Interindividual Variability in Duration of Action of Rocuronium in Pediatric Patients

time of TOF 1 measurement (= clinical effect, stimulation of the ulnar nerve - adductor pollicis muscle tension) will be documented in the CRF and if there is no need to add further doses of the muscle relaxant, TOF 2, TOF 3, TOF 4, and TOF-R ≥ 0,9 (= time to full recovery from the effect of the non-depolarizing muscle relaxant) will also be registered.