This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
Anesthetic agent with vasoconstriction is contraindicated in? 
Select and explain. 
A. Finger block, B. Spinal block, C. Epidural block, D. Regional anesthesia
A: Finger block
Answer: A: Finger block 
Explanation: Vasoconstrictor should not be added for ring block of hands, feet, fingers, toes, penis, pinna as all these organs are supplied by endarteries and ischemic damage may occur.