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Pharm 11 - Antihypertensives
pharm of HTN drugs
27
Pharmacology
Graduate
02/09/2011

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Cards

Term
Clonidine, methyldopa - MOA?
Definition
centrally acting sympathoplegic, activate a2 adrenoreceptors
Term
Clonidine, methyldopa - effects?
Definition
Reduce central sympathetic outflow, reduce norepi release from noradrenergic nerve endings
Term
Clonidine, methyldopa - clinical applications?
Definition
hypertension, clonidine also used in withdrawal from abused drugs
Term
Clonidine, methyldopa - kinetics, tox?
Definition
oral, clonidine also patch, tox- sedation, methyldopa- hemolytic anemia
Term
Reserpine - MOA?
Definition
Blocks vesicular amine transporter in noradrenergic nerves and depletes transmitter stores
Term
Reserpine - effects?
Definition
Reduce all sympathetic effects, especially CV, reduces BP
Term
Reserpine - clinical applications?
Definition
HTN, but rarely used
Term
Reserpine - kinetics, tox?
Definition
oral, long duration (days), tox - psychiatric depression, GI disturbances
Term
Guanethidine - MOA?
Definition
Interferes with amine release and replaces norepi in vesicles
Term
Guanethidine - effects?
Definition
same as reserpine
Term
Guanethidine - kinetics, tox?
Definition
oral, long duration, severe orthostatic hypotension, sexual dysfunction
Term
Prazosin, terazosin, doxazosin - MOA?
Definition
selectively block a1 adrenoreceptors
Term
Prazosin, terazosin, doxazosin - effects?
Definition
Prevent sympathetic vasoconstriction, reduce prostatic smooth muscle tone
Term
Prazosin, terazosin, doxazosin - clinical applications?
Definition
HTN, BPH
Term
Prazosin, terazosin, doxazosin - kinetics, tox?
Definition
oral, orthostatic hypertension
Term
Hydralazine - MOA?
Definition
causes nitric oxide release
Term
Hydralazine - effects?
Definition
vasodilation, reduce vascular resistance, arterioles more sensitive than veins, reflex tachy
Term
Hydralazine - clinical applications?
Definition
HTN
Term
Hydralazine - kinetics, tox?
Definition
oral, angina, tachy, lupus-like syndrome
Term
Minoxidil - MOA?
Definition
Metabolite opens K channels in vascular smooth muscle
Term
Minoxidil - effects?
Definition
vasodilation, arterioles more sensitive than veins
Term
Minoxidil - clinical applications?
Definition
HTN, hair loss
Term
Minoxidil - kinetics, tox?
Definition
oral, angina, tachy, hypertrichosis (hirsutism)
Term
Nitroprusside, fenoldopam, diazoxide - what are the MOAs?
Definition
release NO, activates D1 receps, opens K channels
Term
Nitroprusside, fenoldopam, diazoxide - effect?
Definition
powerful vasodilation
Term
Nitroprusside, fenoldopam, diazoxide - clinical applications?
Definition
HTN emergencies
Term
Nitroprusside, fenoldopam, diazoxide - kinetics, tox?
Definition
parenteral, excessive hypotension, shock
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