This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia, Subject name: Pharmacology
Anesthetic agent with vasoconstrictor is contraindicated in 
Select and explain. 
A. Digital block, B. Spinal block, C. Epidural block, D. Regional anesthesia
A: Digital block
Answer: A: Digital block 
Explanation: Refer Katzung 11/e p446 Vasoconstrictors are contraindicated if LAs are used for organs with end aeries like tips of fingers, toes, nose, pinnacle, and penis due to risk of ischemia and necrosis