Questions and Answers
Which category of drugs increases the sympathetic nervous system response?
Drugs that increase the sympathetic nervous system response
Which type of adrenergic agonist directly stimulates receptors?
Direct-acting non-selective agonist
Which drug is a beta-adrenergic agonist?
Dobutamine
Which type of adrenergic receptor agonist is used as a pressor agent to treat shock?
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Which drug is an example of an indirect-acting adrenergic agonist?
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Which receptor agonist is used for the treatment of nasal congestion?
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What is the net effect of Dobutamine on the heart?
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Which drug is a selective β2 receptor agonist used for bronchodilation?
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Which drug promotes the release of norepinephrine via reverse action of plasma membrane transporter Na+?
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Which sympatholytic drug is used for the treatment of pheochromocytoma?
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Which receptor antagonist is used for benign prostatic hypertrophy?
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What is the clinical use of Methyldopa?
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What is the main use of Mydriasis?
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What is the net effect of dopamine in low dose?
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What is the main use of Terbutaline?
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Study Notes
Adrenergic Agonists
- Adrenergic agonists increase the sympathetic nervous system response.
Direct-Acting Adrenergic Agonists
- Directly stimulate receptors, examples include alpha-adrenergic agonists and beta-adrenergic agonists.
- Dobutamine is a beta-adrenergic agonist.
- Alpha-adrenergic receptor agonists are used as pressor agents to treat shock.
- Salbutamol is a selective β2 receptor agonist used for bronchodilation.
Indirect-Acting Adrenergic Agonists
- Increase the release of norepinephrine, an example is Amphetamine.
- Promote the release of norepinephrine via reverse action of plasma membrane transporter Na+.
Treatment of Specific Conditions
- Phenylephrine is used for the treatment of nasal congestion.
- Dobutamine increases the heart's contractility and heart rate, increasing cardiac output.
- Terbutaline is used for bronchodilation.
Sympatholytic Drugs
- Phenoxybenzamine is used for the treatment of pheochromocytoma.
- Prazosin is a receptor antagonist used for benign prostatic hypertrophy.
Other Clinical Uses
- Methyldopa is used as an antihypertensive agent.
- Mydriasis is used to dilate the pupils.
- Low-dose dopamine increases renal blood flow and blood flow to the kidneys.
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