Suxamethonium and cardiac arrest

Area of Science:

• Anesthesiology
• Critical Care Medicine
• Pharmacology

Background:

• Suxamethonium is a common neuromuscular blocking agent used in anesthesia.
• Hyperkalemia is a known, though rare, side effect of suxamethonium.
• Septic patients may have altered physiological responses to medications.

Observation:

• A septic patient experienced cardiac arrest after endotracheal tube change.
• The cardiac arrest was attributed to hyperkalemia induced by suxamethonium administration.
• This complication occurred during a routine airway management procedure.

Findings:

• Suxamethonium administration led to life-threatening hyperkalemia in a critically ill septic patient.
• The study highlights a rare but fatal adverse event associated with suxamethonium.
• The underlying mechanisms of suxamethonium-induced hyperkalemia in critical illness are discussed.

Implications:

• Caution is advised when using suxamethonium in patients with burns, physical injuries, or neurological disorders.
• Critically ill patients requiring prolonged intensive therapy unit (ITU) care are at increased risk.
• Anesthesiologists and critical care physicians should be aware of this potential complication and consider alternative agents.