Hemolysis and hyperkalemia complicate malignant hyperpyrexia during anesthetic death

Area of Science:

• Anesthesiology
• Pharmacology
• Pediatric Critical Care

Background:

• Appendectomy is a common surgical procedure.
• General anesthesia involves a combination of agents like thiopental, nitrous oxide, oxygen, and enflurane.
• Succinylcholine is a depolarizing neuromuscular blocker sometimes used during anesthesia induction.

Observation:

• A 15-year-old male undergoing appendectomy experienced cardiac arrest shortly after succinylcholine administration.
• The patient exhibited severe hyperkalemia (potassium 8.7-11.6 meq/L), significant hemolysis with a hematocrit drop and elevated plasma hemoglobin, and a dramatic increase in creatine phosphokinase (CPK) levels (8900 U/L).

Findings:

• The clinical presentation and laboratory findings were consistent with malignant hyperthermia.
• Marked CPK elevation confirmed the diagnosis of malignant hyperthermia post-mortem.

Implications:

• Malignant hyperthermia is a life-threatening pharmacogenetic disorder triggered by volatile anesthetics and succinylcholine.
• Prompt recognition and treatment with dantrolene are crucial, though resuscitation was unsuccessful in this case.
• This case highlights the critical importance of vigilance for malignant hyperthermia in pediatric patients receiving specific anesthetic agents.