Alpha blockers pharmacology ppt
Title: Adrenoceptor Blockers 1 Adrenoceptor Blockers Dumrongsak Pekthong comienzoweb.com(Pharmacology) 2 Wording. Adrenoceptor Blocker ; Adrenergic Antagonist ; Subgroups in Sympathoplegic drugs ; Alpha Blocker, Alpha Antagonist ; Beta Blocker, Beta Antagonist; 3 Objectives. 1. Describe the effects of E and NE in the presence and in the absence of Alpha Blocker. 2. before non selective α-blocker is given, epi's net effect is to increase heart rate, contractility, and vasoconstriction leading a net pressor effect on blood pressure after α-blocker is given, epi's α response is blocked while its β 2 response remains leading to net depressor effect on blood pressure (top of image). Jan 05, · Alpha adrenergic blockers. 3. General effects of α blockers Blood vessels α1-blockade→reduces peripheral resistance Fall in BP Postural hypotension α2-blockade in brain ↑se vasomotor tone. Block pressor action of adrenaline, fall in BP due toβ2. action- “vasomotor reversal of Dale” Actions of selective α-agonists.