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12 Cards in this Set
- Front
- Back
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Name 5 Alpha adrenergic drugs
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norepinephrine
epinephrine ephedrine racemic epinephrine phenylephrine |
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Name 9 Beta adrenergic drugs
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epinephrine
dopamine isoproterenol metaproterenol isoetharine albuterol levalbuterol terbutaline tornalate |
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dominant when the body is at rest; controls digestion, waste, G.I. system, lowers HR
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parasympathetic nervous system
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dominant when the body is under stress or increased activity; a prolonged period of stress can result in exhaustion or death
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sympathetic nervous system
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characteristics of the sympathetic nervous system
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vasoconstricts
increases HR & contractility decreases peristalsis dilates pupils dilates resp. tract relaxes bladder constricts urinary sphincter |
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Alpha drug characteristics
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arteries/smooth muscle receptors
arterioles constrict increased BP increased SVR |
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Alpha? Beta1? Beta2?
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Alpha: arteries & veins
Beta1: heart Beta2: lungs, bronchial smooth muscle |
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Beta drug characteristics
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heart & lungs
Beta1: increases HR & contractility Beta2: dilates bronchial smooth muscle (relaxes) |
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agent affecting rate of cardiac contraction
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chronotropic
- very low (<40) OR very high (>140) can cause arrythmias |
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agent affecting the force of cardiac contraction (i.e. calcium & digitalis)
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inotropic
- isoproterenol & epinephrine are both chronotropic & inotropic |
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load or tension on the cardiac muscle as it begins to contract
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preload
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amount of resistance against which the heart must pump
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afterload
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