Adrenergic drugs مهم Flashcards
Epinephrine (Adrenaline) is Stimulates ?
( a1 , a2 , B1 , B2 , B3 )
Norepinephrine ?
( a1 , a2 , β1 )
Isoproterenol (isoprenaline) ? ابو التوأم الدب
( β1, β2 )
Dopamine الدب أمين ?
1- In small dose acts on D1 ( increase renal
blood flow & V.D. )
2- In moderate dose acts on (D1 & B1)
3- In large dose acts on (a1 ) V. C.
Dobutamine دبه امين = زوجته ?
Selective B1 agonist.
Phenylephrine ?
selective a1 antagonist
Oxymetazoline ?
α1& α2-adrenergic
Give examples of Selective a2 agonists ?
Clonidine and a- Methyldopa
Selective B2 agonists ?
Albuterol, salbutamol & terbutaline
Selective B3 agonists ?
Mirabegron
What is the Absorption of epinephrine ?
ineffective orally غير فعال فمويا
What is the uses of epinephrine
1- anaphylactic shock S.C. or IV 2- Cardiac arrest 3- epistaxis 4- With local anesthetics 5- open angle glaucoma 6- acute sever asthma
What is the Adverse effect of epinephrine ?
1- cerebral haemorrhages
2- cardiac arrhythmia
What is the Contraindications of epinephrine ?
1- Cardiovascular disease
2- Hypertension
3- Hyperthyroidism
4- Diabetes mellitus
Norepinephrine Act mainly on ?
alpha receptors more than beta receptors
What is the Pharmacological actions of Norepinephrine ?
1- Blood vessels (V.C.) due to alpha 1
2- Heart : Reflex bradycardia
What is the uses of Norepinephrine (a1,a2,B1 ) ?
Shock to treat acute hypotension
What is the uses of Dopamine ?
Fenoldopam (selective D1 agonist) used in ttt of hypertensive emergency
Fenoldopam (selective D1 agonist) used in ttt of ?
hypertensive emergency
What is the Side effects& contraindications of Dobutamine ?
It should be used with caution in atrial fibrillation
What is the drug that is less potent than noradrenalin in raising blood pressure but it
has a more prolonged action ?
Phenylephrine