Which of the following combinations will show vasomotor reversal of Dale
Correct Answer: Phentolamine followed by adrenaline
Description: Adrenaline leads to increased BP by acting on α1 - receptors, and vasodilation by action on β2 receptors. If it is administered after Phentolamine (α1 - blocker) it can lead to only vasodilation, which is termed as "Vasomotor reversal of Dale".
Category:
Pharmacology
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