Therapeutic Uses of Direct Acting Sympathomimetics or Sympatholytics Flashcards
Sympathomimetics vs/ lyitcs
Lytics will prevent
Mimetics will activate
NE and septic shock
Used to increase systemic arterial blood pressure in septick shock by stimulating alpha1-adrenergic receptors
NE on alpha 1 and beta 1
Alpha 1 - vasoconstriction
Beta 1 - positive inotropic
Increases cardiac output and would be effective in cardiogenic shock
Pseudoephedrine
Mimetic used in cold prep
Constricts nasal mucosa and blood vessels leading to decreased resistance to air flow
Alpha 1 mediated
Pseduophedrine side effects
Increased BP and insomnia
Pseudophedrine drug interactions
MAOIs, TCAs or amphetamines
Mydriatic effects
Alpha 1 agonists can be used to produce mydriasis
Epineprhine and albuterol
Beta 2 adrenergic mimetics
Still work on Beta 1 but prefer beta 2…activate cellular processes using cAMP
Activation of beta 2 results in
Bronchodilation and increase in airway resistance
Epineprhine
Beta 2 agonist to tx respiratory distress or bronchospasm (asthma or allergic reactions)
Beta 1 target use
Can help provide inotropic support to patients with decompensated herat failure
Neuro uses of beta blockers
Glaucoma (timolo)
Migraine
Performance anxiety
Essential tremor
Neuro side effects of beta blockers
Fatigue, depression, drowsiness