SciELO - Scientific Electronic Library Online

 
vol.84 issue3Comparative study of the results of coronary artery bypass grafting and angioplasty for myocardial revascularization in patients with equivalent multivessel diseaseEffects of the prolonged inhibition of the angiotensin-converting enzyme on the morphological and functional characteristics of left ventricular hypertrophy in rats with persistent pressure overload author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Arquivos Brasileiros de Cardiologia

Print version ISSN 0066-782X

Abstract

MADY, Charles et al. Relation between left atrial dimension and exercise capacity in endomyocardial fibrosis. Arq. Bras. Cardiol. [online]. 2005, vol.84, n.3, pp. 222-224. ISSN 0066-782X.  http://dx.doi.org/10.1590/S0066-782X2005000300005.

OBJECTIVE: To assess whether exercise capacity is related to left atrial dimension (LAD) in patients with biventricular endomyocardial fibrosis. METHODS: This study comprised 38 patients in sinus rhythm, with a mean age of 37.5 ± 11.5 years (range, 11 to 59 years), 25 of whom were women. They were divided into 2 groups according to the NYHA functional class on hospital admission as follows: group A (12 patients) and group B (26 patients). All patients underwent cardiopulmonary exercise testing to determine their maximum oxygen consumption (VO2 max), and their left atrial dimension was determined on echocardiography. RESULTS: The VO2max values for groups A and B were 21.8 ± 4.8 mL.kg-1.min-1 and 13.7 ± 3.5 mL.kg-1.min-1, respectively, and the left atrial dimensions were 3.7±0.7cm and 4.4±0.7cm for groups A and B, respectively. A significant and inverse correlation was found between VO2max and LAD in the groups studied. CONCLUSION: The increase in left atrial dimension is associated with impairment in exercise capacity in patients with endomyocardial fibrosis. Our findings support the use of left atrial dimension to estimate a more complex and difficult to assess index of functional capacity, such as VO2max.

Keywords : left atrial dimension; exercise capacity; endomyocardial fibrosis.

        · abstract in Portuguese     · text in English | Portuguese     · pdf in English | Portuguese