registros , Función Ventricular Izquierda/fisiología , Adulto , Anciano , Comorbilidad , Femenino , Estudios de Seguimiento , Insuficiencia Cardíaca/fisiopatología , Insuficiencia Cardíaca/terapia , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Factores de Tiempo , Estados Unidos/epidemiología
11.
JAMA Cardiol ; 5(2): 175-182, 2020 02 01.
Artículo en Inglés | MEDLINE | ID: mdl-31738366

RESUMEN

Importance: Left ventricular assist devices (LVADs) improve outcomes in patients with advanced heart failure, but little is known about the role of neurohormonal blockade (NHB) in treating these patients. Objective: To analyze the association between NHB blockade and outcomes in patients with LVADs. Design, Setting, and Participants: This retrospective cohort analysis of the Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) included patients from more than 170 centers across the United States and Canada with continuous flow LVADs from 2008 to 2016 who were alive with the device in place at 6 months after implant. The data were analyzed between February and November 2019. Exposures: Patients were stratified based on exposure to NHB and represented all permutations of the following drug classes: angiotensin-converting enzyme inhibitors or angiotensin receptor blockers, ß-blockers, and mineralocorticoid antagonists. Main Outcomes and Measures: The outcomes of interest were survival at 4 years and quality of life at 2 years based on Kansas City Cardiomyopathy Questionnaire scores and a 6-minute walk test. Results: A total of 12 144 patients in INTERMACS met inclusion criteria, of whom 2526 (20.8% ) were women, 8088 (66.6%) were white, 3024 (24.9%) were African American, and 753 (6.2%) were Hispanic; the mean (SD) age was 56.8 (12.9) years. Of these, 10 419 (85.8%) were receiving NHB. Those receiving any NHB medication at 6 months had a better survival rate at 4 years compared with patients not receiving NHB (56.0%; 95% CI, 54.5%-57.5% vs 43.9%; 95% CI, 40.5%-47.7%). After sensitivity analyses with an adjusted model, this trend persisted with patients receiving triple therapy with an angiotensin-converting enzyme inhibitor or angiotensin receptor blocker, ß-blocker, and mineralocorticoid antagonist having the lowest hazard of death compared with patients in the other groups (hazard ratio, 0.34; 95% CI, 0.28-0.41). Compared with patients not receiving NHB, use of NHB was associated with a higher Kansas City Cardiomyopathy Questionnaire score (66.6; bootstrapped 95% CI, 65.8-67.3 vs 63.0; bootstrapped 95% CI, 60.1-65.8; P = .02) and a 6-minute walk test (1103 ft; bootstrapped 95% CI, 1084-1123 ft vs 987 ft; bootstrapped 95% CI, 913-1060 ft; P < .001). Conclusions and Relevance: Among patients with LVADs who tolerated NHB therapy, continued treatment was associated with improved survival and quality of life. The optimal heart failure regimen for patients after LVAD implant may be the initiation and continuation of guideline-directed medical therapy.


Asunto(s)
Insuficiencia Cardíaca/tratamiento farmacológico , Insuficiencia Cardíaca/cirugía , Corazón Auxiliar , Neurotransmisores/antagonistas & inhibidores , Adulto , Anciano , Estudios de Cohortes , Terapia Combinada , Femenino , Insuficiencia Cardíaca/mortalidad , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Tasa de Supervivencia , Resultado del Tratamiento
12.
Circ Heart Fail ; 12(11): e006369, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-31707800

