Anaesthetic agent with vasoconstrictor is contraindicated in?: (A) Digital block, (B) Spinal block, (C) Epidural block, (D) Regional anaesthesia
Answer is A. 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.