Shock which persists after adequate fluid vol replacement; severe hypotension.
Dosage/Direction for Use
IV infusion Dilute 4 mL (4 mg) in 1,000 mL 5% dextrose soln. Infusion rate: Initially 2-3 mL/min. Maintenance: 0.5-1 mL/min.
Hypotension from hypovolemia except as emergency measure to maintain coronary & cerebral perfusion until vol can be replaced. Mesenteric or peripheral vascular thrombosis unless it is a lifesaving procedure. During anesth w/ cyclopropane or halothane (risk of ventricular arrhythmias).
HTN, asthma. Inj into a large vein particularly an antecubital vein. Avoid veins in legs of elderly. Pregnancy & lactation. Childn.