Related Experiment Videos
Markedly delayed postoperative malignant hyperthermia
Abstract:
Malignant hyperthermia (MH) may be triggered by exposure to commonly employed anesthetic agents and muscle relaxants, and often manifests itself during the period of anesthesia. Delayed-onset MH occurring one to four hours postoperatively has been described in isolated case reports. A case of delayed-onset MH occurred 11 hours following routine tonsillectomy and adenoidectomy. The patient demonstrated tachypnea, tachycardia, hyperthermia, and metabolic acidosis. Prompt intravenous administration of dantrolene sodium was therapeutic. Serial serum creatine phosphokinase evaluation verified the diagnosis of MH. The implications of delayed-onset MH and the importance of preoperative screening for potentially susceptible individuals are discussed.
Insights
Delayed malignant hyperthermia (MH) can occur hours after anesthesia. Early recognition and dantrolene sodium treatment are crucial for managing this rare but serious condition in surgical patients.
Area of Science:
- Anesthesiology
- Pharmacology
Background:
- Malignant hyperthermia (MH) is a rare, hypermetabolic crisis often triggered by volatile anesthetics and succinylcholine.
- While typically occurring during anesthesia, delayed-onset MH (1-4 hours postoperatively) has been reported in isolated cases.
Observation:
- This report details a case of delayed-onset malignant hyperthermia occurring 11 hours after a routine tonsillectomy and adenoidectomy.
- The patient presented with tachypnea, tachycardia, hyperthermia, and metabolic acidosis, indicative of MH.
Findings:
- Intravenous administration of dantrolene sodium proved therapeutic for the delayed-onset MH.
- Serial serum creatine phosphokinase levels confirmed the diagnosis of malignant hyperthermia.
Implications:
- This case highlights the potential for significant delays in MH onset, extending beyond the typical postoperative window.
- Emphasizes the critical need for vigilance and prompt diagnosis of MH in the postoperative period.
- Underscores the importance of thorough preoperative screening for individuals with a potential susceptibility to malignant hyperthermia.