Case report: anaesthesia in myotonic dystrophy

Area of Science:

• Anesthesiology
• Neuromuscular Disorders
• Pharmacology

Background:

• Myotonic dystrophy presents challenges in anesthesia due to potential for muscle spasms.
• Neuromuscular blocking agents are crucial for surgical procedures in these patients.

Observation:

• Pancuronium combined with a continuous infusion of Althesin was administered to a patient with myotonic dystrophy.
• The anesthetic regimen aimed to achieve profound muscle relaxation.
• Cardiovascular parameters and electromyography (EMG) were monitored throughout the procedure.

Findings:

• Excellent muscle relaxation was achieved, indicated by the absence of percussion or surgically induced myotonia.
• Electromyography (EMG) showed no modification, suggesting a potential intracellular site of action for Althesin.
• Remarkable cardiovascular stability was maintained during the perioperative period.

Implications:

• The findings suggest Althesin may act intracellularly, offering a novel approach to muscle relaxation in myotonic dystrophy.
• Postoperative monitoring revealed an increased myocardial susceptibility to hypokalemia, highlighting a potential complication.
• Further research is warranted to explore Althesin's specific mechanism and optimize its use in patients with neuromuscular disorders.