This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Regional Anesthesia, Subject name: Anaesthesia
[{'content': 'All of the following procedure can be done under EMLA cream except- \nSelect and explain. \nA. Split thickness skin - graft harvesting, B. Laser removal of po wine stain, C. Lithotripsy, D. Intubation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: It is a cream preparation of local anesthetic providing dermal analgesia. Intubation cannot be done under EMLA it requires general anesthetics. EMLA cream - Eubetic mixture of local anesthetics It is a cream which consists of 1:1 Mixture of 2.5 % Lidocaine and 2.5% prilocaine Contact time required = 60 minutes Depth of Penetration = 3-5 mm. Duration of Analgesia = 1-2 hour The amount of drug absorbed depends on application time, dermal blood flow, keratin thickness and total dose administered. c/I of application of EMLA - 1. Mucous membrane 2. Broken skin 3. < 1 month Uses - laser removal of po wine stains Lithotripsy Circumcision Venous emulation Skin graft harvesting', 'role': 'assistant'}]