Dibucain number refers to ?: (A) Ach cholinestrase activity derangement, (B) Potency of muscle relaxants, (C) Potency of general anaesthetics, (D) None
Answer is A. Ans. is 'a' i.e., Ach chlinestrase activity derangement Dibucain number : Dibucain (a local anaesthetic) inhibits 80% of normal pseudocholinesterase and 20% of atypical (non-functional) pseudocholinesterase. Therefore normal dibucain number is 70-80%. Dibucain number is used to measure the activity of atypical pseudocholinesterase.