It has been assumed that β-AR antagonists (β-blockers) have a direct favorable influence on the heart, but our results ... Hjalmarson A, Goldstein S, Fagerberg B et al.; MERIT-HF Study Group.

B 1-selective antagonism in symptomatic HF patients. Whether one chooses to switch a hypertension or post-MI patient who now has clinical HF from an earlier-generation β blocker to carvedilol or ...