Figure 1. Recovery of twitch height (open symbols) and train-of-four ratio (closed symbols) after mivacurium in two genotypically abnormal patients. Patient 1 received 270 mg of human plasma cholinesterase (pChe) 144 min after the injection of 0.1 mg kg1mivacurium. Patient 2 was given 270 mg of human pChe 145 min after mivacurium and 2.5 mg neostigmine 15 min later (at 160 min).