RESUMEN
Echocardiography was performed in 325 men and 398 women in the framework of a population survey of inhabitants of Tallinn aged 35 to 59 years in 1999-2001. Left ventricular geometry was analyzed according to generally recognized four types. Prevalence of concentric hypertrophy was similar in men and women (7.7% and 9.1%, respectively). In all age groups prevalence of eccentric hypertrophy in women was 4-10-fold higher than in men (33.3 and 4.9%, respectively). Concentric remodeling was also more frequent in women than in men (9.5 and 5.5%; respectively, p<0.05). Regardless of sex and age, concentric hypertrophy was never found in participants with normal blood pressure. In hypertensives there was a tendency for age-related increase of prevalence of concentric hypertrophy: the latter was higher in women than in men (39.1% and 25.5%; respectively, p<0.05). In examinees with body mass index (BMI) <30 this type was rare. In obese persons its frequency increased with age in both sexes reaching 26.5% in men and 21.2% in women (p<0.05). Prevalence of eccentric hypertrophy in men increased with age, especially in the presence of hypertension and obesity. In men the prevalence of concentric remodeling was not related to BMI; it was significantly more often found in older age groups and in hypertensives. In women the prevalence of eccentric hypertrophy and concentric remodeling was not related to age, hypertension and BMI. The frequency of normal geometry decreased with age in both sexes.
Asunto(s)
Hipertrofia Ventricular Izquierda/patología , Hipertrofia Ventricular Izquierda/fisiopatología , Remodelación Ventricular , Adulto , Factores de Edad , Presión Sanguínea/fisiología , Peso Corporal/fisiología , Estonia/epidemiología , Femenino , Ventrículos Cardíacos/diagnóstico por imagen , Ventrículos Cardíacos/patología , Ventrículos Cardíacos/fisiopatología , Humanos , Hipertrofia Ventricular Izquierda/epidemiología , Masculino , Persona de Mediana Edad , Obesidad/patología , Obesidad/fisiopatología , Vigilancia de la Población , Factores Sexuales , UltrasonografíaRESUMEN
AIM: To assess relationship between QT dispersion, hypertension, and different variants of left ventricular geometry (concentric or eccentric hypertrophy, concentric remodeling). MATERIAL AND METHODS: Blood pressure measurement, electro- and echocardiography were used in the study of a random sample of Tallinn population (321 men and 396 women) aged 35-59 years. Corrected QT dispersion (QT(c)D) equal to or exceeding 70 ms was considered increased. RESULTS: Increase of QT(c)D was associated with left ventricular hypertrophy, especially with its concentric variant. QT(c)D prolongation was significantly more frequent in subjects with hypertension.
Asunto(s)
Ventrículos Cardíacos/fisiopatología , Hipertensión/fisiopatología , Hipertrofia Ventricular Izquierda/fisiopatología , Adulto , Ecocardiografía , Electrocardiografía , Femenino , Humanos , Hipertensión/complicaciones , Hipertensión/diagnóstico , Hipertrofia Ventricular Izquierda/diagnóstico , Hipertrofia Ventricular Izquierda/etiología , Masculino , Persona de Mediana Edad , Muestreo , Remodelación Ventricular/fisiologíaRESUMEN
In a framework of a population study in Tallinn triple blood pressure measurements, electro- and echocardiography were carried out in 398 women (82.6% of all participants) aged 35-59. Left ventricular hypertrophy (left ventricular mass >or=198 g, left ventricular mass/height ratio >or=121 g/m, left ventricular mass/body surface area ratio >or=120 g/m2) was found in 43% of these women. Distribution of variants of left ventricular remodeling was as follows: concentric hypertrophy - 9.1%, eccentric hypertrophy - 33.9%, concentric remodeling - 9.5%, normal myocardial geometry - 47.5%. Only concentric hypertrophy was associated with elevated blood pressure and obesity frequency of both of which increased with age.