Effect of Beta-Blockers on Mortality after Myocardial Infarction in Adults with COPD

Jennifer Quint, clinical lecturer in epidemiology at the London School of Hygiene and Tropical Medicine, and Liam Smeeth, professor of clinical epidemiology at the London School of Hygiene and Tropical Medicine, discuss their BMJ study of UK COPD patients who have experienced a first myocardial infarction and the impact of beta-blocker therapy on mortality.