October 25, 2011European Journal of Heart Failure
Right and Left Bundle Branch Block as Predictors of Long-Term Mortality Following Myocardial Infarction
Why the study?
Does the presence of right or left bundle branch block predict long-term mortality in patients following myocardial infarction?
Population
6,676 consecutive patients presenting with an acute myocardial infarction, hospitalized at 27 centres in…
Comparison
Presence of right bundle branch block or left… vs Patients without bundle branch block (BBB)
Design
Cohort
Follow-up
minimum 15 years
Authors
Discussion
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Member takes
Implication
Findings should not yet alter post-MI risk stratification; leaves open prospective validation of differential BBB prognostic value by LV function.
Structured PICO
Does the presence of right or left bundle branch block predict long-term mortality in patients following myocardial infarction?
P
Population
6,676 consecutive patients presenting with an acute myocardial infarction (MI), hospitalized at 27 centres in Denmark.
I
Intervention
Presence of right bundle branch block (RBBB) or left bundle branch block (LBBB)
C
Comparator
Patients without bundle branch block (BBB)
O
Outcome
Long-term mortality during a minimum follow-up of 15 yearshard clinical
Following myocardial infarction, RBBB is a predictor of increased long-term mortality in patients with reduced LV systolic function, whereas LBBB predicts mortality in those with preserved LV systolic function.
Cite This Study
Lewinter et al. (2011) studied this question.