<prompt> The dibucaine number refers toAch cholinesterase activity derangementPotency of muscle relaxantsPotency of general anaestheticsNone  <response>: Dibucaine number: Dibucaine a local anaesthetic inhibits 80 of normal pseudocholinesterase and 205 of atypical non-functional pseudocholinesterase. Therefore normal dibucaine number is 70-80. The dibucaine number is used to measure the activity of atypical pseudocholinesterase.Refer: stoeltings pharmacology and physiology in anaesthetic practice, 5th edition, pg no.290,304 