Patient receive succinylcholine as a muscle relaxant (0,5mg/kg) after induction of general anaesthesia for rigid bronchoscopy.

Patients receive mivacurium (0,08mg/kg) as a muscle relaxant after induction of general anaesthesia for rigid bronchoscopy. At the end of the procedure and a twitch of 25% mivacurium was reversed with neostigmine (50 microg/kg) and atropin (10 microg/kg)

Anaesthesia was induced and maintained with propofol(1-2mg/kg and 5mg/kg/h) and remifentanil (1µg/kg and 0,2µ/kg/min). The study arm is immobilized and a dual electrode for peripheral nerve stimulation is placed over the ulnar nerve near the wrist. Neuromuscular monitoring is performed with accelerometry. the patients receive the muscle relaxant according to the study group.

For measuring the intubation conditions the scoring system proposed for Good clinical Research Practice using the following variables is used: conditions of inserting the rigid bronchoscope, vocal cord position and coughing

The severity of POM was measured using a four point scale:

0=no myalgia

1. minor pain limited to one area of the body
2. muscle pain or stiffness noticed spontaneously by the patient, which may have required analgesic therapy
3. generalized, severe or incapacitating discomfort

Measurement on a numeric ten point scale (10=totally satisfied)