[Brachial plexus blockade via the interscalene port--for regional anesthesia/analgesia of upper extremities; use, application and risks].

The interscalene technique for brachial plexus anaesthesia is described. The method is suitable for anaesthesia of the upper extremity, especially when anaesthesia of the proximal part of the arm and the shoulder region is desired. The technique is also useful in paediatric cases. Side effects are few, but the risk of paralysing of the diaphragm makes this method inappropriate for patients with severe respiratory disease.