title: [Blood gas studies on the efficiency of narkosepiromat 650 (dräger) (author's transl)].
abstract: Efficiency of ventilation of Spiromat 650 (Dräger) has been examined in 54 patients under general anaesthesia and relaxation during normoventilation and hyperventilation of 15 and 30% degree. Changes in the acid-base status of arterial blood were used as criteria. There was a tendency to metabolic acidosis in all kinds of ventilation-probably as a consequence of surgical trauma-which was covered by an respiratory alkalosis. In all groups arterial PCO2 was reduced about 25%, without any significant difference between results of normo- 15%-and 20% hyperventilation. Using the Spiromat 650 (Drger) as  respirator to normovolemic ventialtion is recommanded for clinical use.
mesh_terms: D000138:Acidosis / Q000209:etiology; D000368:Aged; D000472:Alkalosis, Respiratory / Q000209:etiology; D001784:Blood Gas Analysis; D002245:Carbon Dioxide / Q000097:blood; D006801:Humans; D006985:Hyperventilation; D008875:Middle Aged; D010313:Partial Pressure; D012122:Ventilators, Mechanical / Q000009:adverse effects
chemical_list: D002245:Carbon Dioxide
vernacular_title: Blutgasanalytische Untersuchungen zur Beatmungseffektivität des Narkosespiromat 650 (Dräger)