Term
| T or F dobutamine is selective for B1- adrenoceptor |
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Definition
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Term
| T or F ephedrine is selective for the alpha-adrenoceptor |
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Definition
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Term
| What drug is alpha2 selective that decreases blood presusure- isoproterenol or clonidine |
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Definition
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Term
| what is the major condition treated with terbutaline and albuterol and what receptors do they work on? |
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Definition
| bronchial asthma/ B2 receptors |
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Term
| alpha2 or B1 sympathomimetcs (adrenergic agonists) increase cardiac output |
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Definition
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Term
| Do the alpha1 agonists contract or dialate smooth muscle |
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Definition
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Term
| does phenylephrine act on mainly alpha 1 or 2 and what is its theraputic use |
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Definition
| alpha1- nasal decongestant |
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Term
| does dobutamine affect B1 or 2 receptors more and what affect does it have |
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Definition
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Term
| T or F at low doses dopamine causes renal and coronary vasoconstriction and activates B1 receptors in heart |
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Definition
| False- it causes renal and coronary vasodilation |
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Term
| what drug is a indirect-acting sympathomimetic abused because of its psychostimulant abilities |
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Definition
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Term
| What affects do Beta-adrenoceptor antagonists have on vascular system |
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Definition
| block sympathetic stimulation- leads to lower HR, BP |
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Term
| T or F phentolamine is a nonselective, competitive alpha-adrenoceptor antagonist |
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Definition
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Term
| What two conditions is prazosin used to treat and what is its class? |
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Definition
| alpha1-adrenoceptor antagonist used to treat hypertension and prostatic hypertrophy |
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Term
| What class does timolol fall into |
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Definition
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Term
| what is special about labetalol |
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Definition
| it blocks both beta and alpha receptors |
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Term
| what is the main adverse reaction of nonselective B-adrenoceptor antagonists |
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Definition
| Beta2 block= bronchial constriction. This is bad in asthma/ COPD patients |
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Term
| T or F phentolamine is a nonselective alpha agonist |
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Definition
| False- it is a nonselective alpha antagonist |
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