Conciencia de enfermedad cardiovascular y conocimiento sobre factores de riesgo y prevención cardiovascular: resultados chilenos de encuesta SIAC cono sur / Awareness of risk factors and prevention of cardiovascular disease in chile: SIAC cono sur survey

Resumen La conciencia de la enfermedad cardiovascular (ECV) en mujeres es crucial para prevenir futuros eventos cardiovasculares. En Chile, la percepción sobre ECV es baja. Objetivo: Actualizar el grado de conocimiento de las chilenas sobre ECV. Método: Estudio de corte transversal realizado a través de encuesta online a mujeres entre 20 y 70 años de edad, residentes en Chile durante marzo 2020. La invitación se efectuó a través de redes sociales. La muestra fue no probabilística, ponderándose por edad, nivel socioeconómico y región de residencia (Región Metropolitana, Coquimbo, Valparaíso, Bío-Bío). Resultados: Se obtuvieron 1227 cuestionarios validados. La muestra ponderada correspondió a 900 mujeres. La percepción de ECV como principal causa de muerte fue de 8%, menor que las correspondientes a cáncer de mama (44%) y muerte violenta / homicidio (20%). Como principal problema de salud, la opción más percibida fue cáncer general (39%), seguido de diabetes (18%). Sólo 6 % refirió la ECV como el principal problema. Los principales accesos a la información sobre ECV fueron la internet y las redes sociales (64%, mayor en <30 años), y en el consultorio (32%). La opresión o dolor en el pecho fueron los síntomas más reconocidos asociados al infarto, siendo más seleccionado por mujeres con nivel educacional alto (p< 0.05). Conclusión: Persiste una baja percepción del riesgo de la ECV como principal causa de muerte y problema de salud en mujeres chilenas, aunque tienen acceso a la información y reconocen síntomas de infarto. Es necesario adaptar las estrategias comunicacionales para incrementar la percepción de riesgo CV.

Abstract Awareness of cardiovascular disease (CVD) in women is crucial to prevent cardiovascular events. According to prior information the perception and knowledge about CVD in Chile is extremely low. The aim of this study was to update the information about awareness of CVD in Chilean women. Method: Cross-sectional study carried out through an online survey. Data was obtained from women between 20 and 70 years old during March 2020. Social networks were used to recruit participants. The sample was non-probabilistic, weighted by age, socio-economic level and region of residence (Metropolitan Region, Coquimbo, Valparaíso, Bío-Bío). Results: 1227 validated surveys were obtained. The weighted sample corresponded to 900 women. CVD was perceived as the main cause of death in 8% of women, compared to higher degrees of perception for breast cancer (44%) and violent death/homicide (20%). CVD was perceived as the main health problem by only 6% of women, compared to cancer (39%) and diabetes (18%). The primary source of information about CVD were the internet and social networks (64%,higher in women <30 years old), and the doctor's office (32%). Chest tightness or pain as symptoms associated with a heart attack were significantly more recognized by respondents with a high educational level (p<0.05). Conclusion: An extremely low awareness about CVD as the main cause of death and health problem is persistent in Chilean women, notwithstanding that they have access to information and recognize symptoms of a heart attack. It is necessary to modify our communication strategies to increase the perception of CV risk in Chilean women.

Evaluación y utilidad del cuestionario DASI (duke activity score index) para la estimación de capacidad funcional en población chilena / A spanish version of the DASI questionnaire for estimation of functional capacity and cardiovascular risk applied to a chilean population

