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<p><b>New page</b></p><div>[[File:Arbutamine.png|thumb|{{PAGENAME}}]]<br>'''Arbutamine''' is a [[pharmacology|pharmacological]] agent primarily used in [[cardiology]] for stress testing. It is a synthetic [[catecholamine]] that selectively stimulates [[beta-1 adrenergic receptors]], thereby increasing heart rate, contractility, and blood pressure. <br />
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==Pharmacodynamics==<br />
Arbutamine's primary mechanism of action is the stimulation of [[beta-1 adrenergic receptors]]. This stimulation leads to an increase in [[heart rate]], [[myocardial contractility]], and [[blood pressure]]. The drug's effects are dose-dependent, with higher doses leading to more pronounced cardiovascular effects. <br />
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==Pharmacokinetics==<br />
Arbutamine is administered intravenously and has a rapid onset of action. It is metabolized in the liver by [[catechol-O-methyltransferase]] (COMT) and [[monoamine oxidase]] (MAO), and its metabolites are excreted in the urine.<br />
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==Clinical Use==<br />
Arbutamine is primarily used in cardiology as a pharmacological stress agent for [[myocardial perfusion imaging]]. It is particularly useful in patients who are unable to exercise adequately for a traditional exercise stress test. <br />
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==Side Effects==<br />
Common side effects of Arbutamine include [[palpitations]], [[chest pain]], and [[dyspnea]]. Less common side effects can include [[nausea]], [[headache]], and [[dizziness]]. Due to its cardiovascular effects, Arbutamine should be used with caution in patients with severe [[cardiac disease]].<br />
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==See Also==<br />
* [[Beta-1 adrenergic receptor]]<br />
* [[Catecholamine]]<br />
* [[Myocardial perfusion imaging]]<br />
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[[Category:Pharmacology]]<br />
[[Category:Cardiology]]<br />
[[Category:Drugs]]<br />
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