Prognostic value of exercise stress echocardiography in patients with left bundle branch block.
| Autor: | Vasconcelos Fde L; Departamento de Medicina, Universidade Federal de Sergipe, São Cristovão, SE, Brazil., Santos BF, Santana Nde O, Faro GB, Rocha Rde O, Leal VV, Barreto-Filho JA, Sousa AC, Oliveira JL |
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| Jazyk: | English; Portuguese |
| Zdroj: | Arquivos brasileiros de cardiologia [Arq Bras Cardiol] 2011 Dec; Vol. 97 (6), pp. 478-84. Date of Electronic Publication: 2011 Oct 14. |
| DOI: | 10.1590/s0066-782x2011005000098 |
| Abstrakt: | Background: The literature lacks studies about the prognostic value of exercise stress echocardiography (ESE) in patients with complete left bundle branch block (LBBB) of the bundle of His. Objective: To assess the prognostic value of ESE in patients with LBBB. Methods: This is a retrospective cohort that evaluated 135 patients with LBBB, from January 2001 to October 2009, of which 37.8% were men, mean age 63.6 ± 11.5 years submitted to ESE according to Bruce protocol on a treadmill. Cox regression was used, considering these outcomes: death from all causes and from cardiac events, defined as acute myocardial infarction (AMI), percutaneous angioplasty (PA), coronary artery bypass grafting (CABG) and death from cardiac causes. Results: Positive ESE was observed in 42 patients (31%). The mean follow-up was 45.8 ± 4.7 months. During this period, there were 9 deaths from all causes and 9 cardiac events (3 deaths from cardiac causes, 3 myocardial infarctions, 2 PA and one CABG). The mortality rate from all causes during five years was 16.1% in the group with positive ESE and 2.5% in the group with negative test (p = 0.171), whereas the rate of cardiac events in the same period was 15.1% for the positive ESE and 1.6% in the group with negative test (p = 0.009). Conclusion: ESE showed to be a predictor of cardiac events in patients with LBBB. |
| Databáze: | MEDLINE |
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