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When administered at low doses it predominantly stimulates the ________________ 1 receptors and causes vasodilation. When moderate doses are administered it stimulates the beta 1 receptors and improves myocardial contractility and cardiac output. At high doses, has alpha 1 activity and causes vasoconstriction.

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1. When administered at low doses it predominantly stimulates the ________________ 1 receptors and causes vasodilation. When moderate doses are administered it stimulates the beta 1 receptors and improves myocardial contractility and cardiac output. At high doses, has alpha 1 activity and causes vasoconstriction.





 
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