[Invasive techniques in emergency medicine. II. Preclinical thorax drainage--indications and technique].

The preclinical tension pneumothorax which even without technical support is easily recognizable, requires immediate decompression. However, there are a number of patients with thoracic injuries such as serial rib fractures or palpable skin emphysema which--in combination with a ventilator--may necessitate the insertion of a thoracic tube. In the preclinical setting this procedure usually only takes place in the ventilated patient. With patients who are respiratorily compensated and are breathing spontaneously, careful control and a conservative approach is advised even if pneumothorax is suspected.