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Ch. 6 Pharmacolgy Pt. A
Ch. 6 Pharmacology Pt. A
30
Medical
Undergraduate 1
09/21/2011

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Term
What is the general indication for the use of an adrenergic bronchodilatior?
Definition
relaxation of airway smoothe muscle in prescence if reversabile airflow obstruction associated with acute and chronic asthma, bronchitis, emphasyema, and other airway obstruction diseases.
Term
Key Point
Definition
The adrenergic bronchodilator group is indicated for the treatment of reversible airway obstruction in diseases such as asthma and COPD. These agents produce bronchodialation by stimulating B2 receptors on airway smooth muscle.
Term
What is the indication for use of a short-acting agent?
Definition
When there is an airway obstruction in asthma or other obstructive airway diseases. for breakthrough symptoms or for
Term
What is the indication for use of a long-acting agent?
Definition
It is to control bronchospasms and for control of nocturnal symptoms in asthma or obstructive diseases.
Term
Another name for a long-acting agent is a “controller”
Definition
Salmeterol, formoterol, and arformoterol
Term
What is the indication for use of racemic ephinephrine?
Definition
Inhaled or aerosol, used to reduce airway swelling after extubation or during epiglottis, croup or bronchiolitis, or to control airway bleeding during endoscopy.
Term
What are the three types of subgroups of adrenergic bronchodialators? Differentiate between the three types and give examples of each type.
Definition
1.) Ultrashort-acting- Epinephrine, isoproterenol, isoetharine
2.) Short-acting- Abuterol, levalbuterol, metaproterenol, pirbuterol, terbutaline.
3.) Long-acting- Salmeterol, formoterol, aformeterol.
Term
Catecholamine-
Definition
one of a group of similar compounds having a sympathomimetric action, and a chemical structure consisting of an aromatic catechol nucleus and a dialiphatic amine side chain.
Term
Examples of Catecholamines-
Definition
Dopamine, epinephrine, norepinephrine, isoproterenol, and isoetharine.
Term
What is another name for catecholamines?
Definition
Sympathomimetric
Term
What are some side effects seen with catecholamines?
Definition
Tachycardia, elevated blood pressure, smooth muscle, relaxationof bronchioles and skeletal muscle blood vessels, glycogenolysis, skeletal muscle tremor, and CNS.
Term
Adrenergic Bronchodilators can exist in two different spatial arrangements, producing isomers.
What are Enantiomers?
Definition
Have similar physical and chemical properties, but not the same physiological effects.
Term
Levalbuterol represents the first synthetic inhaled solution available as the single (R) isomer of
Definition
racemic albuterol.
Term
What is Epinephrine?
Definition
A potent catecholamine bronchodilator that stimulates both a and b receptors.
Term
What is isoproterenol?
Definition
A potent catecholamine bronchodialator that stimulates both b1 (cardiac) and b2 receptors. It is usually used for nebulization until the advent of the more b2-specific agents such as isoetharine and later the resorcinols, saligeniins, and others.
Term
Is isoproterenol still used as a nebulizer solution?
Definition
No
Term
What is a prodrug?
Definition
A prodrug is when a drug is administered and the drug is converted in the body to an active drug.
Term
What are 3 strengths of levalbuterol available for nebulization?
Definition
0.31mg, 0.63mg, & 1.25mg
Term
The 0.63mg dose of levalbuterol was found to be comparable to what strength albuterol?
Definition
2.5mg
Term
What are the benefits of using levalbuterol over regular albuterol?
Definition
The side effects are far less, there is a smaller chance of tachycardia.
Term
What are the two benefits mentioned for use of long-acting agents for asthmatic patients?
Definition
Longer acting agents offer the advantages of less frequent dosing and protection through the night for asthmatic patients.
Term
Key Point
Definition
Salmeterol, formoterol, and aformoterol represent long acting b2 agonists with a 12 hour duration of action resulting from their unique pharmacodynamics.
Term
What is the duration of action for salmeterol?
Definition
12 hrs
Term
What is formoterol? How long is its duration of action?
Definition
A b2 selective agonist with a long acting bronchodialatory effect of up to 12 hours in duration.
Term
Compared to salmeterol, is the onset of action quicker or slower with formoterol?
Definition
quicker
Term
National guidelines recommend the introduction of a long-acting b agonist in what step of asthma care?
Definition
is not controlled by regular low dose inhaled corticosteroids. step 3
Term
Use of long-acting b agonists may prevent the need to increase
Definition
the inhaled dose of Corticosteroids.
Term
Are long-acting B agonists recommended for rescue bronchodilation?
Definition
No
Term
What kind of B agonist should be prescribed and available for asthmatics for treatment of breakthrough symptoms?
Definition
A short-acting b agonist such as albuterol
Term
Can B agonists substitute for inhaled corticosteroids?
Definition
no
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