RESUMEN: El Duke Activity Status Index (DASI) es un cuestionario inglés utilizado para la estimación de capacidad funcional, que se ha correlacionado con equivalentes metabólicos (METs) y con consumo de oxígeno (VO2max). No existe información de su aplicación en población chilena. El objetivo fue evaluar la utilidad de una versión de DASI traducida al español y adaptada a población local, para predecir capacidad funcional determinada en prueba de esfuerzo máxima. Método: Se tradujo al español el DASI junto con adaptación de preguntas para población local. El cuestionario fue auto administrado previo a la realización de una prueba de esfuerzo máximo, sólo detenida por síntomas y percepción de esfuerzo de ≥17 /20 en escala de Borg. Se correlacionó METs con VO2max logrados en esfuerzo versus los estimados por DASI. Resultados: Se incorporaron 480 sujetos (edad x:50.9 ±15.3 años). La mediana (IQ) de METS estimados por DASI fue 9,2 (8,2-9,8). El valor α de Cronbach y Formula 20 de Kuder Richardson fue 0,72. El cuestionario fue de rápida aplicación. Se observó correlación significativa entre METs (r: 0.44; p< 0.001) y VO2max (r: 0,37; p< 0.001) determinados por cuestionario DASI y prueba de esfuerzo máxima. Conclusión: El DASI traducido y adaptado a población chilena es un instrumento sencillo de completar, que se correlaciona positivamente con capacidad funcional de forma similar a lo descrito en otros países, entregando una herramienta útil para la evaluación y predicción de riesgo cardiovascular.

ABSTRACT: The Duke Activity Status Index (DASI) is an English questionnaire used to estimate functional capacity and physical fitness that correlates with peak oxygen uptake (VO2max) and metabolic equivalents (METs). There is no available information of its application in Chilean population. Aim: to assess the efficacy of a Spanish version of the DASI questionnaire in predicting functional capacity in a Chilean population. Methods: DASI was translated into a Spanish version and adapted to local population and culture. The questionnaire was self-administered prior to carrying out a treadmill exercise stress testing, stopped only by symptoms or a perception of stress ≥17 / 20 on the Borg scale. Internal consistency was estimated with two tests. A correlation was performed between the METs and VO2max achieved in treadmill stress testing versus those estimated by DASI. Results: 480 subjects were enrolled (age x: 50.9 ±15.3 years old). The median (IQ) DASI score was 9,2 (8,2-9,8). Both Cronbach´s α and Kuder Richardson Formula 20 were 0,72. DASI was easy and quick to apply. A significant correlation was observed between METS by DASI and those estimated by stress testing (r: 0.44: p<0.001); the same was true for the estimation of VO2max (r:0.37: p<0.001). Conclusion: The Spanish DASI translation adapted to Chilean population is an easy instrument to apply. Results are similar those obtained in other countries in the estimation of functional capacity.

Recomendaciones en la prevención secundaria de cardiopatía isquémica en la mujer / Secondary prevention of ischemic heart disease in women

Resumen: La enfermedad cardiovascular en la mujer es la principal causa de muerte en Chile. La mujer con cardiopatía isquémica coronaria representa un riesgo de mortalidad dos veces mayor que el del hombre. Desgraciadamente, las mujeres han sido subrepresentadas en la mayoría de los estudios clínicos randomizados en prevención secundaria, y más aún, son pocos los que presentan análisis específicos de género en cuanto a la terapia y los puntos finales duros. Así, la evidencia que existe ha sido dirigida especialmente a hombres. Para reducir esta brecha, presentamos una revisión de la información en las distintas terapias en prevención secundaria de cardiopatía isquémica, destacando los resultados de trabajos en que se hizo análisis género-específico.

Abstract: Cardiovascular disease is the main cause of death in Chilean women. Ischemic heart disease mortality rate in women is two times that of in men. Unfortunately, there have been less enrollment of women in clinical cardiovascular trials and a lack of gender-specific analysis of clinical trial data. Therefore, the evidence for secondary preventive recommendations have been focused on men. To bridge this gap, in this review we address the data for secondary preventive therapies for ischemic heart disease in women assessing the available gender-specific data.

Ejercicio: una herramienta clave en la prevención cardiovascular: Consenso de la Sociedad Chilena de Cardiología y Cirugía Cardiovascular y de la Sociedad Chilena de Kinesiología en Cardiología y Cirugía Cardiovascular / Excercise, a key intervention in Cardiovascular Prevention: Consensus of the Chilean Society of Cardiology and Cardiovascular Surgery and the Chilean Society of Kinesiology in Cardiology and Cardiovascular Surgery

This is a Document from de Chilean Society of Cardiology and Cardiovascular Surgery, along with the Chilean Society of Physical Therapy of Cardiology and Cardiovascular Surgery.

