A 38 year old with a history of ventricular dysrhythmias and…

A 38 year old with a history of ventricular dysrhythmias and a pacemaker presents with cardiogenic shock. In the past, he’s has dysrhythmias with drugs that stimulate beta 1 receptors. In report, you learn he’s been going in an out of ventricular tachycardia in the ER. The physician decides to order a drug that will increase systemic vasoconstriction, but won’t act on the beta1 receptors to increase contractility. Which drug can he choose?