Post-operative movement disorder following anesthesia represents a significant clinical challenge in perioperative medicine. These induced disorders can include tremors, dystonia, myoclonus, and involuntary movements that may distress patients and complicate recovery.
Anesthetic agent selection is a key contributing factor. Volatile anesthetics, such as sevoflurane and desflurane, have been implicated in the development of postoperative tremors and myoclonus. These agents affect neurotransmitter systems, particularly GABA and dopamine pathways governing motor control.
Patient factors matter significantly. Pre-existing neurological conditions like Parkinson's disease increase susceptibility to anesthesia-induced movement abnormalities. Older adults face higher risk due to age-related metabolic changes and existing neurological deficits. Genetic variations in enzyme activity, including cytochrome P450 enzymes, influence anesthetic drug metabolism and therefore movement disorder risk.
Surgical factors also contribute, particularly procedures involving the central nervous system or structures near basal ganglia. Extended surgical times increase cumulative exposure to anesthetic agents, which may exacerbate movement disorder susceptibility.
Management requires a multidisciplinary approach including careful anesthetic agent selection, intraoperative neuromuscular function monitoring, and pharmacological interventions such as benzodiazepines, dopamine agonists, or anticholinergics depending on the type and severity of the disorder.