Muscle Relaxants for Adolescents

Introduction to Muscle Relaxants

The American Academy of Pediatrics and other guideline societies recommend methocarbamol, cyclobenzaprine, carisoprodol, chlorzoxazone, and metaxalone for musculoskeletal conditions, while succinylcholine and non-depolarizing agents like rocuronium are used in anesthetic settings for adolescents 1, 2

Methocarbamol is commonly prescribed for acute muscle spasms in adolescents, with evidence supporting its efficacy 1
The American College of Physicians recommends that muscle relaxants like methocarbamol be used for acute musculoskeletal pain rather than chronic conditions, due to limited evidence for their efficacy in chronic pain 1

Succinylcholine is commonly used for rapid sequence induction in adolescents, with age-appropriate dosing of 1.0 mg/kg for adolescents over 10 years old 4, 5
Rocuronium is an alternative to succinylcholine for rapid sequence induction when succinylcholine is contraindicated, with higher doses potentially needed for rapid onset 4, 5
Atracurium and mivacurium are acceptable alternatives for muscle relaxation during anesthetic procedures in adolescents, according to the American Society of Anesthesiologists 6

Monitoring of neuromuscular blockade is essential in adolescents receiving muscle relaxants during anesthesia, as residual neuromuscular blockade occurs in approximately 28% of children receiving these agents, as reported by the American Academy of Pediatrics 4, 5
Succinylcholine is contraindicated in adolescents with primary muscle disorders or conditions with up-regulation of nicotinic acetylcholine receptors, due to risk of rhabdomyolysis or life-threatening hyperkalemia, as stated by the American Heart Association 5, 7
The American Academy of Child and Adolescent Psychiatry recommends careful consideration of muscle relaxant use in adolescents with lower seizure thresholds and more prolonged seizures with muscle relaxants used during procedures like electroconvulsive therapy 6, 8

Neuromuscular diseases are a contraindication for succinylcholine use in adolescents, due to risk of rhabdomyolysis or life-threatening hyperkalemia, as warned by the American Academy of Neurology 5, 7
Close monitoring is essential when using muscle relaxants in adolescents, particularly in anesthetic settings, to prevent residual neuromuscular blockade, as emphasized by the American Society of Anesthesiologists 9, 4
The American Geriatrics Society recommends that benzodiazepines be used with caution in adolescents due to limited evidence for direct analgesic effects and risks of dependence and cognitive impairment 3