Guías para la monitorización ambulatoria de presión arterial de 24 horas: documento de la Sociedad Chilena de Cardiología y Cirugía Cardiovascular / 24 hour blood pressure monitoring: recommendations from the Chilean Society of Cardiology and Cardiovascular Surgery

Abstracts: 24 hour blood pressure monitoring. Recommendations from the Chilean Society of Cardiology and Cardiovascular Surgery. The recommendations for blood pressure monitoring from the Chilean Society of Cardiology and Cardiovascular Surgery are analyzed. Emphasis is placed on indications for the procedure, according to different classes and causes of hypertension. Implications of different types of hypertension for prognosis and indications for adequate therapy are discussed.

Dislipidemia aterogénica en Latino América: prevalencia, causas y tratamiento / Atherogenic dislipidemia in Latin America: prevalence, causes and treatment

En las guías clínicas actuales, la dislipidemia aterogénica (DA) es una entidad escasamente atendida. Debido a las frecuentes alteraciones en los lípidos asociados a la DA en Latino América (LA), se organizó un grupo de expertos que se ha denominado Academia Latino Americana para el estudio de los Lípidos (ALALIP) para generar un documento con análisis de su prevalencia y ofrecer recomendaciones prácticas. Se utilizó la metodología Delphi modificada, con revisión comprensiva de la literatura con énfasis en aquellas publicaciones con implicaciones para LA. Subsecuentemente, se desarrollaron preguntas claves para ser discutidas. En LA no existe un estudio global sobre los factores de riesgo que representan a la totalidad de la población. El análisis sistemático de las encuestas nacionales de salud y de los estudios sistemáticos de cohorte muestran consistentemente una alta prevalencia de las anormalidades lipídicas que definen la DA. La concentración baja del colesterol unido a las lipoproteínas de alta densidad (C-HDL) varía entre 34,1% a 53,3% y la de triglicéridos (TG) elevados del 25,5% al 31,2%, con mayor prevalencia entre los hombres. Múltiples causas se han reconocidos, como alta ingesta de alimentos de mayor densidad calórica, contenido de colesterol, grasas trans, sedentarismo y cambios epigenéticos. La DA bien puede ser tratada con los cambios terapéuticos del estilo de vida (CTEV) con incremento en la actividad física, ejercicio regular y dieta baja en carbohidratos y alta en ácidos grasos poliinsaturados, tales como los ácidos grasos omega-3 como intervención primaria. De ser necesario, esta estrategia sera suplementada con terapia farmacológica como la monoterapia con estatinas o la combinación de fibratos/ácidos grasos omega-3. Las anormalidades lipídicas que definen la DA tienen una elevada prevalencia en LA; su interacción con un estilo de vida no saludable, herencia y cambios epigenéticos están ligados a sus posibles causas. La DA es una causa importante de riesgo cardiovascular residual (RCVR) que debe ser diagnosticada y tratada. Es importante y necesario diseñar un estudio global de factores de riesgo en LA para conocer la real prevalencia de la DA.