RESUMEN

BACKGROUND: The impact of respiratory failure on patients undergoing left ventricular assist device (LVAD) implantation is not well understood, especially since these patients were excluded from landmark clinical trials. We sought to evaluate the associations between immediate preimplant and postimplant respiratory failure on outcomes in advanced heart failure patients undergoing LVAD implantation. METHODS AND RESULTS: We included all patients in the Interagency Registry for Mechanically Assisted Circulatory Support who were implanted with continuous-flow LVADs from 2008 to 2016. Of the 16 362 patients who underwent continuous-flow LVAD placement, 906 (5.5%) required preimplant intubation within 48 hours before implantation, and 1001 (6.1%) patients developed respiratory failure within 1 week after implantation. A higher proportion of patients requiring preimplant intubation were Interagency Registry for Mechanically Assisted Circulatory Support profile 1, required mechanical circulatory support, and presented with cardiac arrest or myocardial infarction (P<0.001, all). At 1 year, 54.3% of patients intubated preimplant were alive without transplant, 20.1% had been transplanted, and 24.2% died before transplant. Patients requiring preimplant intubation had higher rates of postimplant complications, including bleeding, stroke, and right ventricular assist device implantation (P<0.01 for all). Among Interagency Registry for Mechanically Assisted Circulatory Support profile 1 patients, preimplant intubation incurred additional risk of death at 1 year compared with Interagency Registry for Mechanically Assisted Circulatory Support profile 1 patients not intubated (hazard ratio, 1.37 [95% CI, 1.13-1.65]; P=0.001). After multivariable analysis, both preimplant intubation (hazard ratio, 1.20 [95% CI, 1.03-1.41]; P=0.021) and respiratory failure within 1 week (hazard ratio, 2.54 [95% CI, 2.26-2.85]; P<0.001) were associated with higher all-cause 1-year mortality. CONCLUSIONS: Respiratory failure both before and after LVAD implantation identifies an advanced heart failure population with significantly worse 1-year mortality. This data might be helpful in counseling patients and their families about expectations about life with an LVAD.


Asunto(s)
Insuficiencia Cardíaca/terapia , Corazón Auxiliar , Pulmón/fisiopatología , Insuficiencia Respiratoria/fisiopatología , Función Ventricular Izquierda , Anciano , Progresión de la Enfermedad , Femenino , Fragilidad/diagnóstico , Fragilidad/mortalidad , Fragilidad/fisiopatología , Estado de Salud , Insuficiencia Cardíaca/diagnóstico , Insuficiencia Cardíaca/mortalidad , Insuficiencia Cardíaca/fisiopatología , Humanos , Intubación Intratraqueal , Masculino , Persona de Mediana Edad , Diseño de Prótesis , Calidad de Vida , Recuperación de la Función , Sistema de Registros , Insuficiencia Respiratoria/diagnóstico , Insuficiencia Respiratoria/mortalidad , Insuficiencia Respiratoria/terapia , Estudios Retrospectivos , Medición de Riesgo , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento
13.
JACC Heart Fail ; 7(12): 1069-1078, 2019 12.
Artículo en Inglés | MEDLINE | ID: mdl-31779930

RESUMEN

OBJECTIVES: The purpose of this study was to examine outcomes after left ventricular assist device (LVAD) implantation in older adults (>75 years of age). BACKGROUND: An aging heart failure population together with improvements in mechanical circulatory support (MCS) technology have led to increasing LVAD implantations in older adults. However, data presenting age-specific outcomes are limited. METHODS: Adult patients in the Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) who required durable MCS between 2008 and 2017 were included. Patients were stratified by 4 age groups: <55 years of age, 55 to 64 years of age, and >75 years of age. Kaplan-Meier survival estimates were used to assess post-LVAD outcomes, with log-rank testing used to compare groups. Univariate and multivariate cox proportional hazard regression models were used to determine predictors of survival and complications. RESULTS: A total of 20,939 individuals received an LVAD during the study period: 7,743 (37.0%) were <55 years of age, 6,755 (32.3%) were 55 to 64 years of age, 5,418 (25.9%) were 65 to 74 years of age, and 1,023 (4.9%) were ≥75 years of age or older. After multivariate adjustment, adults ≥75 years of age had increased mortality post-LVAD implantation. Elderly patients with LVADs had a higher incidence of gastrointestinal bleeding but lower rates of device thrombosis. Compared to 84.5% of patients <55 years of age who were discharged home, only 46.8% of adults ≥75 years of age were discharged home following implantation (p < 0.001). Use of a RVAD, serum albumin level, and 6-min walk test distances were identified as predictors of outcomes in the oldest cohort. CONCLUSIONS: Despite careful selection of older adults for LVAD implantation, age remains a significant predictor of mortality. Higher bleeding and lower clotting risk in elderly patients with LVADs support the use of a less intense antithrombotic regimen in this unique population.


