Ethnic differences in carotid and left ventricular hypertrophy.
J Hypertens
; 20(3): 539-43, 2002 Mar.
Article
em En
| MEDLINE
| ID: mdl-11875323
ABSTRACT
OBJECTIVES:
Afro-Caribbean subjects have a higher prevalence of hypertension, a lower prevalence of ischaemic heart disease and a higher premature mortality compared to White Europeans. Left ventricular hypertrophy (LVH) is also more prevalent in Afro-Caribbeans even at similar levels of blood pressure. It is widely believed that carotid artery intima-media thickening (IMT) represents an early marker for the development of atheroma, and carotid IMT and LVH are associated in White populations. Whether the relationship between carotid IMT and LVH is similar in Black subjects is unknown.METHODS:
Thirty-eight subjects were studied using carotid and femoral ultrasonography and echocardiography; 19 Afro-Caribbean and 19 White European subjects were matched for age, sex and mean 24 h systolic blood pressure.RESULTS:
The Afro-Caribbean group had a significantly greater left ventricular mass index (LVMI) compared to the White European 136.4 +/- 6.1 versus 112.4 +/- 6.2 g/m2, P < 0.01. However, carotid IMT, carotid diameter, femoral IMT and femoral diameter were similar between the groups 0.75 +/- 0.02 versus 0.77 +/- 0.04 mm, 6.54 +/- 0.15 versus 6.56 +/- 0.16 mm, 0.66 +/- 0.03 versus 0.68 +/- 0.03 mm and 8.40 +/- 0.33 versus 8.25 +/- 0.23 mm, respectively.CONCLUSIONS:
Afro-Caribbean subjects with similar blood pressures have similar mean carotid and femoral IMTs compared to White Europeans, in spite of marked differences in LVMI. Whether this reflects a discrepancy in the degree of cardiovascular risk for similar levels of LVMI or whether this is a reflection of an altered pattern of target organ damage associated with hypertension in Afro-Caribbean subjects is unclear.
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Base de dados:
MEDLINE
Assunto principal:
Ecocardiografia
/
Artérias Carótidas
/
Hipertrofia Ventricular Esquerda
/
População Negra
/
População Branca
Tipo de estudo:
Risk_factors_studies
Limite:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
País como assunto:
Europa
Idioma:
En
Ano de publicação:
2002
Tipo de documento:
Article