This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthesia, Subject name: Pharmacology
Anaesthetic agent with vasoconstrictor is contraindicated in? 
Select and explain. 
A. Digital block, B. Spinal block, C. Epidural block, D. Regional anaesthesia
A: Digital block
Answer: A: Digital block 
Explanation: Ans. (A) Digital block(Ref: Katzung 11th/e p446)Vasoconstrictors are contraindicated if LAs are used for organs with end arteries (tips of fingers, toes, nose, pinna and penis) due to risk of ischemia and necrosis.