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Question: Indicate the drug, which is a direct-acting both alfa- and beta-receptor agonist:

Norepinephrine
Methoxamine
Isoproterenol
Ephedrine

Answer: Norepinephrine



Category Pharmacology Interview Questions & Answers - Exam Mode / Learning Mode
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Question: Indicate the drug, which is a direct-acting both alfa- and beta-receptor agonist:

Norepinephrine
Methoxamine
Isoproterenol
Ephedrine

Answer:

Norepinephrine Source: CoolInterview.com



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Related Questions
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Which of the following agents is an alfa1 alfa2 beta1 beta2 receptor agonist?

Methoxamine
Albuterol
Epinephrine
Norepinephrine
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Indicate the direct-acting sympathomimetic, which is an alfa1 alfa2 beta1 receptor agonist:

Isoproterenol
Ephedrine
Dobutamine
Norepinephrine
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Which of the following agents is an alfa1-selective agonist?

Norepinephrine
Methoxamine
Ritodrine
Ephedrine
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Indicate the alfa2-selective agonist:

Xylometazoline
Epinephrine
Dobutamine
Methoxamine
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Which of the following agents is a nonselective beta receptor agonist?

Norepinephrine
Terbutaline
Isoproterenol
Dobutamine
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Indicate the beta1-selective agonist:

Isoproterenol
Dobutamine
Metaproterenol
Epinephrine
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Which of the following sympathomimetics is a beta2-selective agonist?

Terbutaline
Xylometazoline
Isoproterenol
Dobutamine
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Indicate the indirect-acting sympathomimetic agent:

Epinephrine
Phenylephrine
Ephedrine
Isoproterenol
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Epinephrine produces all of the following effects EXCEPT:

Positive inotropic and chronotropic actions on the heart (beta1 receptor)
Increase peripheral resistance (alfa receptor)
Predominance of alfa effects at low concentration
Skeletal muscle blood vessel dilatation (beta2 receptor)
View Answer
Epinephrine produces all of the following effects EXCEPT:

Decrease in oxygen consumption
Bronchodilation
Hyperglycemia
Mydriasis
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Epinephrine is used in the treatment of all of the following disorders EXCEPT:

Bronchospasm
Anaphylactic shock
Cardiac arrhythmias
Open-angle glaucoma
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Compared with epinephrine, norepinephrine produces all of the following effects EXCEPT:

Similar effects on beta1 receptors in the heart and similar potency at an alfa receptor
Decrease the mean pressure below normal before returning to the control value
Significant tissue necrosis if injected subcutaneously
Increase both diastolic and systolic blood pressure
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Norepinephrine produces:

Vasoconstriction
Vasodilatation
Bronchodilation
Decresed potassium concentration in the plasma
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Which of the following direct-acting drugs is a relatively pure alfa agonist, an effective mydriatic and decongestant and
can be used to raise blood pressure?

Epinephrine
Norepinephrine
Phenylephrine
Ephedrine
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Characteristics of methoxamine include all of the following EXCEPT:

It is a direct-acting alfa1-receptor agonist
It increases heart rate, contractility and cardiac output
It causes reflex bradycardia
It increases total peripheral resistance
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Which of the following agents is an alfa2-selective agonist with ability to promote constriction of the nasal mucosa?

Xylometazoline
Phenylephrine
Methoxamine
Epinephrine
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Indicate the sympathomimetic, which may cause hypotension, presumably because of a clonidine-like effect:

Methoxamine
Phenylephrine
Xylometazoline
Isoproterenol
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Isoproterenol produces all of the following effects EXCEPT:

Increase in cardiac output
Fall in diastolic and mean arterial pressure
Bronchoconstriction
Tachycardia
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Characteristics of dobutamine include all of the following EXCEPT:

It is a relatively beta1-selective synthetic catecholamine
It is used to treat bronchospasm
It increases atrioventricular conduction
It causes minimal changes in heart rate and systolic pressure
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Characteristics of salmeterol include all of the following EXCEPT:

It is a potent selective beta2 agonist
It causes uterine relaxation
It stimulates heart rate, contractility and cardiac output
It is used in the therapy of asthma
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