Arbutamine is a short-acting, potent and nonselective β-adrenoceptor agonist that increases heart rate, cardiac contractility, and systolic blood pressure[1]. Arbutamine is a catecholamine for a pharmacological cardiac stress agen[2].
Arbutamine (i.v.; 5, 10, 50, 100, and 250 ng/kg/min) increases mean heart rate, peak positive left ventricular pressure and its first time-derivative, and normal-zone myocardial thickening in 8 open-chest dogs (mean weight, 26.91 kg).
[1]. Ruiz M, et al. Arbutamine stress perfusion imaging in dogs with critical coronary artery stenoses: (99m)Tc-sestamibi versus (201)Tl. J Nucl Med. 2002 May;43(5):664-70. [2]. Nagarajan R, et al. A novel catecholamine, arbutamine, for a pharmacological cardiac stress agent. Cardiovasc Drugs Ther. 1996 Mar;10(1):31-8.