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Pharm Ch. 18
Adrenergic Drugs
| Question | Answer |
|---|---|
| What is adrenergic agonists? | drugs that stimulate and mimic the actions of the sympathetic nervous system |
| What is adrenergic recptors? | receptor sites for the sympathetic neurotransmitters nerepinephrine and epinepherine |
| What is alpha adrenergic receptors? | A class of adrenergic receptors that are further subdivided into alpha 1 and alpha 2 adrenergic receptors and are differentiated by their anatomic location in the tissues, muscles, and organs |
| What are autonomic functions? | Bodily functions that are involuntary and result from the physiologic activity of the ANS. |
| What is autonomic nervous system? | a branch of the PNS that controls autonomic bodily functions, it consists of the SNS and the PNS |
| What are beta adrenerfic receptors? | receptors located on postsynaptic effector cells of tissues, muscles and organs stimulated by specific autonomic nerve fivers |
| What are catecholamines? | substances that can produce a sypathomemetic response. they are either endogenous catecholamines of synthetic catecholamines |
| What are dopaminergic receptors? | a third type of adrenergic receptor located in various tissures and organs and activated by the binding of the neurotransmitter dopamine, which can be either endogenous or a synthetic drug form |
| What is mydriasis? | pupillary dilation, whether natural |
| What is ophthalmics? | drugs that are used in the eye |
| What is positive chroniotropic effect? | an increase in heart rate |
| What is positive dromotropic effect? | an increase in the conduction of cardiac electrical impulses through the AV node, which results in the transfer of nerve action potentials from the atria to the ventricles. |
| What is positive inotropic effect? | an increase in the force of contraction of the heart muslce |
| What are sympathomemetics? | drugs used therapeutically that mimic the catecholamines epinephrine, noepinephrine, and domapine |
| What is synaptic cleft? | the space either between two adjacent nerve cell membranes or between a nerve cell membrace and an effector organ cell membrane |
| What do catecholamines stimulate? | the SNS |
| The nurse caring for a pt who is receiving beta 1 agonist drug therapy needs to be aware that these drugs cause? | Increased cardiac contractility |
| During a teaching session for a pt who is recieving inhaled salmeterol, the nurse emphasizes that the drug is indicated for? | prevention of bronchospasm |
| For a pt receiving a vasoactive drug such as intravenous dopamine, which action by the nurse is most appropriate? | Assess the IV site hourly to rule out infiltration |
| A pt is receiving dobutamine for shock and is compaining of feeling more skipping beats than yesterday. the nurse's next action should be? | Assess the pt's vital signs and cardiac rhythm |
| When a drug is characterized as having a negative chronotropic effect, the nurse knows to expect? | Decreased heart rate |
Created by:
alicia.rennaker
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