PMID: 2106275Jan 1, 1990Paper

Early recognition of malignant hyperthermia using capnometry

Der Anaesthesist
A Meier-HellmannK Reinhart

Abstract

Although malignant hyperthermia is still a potentially fatal disease that was marked by a high mortality until recently, lasting damage to the patient can now be prevented by early diagnosis and treatment. The following case demonstrates the special value of capnometry in diagnosing this condition. A 34-year-old man admitted for oral surgery showed symptoms of malignant hyperthermia 5 h after induction of anesthesia. Neuroleptanalgesia had been conducted. The patient had received thiopental and fentanyl for induction of anesthesia and alcuronium and succinylcholine for intubation. The first symptom noticed was an elevation of the end-tidal pCO2 as monitored by capnometry. Additional symptoms, such as a pronounced rise in temperature, blood pressure, and heart rate did not develop until 20-25 min later. The end-tidal oxygen concentration decreased from 30 vol.-% to 26 vol.-%. The patient had to be ventilated with a volume of 25 l/min to keep end-tidal pCO2 under 6 kPa. Treatment with dantrolene was started immediately. Not until 3 h after the onset of the first symptoms did the patient's body temperature and the minute volume needed for ventilation return to normal. Postoperative laboratory findings showed only a slight elevatio...Continue Reading

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