Ventilatory support is mandatory during treatment until adequate spontaneous respiration is needed. Extubate only after the patient has recovered sufficiently from neuromuscular block. Factors which could cause residual neuromuscular blockade after extubation in the post-op phase (eg, geriatric patients ≥65 yr, drug interaction or patient conditions). High rates of cross-sensitivity between neuromuscular blocking agents. Monitor neuromuscular transmission throughout neuromuscular blocking agents use. Patients receiving both neuromuscular agents & corticosteroids. Concomitant use w/ suxamethonium. Conditions associated w/ prolonged circulation (eg, CV disease, old age, edematous state). Patients w/ neuromuscular disease or after poliomyelitis, myasthenia gravis or myasthenic (Eaton-Lambert) syndrome, obesity, burns. Hypokalemia (eg, after severe vomiting, diarrhea, diuretic therapy), hypermagnesemia, hypocalcemia (after massive transfusion), hypoproteinemia, dehydration, acidosis, hypercapnia, cachexia. Correct severe electrolyte disturbances, altered blood pH or dehydration when possible. Surgery under hypothermic conditions. Hepatic &/or biliary disease &/or renal failure. May affect ability to drive or operate machinery. Pregnancy & lactation. Childn (facilitating tracheal intubation conditions during rapid sequence induction; mechanical ventilation in the intensive care). Elderly (facilitating mechanical ventilation in the intensive care).