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After taking an overdose of propranolol, a 35-year-old woman

 
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meenaxi
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PostPosted: Tue Nov 03, 2009 1:17 pm    Post subject: After taking an overdose of propranolol, a 35-year-old woman

After taking an overdose of propranolol, a 35-year-old woman develops sinus bradycardia and syncope. In order to stimulate the same second messenger system that is activated by β-adrenergic receptors, which of the following drugs will be most effective to increase her heart rate?

A ) ADH (vasopressin)
B ) Atrial natriuretic peptide
C ) Clonidine
D ) Glucagon
E ) Phenylephrine


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meenaxi
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PostPosted: Tue Nov 03, 2009 1:17 pm    Post subject:

Its D .glucagon=Gs (stumulation beta 1,2 )=stimulation adynyle cyclase


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