In the current clinical guidelines, atherogenic dyslipidemia (AD) is a poorly recognized entity. Due to the frequent lipid alterations associated with AD in Latin America (LA), we organized a group of experts named Latin American Academy for the study of Lipids (ALALIP), to generate a document for analyzing its prevalence and to offer practical recommendations. Using the Delphi methodology, we conducted a comprehensive literature review, with emphasis on those publications with implications for LA. Subsequently we developed key questions to be discussed. In LA there is no a global study on risk factors that represent the entire population. The systematic analysis of national health surveys and regional cohort studies showed a consistent high prevalence of the lipid abnormalities that define AD. Low high density lipoprotein cholesterol (HDL-C) ranges from 34.1% to 53.3% and elevated triglycerides (TG) from 25.5% to 31.2%, more prevalent in men. There are multiple causes: high consumption of foods with a high caloric density, cholesterol and trans fats, sedentary lifestyle and epigenetic changes. AD must be well treated with therapeutic changes in lifestyle with increased in physical activities, regular exercise and a diet with a low proportion of carbohydrates y rich in poliunsatured fatty acid, such as omega-3 fatty acid as primary intervention. If needed, this strategie must be supplemented with pharmacological therapies such as monotherapy with statins or a combination of fibrates plus omega-3.fatty acid. Lipid abnormalities that define AD have a high prevalence in LA; the interaction between non-healthy lifestyle, inheritance and epigenetic changes, possibly are its cause. AD is an important cause of cardiovascular residual risk (CVRR), that must be diagnosed and treated. It is important and neccesary to design a global study of risk factors in LA to know the true prevalence of AD.

Ateroesclerosis subclínica en población de riesgo cardiovascular bajo y moderado por Framingham chileno / Subclinical atherosclerosis among Chilean subjects classified as having a low cardiovascular Framingham risk

Background: Framingham risk score (FRS) has limitations and can underestimate risk. Carotid ultrasound to measure intima media thickness or plaques is recommended for cardiovascular risk assessment. Aim: To determine the prevalence of subclinical atherosclerosis in asymptomatic subjects classified as low and intermediate risk. Material and Methods: Cross-sectional study performed in subjects without cardiovascular disease. Cardiovascular risk was estimated using the Chilean FRS and the General Cardiovascular Disease FRS. Carotid ultrasound was performed in all subjects. We defined subclinical atherosclerosis as the presence of carotid plaque or intima media thickness greater than 75th percentile by gender and age. Results: We studied 203 subjects aged 47.2 ± 9.6 years (54% males). Mean intima media thickness was 0.62 ± 0.1 mm. An abnormal value was detected in 68 subjects (33%) and carotid plaques in 32 subjects (15.7%). Based on Chilean FRS, 96% were considered at low risk, 4% at intermediate, and none at high risk. In the low risk group the prevalence of abnormal intima media thickness and plaques was 40 and 14% respectively. Presence of plaques was more common in women than men (23 and 7% respectively, p < 0.01). According to the General Cardiovascular Disease FRS, 23% were at low, 39% at low intermediate and 28% at high intermediate risk. In the low risk group the prevalence of an abnormal intima media thickness was 34% and no subject had plaques. Conclusions: Carotid plaques were detected in Chilean subjects classified as having a low FRS risk. The underestimation of risk was higher in Chilean women.

Adherencia farmacológica y prevención secundaria cardiovascular: una de las principales barreras en el tratamiento de la enfermedad ateroesclerótica: posición del Departamento de Prevención Cardiovascular de SOCHICAR en el uso de la polipíldora en prevención secundaria / Adherence to pharmacologic treatment in secondary prevention of cardiovascular disease

This paper outlines the position of the Department of Cardiovascular Prevention from the Chilean Society of Cardiology regarding the use of the "polypill". The international and local evidence regarding the benefits of the polypill compared to conventional therapy is reviewed. The benefits and some limitations of the polypill are outlined, along with cost-effective considerations. The increased adherence to treatment and the better clinical results of this strategy are put forward. The used of the polypill in different groups of subjects, especially those recovered from a recent myocardial in-farction, is recommended for individual patients and in Chilean cardiovascular prevention programs from the Ministry of Health.

Prevalencia y determinantes de adherencia a terapia antihipertensiva en pacientes de la Región Metropolitana / Assessment of adherence to antihypertensive therapy

Background: Lack of adherence with medications is the main cause of antihypertensive treatment failure. Aim: To assess adherence to antihypertensive drugs and its determinants. Material and Methods: The Morinsky-Green questionnaire to determine treatment adherence was applied to 310 hypertensive patients from primary care centers, aged 60 ± 10 years (65% females) in treatment for 4 ± 1 months. Socio-demographic features, use of medications and quality of life using EQ5D questionnaire were also assessed. Results: Twenty percent of patients were diabetic and 19% were smokers. Fifty four percent were adherent to therapy. A higher age and being unemployed were associated with a higher compliance. The main reasons to justify the lack of adherence were forgetting to take the pills in 67% and adverse effects in 10%. Only diastolic pressure was lower in adherent patients, compared with their non-adherent counterparts (78 ± 12 and 81 ± 17 mmHg, respectively p < 0.01). Conclusions: Only half of hypertensive patients comply with their antihypertensive therapy.

