[Prolonged neuromuscular block caused by succinylcholine in a patient with normal cholinesterase activity].

The authors describe a case of prolonged neuromuscular blockade following suxamethonlum in a patient with a normal cholinesterase activity and dibucaine number > or = 75%. In this case a peripheral nerve stimulator and capnography allowed neuromuscular blockade evaluation and fresh frozen plasma infusion led to a normal recovery from suxamethonium neuromuscular blockade. This report suggests a case of abnormal cholinesterase activity described as "silent variant".