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PDA I Final Exam Material 2008
Noradrenergic Transmission III
54
Health Care
Professional
12/16/2008

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Term
These types of drugs decrease sympathetic neuronal activity:
Definition
Sympatholytic drugs
Term
Phenoxybenzamine and phentolamine are examples of:
Definition
Non-selective alpha-blocking drugs
Term
Prazosin and yohimbine are examples of:
Definition
Selective alpha-blocking drugs
Term
These types of drugs block the action of norephinephrine and epinephrine, causing vasodilation and a decrease in blood pressure:
Definition
Alpha-1 antagonists
Term
These receptors are predominant on vascular smooth muscle:
Definition
Alpha-1 receptors
Term
Alpha-1 blockade can result in these response reflexes:
Definition
Reflex tachycardia; postural hypotension
Term
This condition is a sudden drop in blood pressure due to the effects of gravity:
Definition
Postural hypotension
Term
This drug is an IRREVERSIBLE, non-selective alpha receptor blocker:
Definition
Phenoxybenzamine
Term
This non-selective, irreversible alhpa blocker is used to treat pheochromocytoma:
Definition
Phenoxybenzamine
Term
Phenoxybenzamine is used in the treatment of:
Definition
Pheochromocytoma
Term
This drug is a potent competitive REVERSIBLE, non-selective alpha blocker:
Definition
Phentolamine
Term
This competitive reversible, non-selective alpha blocker is used to treat pheochromocytoma:
Definition
Phentolamine
Term
Phentolamine is clinically used to treat:
Definition
Pheochromocytoma
Term
This drug is a potent alpha-1 receptor antagonist:
Definition
Prazosin
Term
This selective alpha-1 antagonist is used to treat severe cases of chronic hypertension:
Definition
Prazosin
Term
This drug is a selective alhpa-2 receptor antagonist:
Definition
Yohimbine
Term
This selective alpha-2 antagonist is clinically used to treat male impotence:
Definition
Yohimbine
Term
Postural hypotension, reflex tachycardia, inhibition of ejaculation, and nasal stuffiness are side effects of:
Definition
Alpha blockers
Term
Propranolol and timolol are examples of:
Definition
Non-selective B-antagonists
Term
These drugs competitively block the effects of Epi/NE:
Definition
Beta blockers
Term
Beta-1 blockers are clinically used to treat:
Definition
Hypertension
Term
The term chronotropic refers to:
Definition
Heart Rate
Term
The term inotropic refers to:
Definition
Contractility
Term
This drug is a non-selective beta antagonist that causes blocks positive chronotropic (heart rate) and inotropic (contractility) effects on the heart:
Definition
Propranolol
Term
This non-selective beta blocker is used to treat HTN, angina, arrhythmia, post-MI, etc.
Definition
Propranlol
Term
Side effects of propranolol in asthma patients includes:
Definition
Worsening of asthma symptoms because of Beta-2 antagonism
Term
Side effects of propranolol in diabetics includes:
Definition
Insulin induced hypoglycemia; inhibition of gluconeogenesis and glycogenolysis
Term
Propranolol is contraindicated in heart disease patients with which diseases?
Definition
Sinus bradycardia, partial heart block, congestive heart failure
Term
True or False: Patients who take propranolol for extended periods of time are at risk for rebound effects/withdrawal.
Definition
True
Term
Timolol is an example of this type of drug:
Definition
Non-selective B-antagonist
Term
This non-selective B-antagonist is used clinically to treat HTN, angina, and topically to treat glaucoma:
Definition
Timolol
Term
Timolol, a non-selective B-antagonist, is clinically used to treat what?
Definition
HTN, angina, and topically to treat glaucoma
Term
Atenolol, bisoprolol, and metoprolol are examples of:
Definition
Beta-1 antagonists
Term
Which of these should be administered to a patient with hypertension and asthma: metoprolol or propranolol?
Definition
Metoprolol
Term
These drugs have greater affinity for beta receptors in the heart and cause a decrease in heart rate and contractility:
Definition
Beta-1 antagonists
Term
Acute bronchospasm, bradycardia, and withdrawal symptoms are all possible side effects with these drugs:
Definition
Beta-1 antagonists
Term
Beta-1 antagonists are clinically used to treat what diseases:
Definition
HTN, angina, heart failure, migraine prophylaxis (metoprolol and atenolol), and tremor (metoprolol)
Term
This class of drugs is used to inhibit the synthesis, storage, and release or norepinephrine:
Definition
Indirect-acting sympatholytic drugs
Term
Indirect-acting sympatholytic drugs are primarily used to treat:
Definition
HTN
Term
Metyrosine inhibits this enzyme:
Definition
Tyrosine hydroxylase
Term
The inhibition of tyrosine hydroxylase by this drug inhibits the production of dopamine, NE, and Epi:
Definition
Metyrosine
Term
This drug used in the treatment of HTN associated with pheochromocytoma inhibits the release of Epi/NE.
Definition
Metyrosine
Term
Carbidopa decreases the release of dopamine by inhibiting this enzyme:
Definition
Dopa decarboxylase
Term
This drug is given in conjunction with L-Dopa to increase L-Dopa's bioavailability:
Definition
Carbidopa
Term
Carbidopa, along with L-Dopa, is used in the treatment of this disease:
Definition
Parkinson's Disease
Term
This drug is used with low dose diuretics to treat mild HTN:
Definition
Reserpine
Term
Reserpine acts by:
Definition
Decreasing the storage of NE in storage vesicles
Term
This drug decreases the release of NE, and has been discontinued in the US:
Definition
Guanethidine
Term
Guanethidine, like tyramine, displaces this molecule:
Definition
NE
Term
Guanethidine, which is discontinued in the US, can cause these side effects:
Definition
Decreased BP, HR, & CO; postural hypotension; increased gut motility & MASSIVE DIARRHEA; nasal stuffiness; impaired ejaculation.
Term
Bretylium is clinically used as:
Definition
An IV treatment of ventricular dysrhythmias
Term
This drug decreases the release of NE, and blocks NE reuptake:
Definition
Bretylium
Term
Methyldopa and clonidine are alhpa-2 agonists that do what?
Definition
Decrease sympathetic outflow in the CNS
Term
Activation of alpha-2 receptors in the hypothalamus and medulla by these drugs causes an increase in sympathetic outflow from the CNS. Consequentially, this decreases the total peripheral resistance, heart rate, and cardiac output, leading to a reduction in blood pressure.
Definition
Methyldopa and clonidine
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