Reference ventricular dimensions and function parameters by cardiovascular magnetic resonance in highly trained Caucasian athletes.

BACKGROUND: Data regarding cardiovascular magnetic resonance (CMR) reference values in athletes have not been well determined yet. Using CMR normal reference values derived from the general population may be misleading in athletes and may have clinical implications. AIMS: To determine reference ventricular dimensions and function parameters and ratios by CMR in high performance athletes. METHODS: Elite athletes and age- and gender-matched sedentary healthy controls were included. Anatomical and functional variables, including biventricular volumes, mass, systolic function, wall thickness, sphericity index and longitudinal function were determined by CMR. RESULTS: A total of 148 athletes (29.2 ± 9.1 years; 64.8% men) and 124 controls (32.1 ± 10.5 years; 67.7% men) were included. Left ventricular (LV) mass excluding papillary muscles was 67 ± 13 g/m2 in the control group and increased from 65 ± 14 g/m2 in the low intensity sport category to 83 ± 16 g/m2 in the high cardiovascular demand sport category; P < 0.001. Regarding right ventricular (RV) mass, the data were 20 ± 5, 31 ± 6, and 38 ± 8 g/m2, respectively; P < 0.001. LV and RV volumes, and wall thickness were higher in athletes than in the control group, and also increased with sport category. However, LV and RV ejection fractions were similar in both groups. LV and RV dimensions, wall thickness and LV/RV ratios reference parameters for athletes are provided. CONCLUSIONS: LV and RV masses, volumes, and wall thicknesses are higher in athletes than in sedentary subjects. Specific CMR reference ranges for athletes are provided and can be used as reference levels, rather than the standard upper limits used for the general population to exclude cardiomyopathy.

Ejercicio físico y salud / Physical Exercise and Health

La práctica regular de ejercicio físico es una recomendación establecida para prevenir y tratar los principales factores de riesgo cardiovascular modificables, como la diabetes mellitus, la hipertensión y la dislipemia. Realizar actividad física de intensidad moderada durante un mínimo de 30 min 5 días por semana o de intensidad alta durante un mínimo de 20 min 3 días por semana mejora la capacidad funcional y se asocia a reducciones en la incidencia de enfermedad cardiovascular y mortalidad. El ejercicio físico induce adaptaciones fisiológicas cardiovasculares que mejoran el rendimiento físico, y solo en casos extremos pueden conducir a un riesgo aumentado de complicaciones asociadas al ejercicio físico. La incidencia de muerte súbita o complicaciones graves durante la práctica de ejercicio físico es muy baja, se concentra en las personas con cardiopatías o con adaptación cardiaca muy patológica al ejercicio y la mayoría de estos casos los pueden detectar unidades de cardiología o profesionales bien instruidos (AU)

Regular physical exercise is an established recommendation for preventing and treating the main modifiable cardiovascular risk factors, such as diabetes mellitus, hypertension, and dyslipidemia. Performing physical activity of moderate intensity for a minimum of 30 min 5 days a week or of high intensity for a minimum of 20 min 3 days a week improves functional capacity and is associated with reductions in the incidence of cardiovascular disease and mortality. Physical exercise induces physiological cardiovascular adaptations that improve physical performance, and only in extreme cases can these adaptations lead to an increased risk of physical exercise-associated complications. The incidence of sudden death or serious complications during physical exercise is very low and is concentrated in people with heart diseases or with pathological cardiac adaptation to exercise. Most of these cases can be detected by cardiology units or well-trained professionals (AU)

Physical exercise and health.

Regular physical exercise is an established recommendation for preventing and treating the main modifiable cardiovascular risk factors, such as diabetes mellitus, hypertension, and dyslipidemia. Performing physical activity of moderate intensity for a minimum of 30 min 5 days a week or of high intensity for a minimum of 20 min 3 days a week improves functional capacity and is associated with reductions in the incidence of cardiovascular disease and mortality. Physical exercise induces physiological cardiovascular adaptations that improve physical performance, and only in extreme cases can these adaptations lead to an increased risk of physical exercise-associated complications. The incidence of sudden death or serious complications during physical exercise is very low and is concentrated in people with heart diseases or with pathological cardiac adaptation to exercise. Most of these cases can be detected by cardiology units or well-trained professionals.

Las concentraciones bajas de colesterol unido a las lipoproteínas de alta densidad se asocian de manera independiente a enfermedad coronaria aguda en pacientes que ingresan por dolor torácico / Low levels of high-density lipoproteins cholesterol are independently associated with acute coronary heart disease in patients hospitalized for chest pain

Introducción y objetivos. El papel las lipoproteínas de alta densidad en la estratificación de riesgo en pacientes con dolor torácico no está bien definido. El objetivo de este estudio es conocer la contribución relativa del perfil lipídico al riesgo de padecer síndrome coronario agudo de los pacientes ingresados por dolor torácico en una planta de cardiología. Métodos. Incluimos todos los ingresos consecutivos no programados en planta de cardiología durante 15 meses y realizamos seguimiento al año. Resultados. Se incluyó a 959 pacientes, 457 (47,7%) diagnosticados de dolor torácico no isquémico, 355 (37%) de síndrome coronario agudo sin elevación del ST y 147 (15,3%) de síndrome coronario agudo con elevación del ST. El 54,6% de los pacientes presentaron cifras de lipoproteínas de alta densidad < 40mg/dl y la prevalencia fue más elevada entre los pacientes con síndrome coronario agudo (el 69,4 frente al 30,6%; p<0,01). Se observó mayor presencia de síndrome coronario agudo a menores cifras medias de lipoproteínas de alta densidad. Edad, tabaquismo activo, diabetes mellitus, glucemia basal > 100mg/dl y concentraciones de lipoproteínas de alta densidad < 40mg/dl se asociaron independientemente a la presencia de síndrome coronario agudo, el factor con mayor asociación (odds ratio=4,11; intervalo de confianza del 95%, 2,87-5,96). El análisis de supervivencia determinó que los pacientes con síndrome coronario agudo, frente a dolor torácico no isquémico, asociaron un riesgo significativamente superior de mortalidad por cualquier causa, así como por causa cardiovascular. Conclusiones. Las concentraciones bajas de colesterol unido a las lipoproteínas de alta densidad (≤ 40mg/dl) se asociaron de manera independiente a diagnóstico de síndrome coronario agudo en pacientes ingresados por dolor torácico, con una relación inversa significativa entre los valores más bajos de lipoproteínas de alta densidad y el diagnóstico de síndrome coronario agudo (AU)

