Muscle relaxants

Area of Science:

• Pharmacology
• Toxicology
• Anesthesiology

Background:

• Designing studies on muscle relaxant toxicity is challenging due to the necessity of mechanical ventilation and anesthetic co-administration.
• Anesthetics can potentially influence the observed toxicity of muscle relaxants.

Purpose of the Study:

• To provide an overview of the toxic effects of muscle relaxants.
• To assess the teratogenic, carcinogenic, and cytotoxic potential of muscle relaxants.
• To discuss other adverse effects, including neurological and cardiovascular impacts.

Main Methods:

• Literature review and synthesis of existing studies on muscle relaxant toxicity.
• Analysis of side effects, including cytotoxic effects, persistent muscle weakness, and central nervous system impacts.
• Examination of interactions with various receptor systems and direct cellular effects.

Main Results:

• Muscle relaxants are generally weak teratogenic, carcinogenic, and cytotoxic agents.
• Succinylcholine can induce cytotoxic effects on skeletal muscle cells.
• Long-term administration of non-depolarizing muscle relaxants may result in persistent muscle weakness.
• Central nervous system receptor stimulation can lead to excitement and seizures.
• Interactions with muscarinic, nicotinic receptors, and ganglionic systems can affect organs like the cardiovascular system.
• Direct mast cell stimulation can cause histamine release, mimicking toxic reactions.

Conclusions:

• Muscle relaxants demonstrate a generally low toxicity profile concerning major adverse outcomes.
• Specific toxic effects are associated with certain muscle relaxants (e.g., succinylcholine) and administration durations.
• A comprehensive understanding of potential side effects, including receptor-mediated and direct cellular effects, is crucial for safe clinical use.