<prompt> Propofol infusion syndrome all ExceptOccurs with infusion of propofol for 48 hours or longerOccurs in critically ill patientsFeatures are nausea and vomitingFeatures are cardiomyopathy, hepatomegaly  <response>: Propofol infusion syndromeA lethal syndrome, associated with infusion of propofol for 48 hours or longerOccurs in children and critically illOccurs as a result of failure of free fatty acid metabolism and failure of the mitochondrial respiratory chain.Features are-cardiomyopathy with acute cardiac failure, metabolic acidosis, skeletal myopathy, hyperkalemia, hepatomegaly and lipemia.Refer: stoeltings pharmacology and physiology in anaesthetic practice, 5th edition, pg no.160-168 