SYmpathetic Blockers Flashcards
1
Q
Alpha 1 selective Blockers
A
PTDT
Prazosin, terazosin, Doxazosin, tamsulosin
SInce they block alpha 1 they prevent vascular smooth muscle contraction and bladder spincter tightening
USED MOSTLY IN BPH, can also lower BP
May cause ortho hypotension and reflex tachy
2
Q
Tamsulosin is used to treat
A
BPH……VERY VERY SELECTIVE….uses an alpha receptor found really only in the prostate
3
Q
Alpha 2 selective
A
Mirtazapine
4
Q
Non-selective alpha blockers
A
Phenoxybenzamine, Phentolamine
5
Q
Non-selective beta blockers
A
Propanolol, Timolol, Natolol
6
Q
What is unique about Acebutolol and Pindolol as beta blockers
A
They are actually very weak agonists but because they displace norepinephrine, which is a much stronger natural gonist, they work as antagonists.