Introduction and objectives. The role of high-density lipoproteins in the context of acute chest pain has not been well characterized. The objective of this study was to determine the relative contribution of lipid profile to the risk of acute coronary syndrome in patients admitted to a cardiology ward for chest pain. Methods. We included all consecutive admissions in a single cardiology department over a period of 10 months and 1-year follow-up was performed. Results. In total, 959 patients were included: 457 (47.7%) were diagnosed with non-ischemic chest pain, 355 (37%) with non-ST-elevation acute coronary syndrome, and 147 (15.3%) with ST-elevation acute coronary syndrome. Prevalence of high-density lipoproteins <40mg/dL was 54.6%, and was higher in patients with acute coronary syndrome (69.4% vs 30.6%; P<.01). The prevalence of acute coronary syndrome increased with reductions in mean high-density lipoproteins. Age, active smoking, diabetes, fasting glucose >100mg/dL, and high-density lipoproteins <40mg/dL were independently associated with acute coronary syndrome, and low high-density lipoproteins was the main associated factor (odds ratio, 4.11; 95% confidence interval, 2.87-5.96). Survival analysis determined that, compared with non-ischemic chest pain, the presence of acute coronary syndrome was associated with significantly greater risk of all-cause and cardiovascular mortality. Conclusions. Low levels of high-density lipoproteins cholesterol (≤40mg/dL) were independently associated with a diagnosis of acute coronary syndrome in patients hospitalized for chest pain, with an inverse relationship between lower levels of high-density lipoproteins and prevalence of acute coronary syndrome (AU)

Low levels of high-density lipoproteins cholesterol are independently associated with acute coronary heart disease in patients hospitalized for chest pain.

INTRODUCTION AND OBJECTIVES: The role of high-density lipoproteins in the context of acute chest pain has not been well characterized. The objective of this study was to determine the relative contribution of lipid profile to the risk of acute coronary syndrome in patients admitted to a cardiology ward for chest pain. METHODS: We included all consecutive admissions in a single cardiology department over a period of 10 months and 1-year follow-up was performed. RESULTS: In total, 959 patients were included: 457 (47.7%) were diagnosed with non-ischemic chest pain, 355 (37%) with non-ST-elevation acute coronary syndrome, and 147 (15.3%) with ST-elevation acute coronary syndrome. Prevalence of high-density lipoproteins <40 mg/dL was 54.6%, and was higher in patients with acute coronary syndrome (69.4% vs 30.6%; P<.01). The prevalence of acute coronary syndrome increased with reductions in mean high-density lipoproteins. Age, active smoking, diabetes, fasting glucose >100 mg/dL, and high-density lipoproteins <40 mg/dL were independently associated with acute coronary syndrome, and low high-density lipoproteins was the main associated factor (odds ratio, 4.11; 95% confidence interval, 2.87-5.96). Survival analysis determined that, compared with non-ischemic chest pain, the presence of acute coronary syndrome was associated with significantly greater risk of all-cause and cardiovascular mortality. CONCLUSIONS: Low levels of high-density lipoproteins cholesterol (≤40 mg/dL) were independently associated with a diagnosis of acute coronary syndrome in patients hospitalized for chest pain, with an inverse relationship between lower levels of high-density lipoproteins and prevalence of acute coronary syndrome.

Burden of systemic hypertension in patients admitted to cardiology hospitalization units.

Hypertension is 1 of the most prevalent cardiovascular risk factors; nevertheless, some studies have reported that the antecedent of hypertension does not impair prognosis in patients with established cardiovascular disease. The objective of this study was to describe the impact of hypertension on readmission and 1-year mortality in patients admitted to a single cardiology hospitalization unit. All consecutive hospitalizations in a single cardiology department through 10 months were included, and 1-year follow-up was performed. Clinical antecedents, risk factors, and main discharge diagnoses were collected. A total of 1,007 patients were included (mean age 71.1 ± 13.5 years). The antecedent of hypertension was present in 69.0%, and these patients had older mean age and higher prevalence of risk factors and previous cardiovascular disease. No differences in hospital discharge main diagnoses were observed according to the antecedent of hypertension. During a mean follow-up period of 404.82 ± 122.2 days, patients with hypertension had higher rates of rehospitalization for cardiac causes (31.1% vs 17.9%, p = 0.01) and of total (17.4% vs 9.3%, p <0.01) and cardiovascular (13.9% vs 5.9%, p <0.01) mortality. Multivariate analysis identified the antecedent of hypertension as an independent risk factor for cardiovascular readmission (hazard ratio 1.46, 95% confidence interval 1.10 to 1.98) and the combined end point of readmission or mortality (hazard ratio 1.45, 95% confidence interval 1.12 to 1.88); no independent association was observed for total mortality. In conclusion, hypertension was present in most patients admitted to a cardiology unit, and they had higher rates of rehospitalization and mortality at 1-year follow-up.