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