Asunto(s)
Insuficiencia Cardíaca/cirugía , Corazón Auxiliar , Factores de Edad , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/epidemiología , Implantación de Prótesis , Sistema de Registros , Resultado del Tratamiento , Estados Unidos
14.
J Biomech ; 49(7): 1214-1220, 2016 05 03.
Artículo en Inglés | MEDLINE | ID: mdl-26924657

RESUMEN

During intervertebral disc (IVD) injury and degeneration, annulus fibrosus (AF) cells experience large mechanical strains in a pro-inflammatory milieu. We hypothesized that TNF-α, an initiator of IVD inflammation, modifies AF cell mechanobiology via cytoskeletal changes, and interacts with mechanical strain to enhance pro-inflammatory cytokine production. Human AF cells (N=5, Thompson grades 2-4) were stretched uniaxially on collagen-I coated chambers to 0%, 5% (physiological) or 15% (pathologic) strains at 0.5Hz for 24h under hypoxic conditions with or without TNF-α (10ng/mL). AF cells were treated with anti-TNF-α and anti-IL-6. ELISA assessed IL-1ß, IL-6, and IL-8 production and immunocytochemistry measured F-actin, vinculin and α-tubulin in AF cells. TNF-α significantly increased AF cell pro-inflammatory cytokine production compared to basal conditions (IL-1ß:2.0±1.4-84.0±77.3, IL-6:10.6±9.9-280.9±214.1, IL-8:23.9±26.0-5125.1±4170.8pg/ml for basal and TNF-α treatment, respectively) as expected, but mechanical strain did not. Pathologic strain in combination with TNF-α increased IL-1ß, and IL-8 but not IL-6 production of AF cells. TNF-α treatment altered F-actin and α-tubulin in AF cells, suggestive of altered cytoskeletal stiffness. Anti-TNF-α (infliximab) significantly inhibited pro-inflammatory cytokine production while anti-IL-6 (atlizumab) did not. In conclusion, TNF-α altered AF cell mechanobiology with cytoskeletal remodeling that potentially sensitized AF cells to mechanical strain and increased TNF-α-induced pro-inflammatory cytokine production. Results suggest an interaction between TNF-α and mechanical strain and future mechanistic studies are required to validate these observations.


Asunto(s)
Anillo Fibroso/citología , Citocinas/metabolismo , Estrés Mecánico , Actinas/metabolismo , Adulto , Anciano , Células Cultivadas , Humanos , Inflamación/metabolismo , Persona de Mediana Edad
15.
High Blood Press Cardiovasc Prev ; 22(3): 275-80, 2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-25986077

RESUMEN

INTRODUCTION: The ankle-brachial index (ABI) is a reliable screening procedure for peripheral artery disease detection. However, ABI testing is time-consuming and requires trained personnel, which may preclude its routine use in population-based surveys. Preliminary data suggest a relationship between ABI values and pulse pressure (PP) levels. AIM: To assess whether PP calculation might help to detect persons who need ABI screening in population-based studies. METHODS: All Atahualpa residents aged ≥60 years were identified during a door-to-door survey and invited to undergo ABI testing. Non-consented persons and those with ABI ≥1.4 were excluded. Using generalized linear and logistic regression models adjusted for demographics and cardiovascular risk factors, as well as receiver operator characteristics curve analysis, we evaluated the association between PP values and ABI, as well as the reliability of PP to identify candidates for ABI testing. RESULTS: Out of 239 participants (mean age 70 ± 8 years, 62 % women), 46 (19 %) had an ABI ≤0.9 and 136 (57 %) had PP >65 mmHg, with a negative relationship between them (R = -0.386, p < 0.0001). A PP >65 mmHg was associated with an ABI ≤ 0.9 in the logistic regression model (OR 3.46, 95 % CI 1.07-11.2, p = 0.038). Continuous PP levels also correlated negatively with ABI (ß -0.0014, 95 % CI -0.0024 to -0.0004, p = 0.005). The sensitivity of a PP >65 mmHg to predict a low ABI was 85 %, and the specificity was 50 %. In contrast, the sensitivity of blood pressure ≥140/90 mmHg was 27 % and the specificity was 10 %. The area under the curve for the predictive value of a PP >65 mmHg was 0.673 (95 % CI 0.609-0.736), and that of a blood pressure ≥140/90 mmHg was 0.371 (95 % CI 0.30-0.443), with a significant difference between them (p < 0.0001). CONCLUSIONS: PP calculation may be a simple tool to detect candidates for ABI testing in population-based studies.