Niveles de fosfolipasa A2 asociada a lipoproteína en sujetos sin enfermedad coronaria con riesgo cardiovascular variable / Association of lipoprotein-associated phospholipase activity A2 with cardiovascular risk factors

Background:Lipoprotein-associated phospholipase A2 (Lp-PLA2) is an inflammatory biomarker involved in atherosclerosis and directly associated with cardiovascular events. Aim: To determine Lp-PLA2 levels in asymptomatic subjects with differing cardiovascular risk. Material and Methods: We studied 152 subjects aged 46 ± 11 years (69 women). We recorded traditional cardiovascular risk factors, creatinine, ultrasensitive C-reactive protein, fibrinogen, fasting lipids, blood sugar and activity levels of Lp-PLA2. Cardiovascular risk was classified according to the number of risk factors of each subject (0,1-2 or ≥ 3 risk factors). Besides, we calculated global Framingham risk score. Results: The average Framingham score of participants was 6%. Twenty percent of participants had no risk factors, 46% had 1 or 2 and 34% had ≥ 3. Mean Lp-PLA2 levels were 185 ± 48 nmol/ml/min (201 ± 49 in men and 166 ± 38 in women). Lp-PLA2 correlated significantly (p < 0,05 for all) with non-HDL cholesterol, LDL, HDL, creatinine, waist circumference, body mass index and Framingham risk score. There was no correlation with blood sugar, C-reactive protein, fibrinogen or smoking status. Lp-PLA2 levels were significantly higher according to the number of risk factors: 0 factors: 163 ± 43, 1-2 factors: 185 ± 45 and ≥ 3 factors: 201 ± 47 nmol/ml/min, respectively. Linear regression analysis showed that the best predictor of Lp-PLA2 was non-HDL cholesterol (β= 0,74; p < 0,0001). Conclusions: Lp-PLA2 activity increased along with the number of cardiovascular risk factors and was correlated mainly with non -HDL cholesterol.

Grosor íntima media carotídeo y asociación con factores de riesgo cardiovascular tradicionales y metabólicos / Association of carotid intima-media thickness with traditional cardiovascular risk and metabolic factors

Background: Carotid intima-media thickness (IMT) is a surrogate marker of subclinical atherosderosis and is associated with cardiovascular risk factors (CVRF) Aim: To analyze the association of CVRF and metabolic factors (MF) with IMT, and if the clustering of these factors modify IMT. Material and Methods: Cross sectional study in 187 participants aged 46±10years (53% male) without CV disease. Weight, height, waist circumference (WC), blood pressure, fasting plasma glucose and lipid profile were measured. Abdominal obesity (AOb) was defined by ATP III criteria. Mean carotid IMT was measured at the far watt of the common carotid artery. The cutoff point for an abnormally high IMT was set at the 75th IMT percentile of the sample. Results: The 75th IMT percentile of the sample was 0.67 mm. In a multivariate analysis four factors were significantly related with a high IMT: age (odds ratio (OR): 5.3, confidence intervals (CI): 2.2-12.9), dyslipidemia (OR: 6.4 CI: 2.3-17.9), systolic blood pressure (OR: 2.9, CI: 1.2-7.1) and AOb (OR: 2.9 (IC: 1.1-7.2). The presence of Oto 4 of these factors was associated with an IMT increment from 0.54 to 0.71 mm (p < 0,001). Conclusions: In this sample dyslipidemia, systolic blood pressure and abdominal obesity were the main predictors of a high IMT.