Doxacurium chloride

A non-depolarizing neuromuscular blocking agent

Doxacurium chloride
Chemical structure of Doxacurium chloride

Doxacurium chloride is a non-depolarizing neuromuscular blocking agent used in anesthesia to induce muscle relaxation during surgery or mechanical ventilation. It is a member of the benzylisoquinolinium class of neuromuscular blockers.

Mechanism of Action

Doxacurium chloride works by competitively inhibiting the action of acetylcholine at the neuromuscular junction. It binds to the nicotinic acetylcholine receptor on the motor end plate, preventing acetylcholine from binding and thus blocking the transmission of nerve impulses to the muscle.

Pharmacokinetics

Doxacurium chloride is administered intravenously. It has a slow onset and a long duration of action compared to other neuromuscular blockers. The drug is metabolized in the liver and excreted primarily in the urine.

Clinical Use

Doxacurium chloride is used to facilitate endotracheal intubation and to provide skeletal muscle relaxation during surgery or mechanical ventilation. It is particularly useful in procedures that require prolonged muscle relaxation.

Side Effects

Common side effects of doxacurium chloride include hypotension, flushing, and bronchospasm. As with other neuromuscular blockers, there is a risk of prolonged paralysis and respiratory depression if not properly monitored.

Contraindications

Doxacurium chloride should not be used in patients with known hypersensitivity to the drug or any of its components. Caution is advised in patients with myasthenia gravis or other neuromuscular disorders.

Related pages

• Neuromuscular-blocking drug
• Anesthesia
• Acetylcholine
• Endotracheal intubation