Asunto(s)
Índice Tobillo Braquial , Presión Sanguínea , Enfermedad Arterial Periférica/diagnóstico , Anciano , Área Bajo la Curva , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Enfermedad Arterial Periférica/fisiopatología , Valor Predictivo de las Pruebas , Curva ROC
16.
Int J Stroke ; 10(4): 589-93, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25580986

RESUMEN

BACKGROUND: An abnormal ankle-brachial index has been associated with overt stroke and coronary heart disease, but little is known about its relationship with silent cerebral small vessel disease. AIM: To assess the value of ankle-brachial index as a predictor of silent small vessel disease in an Ecuadorian geriatric population. METHODS: Stroke-free Atahualpa residents aged ≥60 years were identified during a door-to-door survey. Ankle-brachial index determinations and brain magnetic resonance imaging were performed in consented persons. Ankle-brachial index ≤0.9 and ≥1.4 were proxies of peripheral artery disease and noncompressible arteries, respectively. Using logistic regression models adjusted for age, gender, and cardiovascular health status, we evaluated the association between abnormal ankle-brachial index with silent lacunar infarcts, white matter hyperintensities, and cerebral microbleeds. RESULTS: Mean age of the 224 participants was 70 ± 8 years, 60% were women, and 80% had poor cardiovascular health status. Ankle-brachial index was ≤0.90 in 37 persons and ≥1.4 in 17. Magnetic resonance imaging showed lacunar infarcts in 27 cases, moderate-to-severe white matter hyperintensities in 47, and cerebral microbleeds in 26. Adjusted models showed association of lacunar infarcts with ankle-brachial index ≤ 0.90 (OR: 3.72, 95% CI: 1.35-10.27, P = 0.01) and with ankle-brachial index ≥ 1.4 (OR: 3·85, 95% CI: 1.06-14.03, P = 0.04). White matter hyperintensities were associated with ankle-brachial index ≤ 0.90 (P = 0.03) and ankle-brachial index ≥ 1.4 (P = 0.02) in univariate analyses. There was no association between ankle-brachial index groups and cerebral microbleeds. CONCLUSIONS: In this population-based study conducted in rural Ecuador, apparently healthy individuals aged ≥60 years with ankle-brachial index values ≤0.90 and ≥1.4 are almost four times more likely to have a silent lacunar infarct. Ankle-brachial index screening might allow recognition of asymptomatic people who need further investigation and preventive therapy.


Asunto(s)
Índice Tobillo Braquial , Encéfalo/patología , Enfermedades de los Pequeños Vasos Cerebrales/diagnóstico , Enfermedades de los Pequeños Vasos Cerebrales/patología , Anciano , Enfermedades de los Pequeños Vasos Cerebrales/fisiopatología , Ecuador , Femenino , Humanos , Modelos Logísticos , Imagen por Resonancia Magnética , Masculino , Población Rural , Accidente Vascular Cerebral Lacunar/patología , Sustancia Blanca/patología
18.
Int J Vasc Med ; 2014: 643589, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25389500

RESUMEN

Background. Little is known on the prevalence of peripheral artery disease (PAD) in developing countries. Study design. Population-based study in Atahualpa. In Phase I, the Edinburgh claudication questionnaire (ECQ) was used for detection of suspected symptomatic PAD; persons with a negative ECQ but a pulse pressure ≥65 mmHg were suspected of asymptomatic PAD. In Phase II, the ankle-brachial index will be used to test reliability of screening instruments and to determine PAD prevalence. In Phase III, participants will be followed up to estimate the relevance of PAD as a predictor of vascular outcomes. Results. During Phase I, 665 Atahualpa residents aged ≥40 years were enrolled (mean age: 59.5 ± 12.6 years, 58% women). A poor cardiovascular health status was noticed in 464 (70%) persons of which 27 (4%) had a stroke and 14 (2%) had ischemic heart disease. Forty-four subjects (7%) had suspected symptomatic PAD and 170 (26%) had suspected asymptomatic PAD. Individuals with suspected PAD were older, more often women, and had a worse cardiovascular profile than those with nonsuspected PAD. Conclusions. Prevalence of suspected PAD in this underserved population is high. Subsequent phases of this study will determine whether prompt detection of PAD is useful to reduce the incidence of catastrophic vascular diseases in the region.

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