No Love Lost for Intravenous Labetalol Infusions: Risks of Prolonged Use

Labetalol is a beta blocker with potent antihypertensive effects, and it may be administered orally or intravenously. The latter feature makes it especially useful for the acute management of elevated blood pressure but prolonged infusions can result in hemodynamic collapse. In this entry, two cases are discussed and recommendations are made for the appropriate management of continuous labetalol infusions.

Carvedilol and Alpha Blockade: Does it Matter in the Long Run?

Of the three beta blockers recommended in patients with heart failure with reduced ejection fraction, only carvedilol exerts antagonist effects at α1 receptors. However, its benefits in heart failure are presumably a result of myocardial β1 receptor inhibition, as the β1-selective agents bisoprolol and metoprolol succinate confer similar improvements in morbidity and mortality. So what’s the significance of α1 receptor blockade?