DRUGS ACTNG ON ANS Flashcards
What is ANS?
autonomic nervous system
what are its classification? 4
- Adrenergic agents
- adrenergic blocking agents
- cholinergic agents
- cholinergic blocking agents
The autonomic nervous system (ANS) is
sometimes called the ______ or _______
involuntary or visceral nervous system
ANS is working closely on what system?
endocrine system
the ANS integrates on what parts to automatically react to changes in the internal and external environments?
the Central Nervous System and Peripheral Nervous System
CNS AND PNS
Adrenergic drugs are also called??
sympathomimetic drug
What are the groups of adrenergic drug? 2
Catecholamines and Non catecholamines
What are the actions of adrenergic drug?
direct-acting
indirect-acting
dual-acting
WHAT TYPE OF ACTION:
in which the drug acts directly on the organ or tissue
innervated (supplied with nerves or nerve impulses) by the sympathetic
nervous system
DIRECT ACTING
WHAT TYPE OF ACTION:
in which the drug triggers the release of a
neurotransmitter, usually norepinephrine
INDIRECT ACTING
WHAT TYPE OF ACTION:
in which the drug has direct and indirect actions.
dual acting
These drugs generally are
indicated for the treatment of
hypotensive states or shock,
bronchospasm, and some
types of asthma
ALPHA-ANDBETA-ADRENERGICAGONISTS
When catecholamines combine with alpha adrenergic receptors or beta-adrenergic
receptors, they cause
excitatory or inhibitory effect
catecholamines produce what effect that can cause the heart to beat faster?
chronotropic effect
is used in low doses to improve
blood flow to the kidneys because it dilates
the renal blood vessels.
dopamine
DRUGS UNDER ALPHA-SPECIFIC
ADRENERGIC AGONISTS?? CMP
❏ clonidine
❏ midodrine
❏ phenylephrine
what is (MAOIs)
monoamine oxidase inhibitors
Use to manage and treat bronchial spasm asthma, and other obstructive
pulmonary conditions???
Beta-Specific Adrenergic Agonists
Usually indicated for treatment of
essential hypertension, orthostatic
hypotension, to ease opiate
withdrawal, cold and allergies, and
shock and shock-like states???
Alpha-Specific Adrenergic Agonists
what drug do u use for shock and ventricular arrhythmias.
*Stimulate cardiac activity and conduction.
isoproterenol
Are called sympatholytic drugs because they lyse, or
block, the effects of sympathetic nervous system
ADRENERGIC
BLOCKING
AGENTS
what drug in NONSELECTIVE
ALPHA-ADRENERGIC
BLOCKINGAGENTS?
phentolamine
These drugs do not block the presynaptic alpha2-receptor sites, the
reflex tachycardia that accompanies a fall in blood pressure does
not occur. They also block smooth muscle receptors in the prostate,
prostatic capsule, prostatic urethra, and urinary bladder neck, which
leads to a relaxation of the bladder and prostate and improved flow
of urine in male patients.
ALPHA1-SELECTIVE ADRENERGIC BLOCKING AGENTS
