Correlates of myalgia in electroconvulsive therapy

Area of Science:

• Neuroscience
• Anesthesiology
• Psychiatry

Background:

• Myalgias (muscle pain) are a frequent adverse effect of electroconvulsive therapy (ECT).
• The underlying mechanisms contributing to ECT-induced myalgias remain unclear.
• Two primary hypotheses involve motor activity during seizures and succinylcholine-induced fasciculations.

Purpose of the Study:

• To investigate the correlation between motor activity during ECT-induced seizures and succinylcholine-induced fasciculations with subsequent myalgia complaints.
• To determine if adjusting succinylcholine dosage could mitigate myalgias in ECT patients.

Main Methods:

• Quantified the degree of motor movements during ECT seizures.
• Assessed the intensity of fasciculations caused by succinylcholine administration.
• Correlated these measures, along with succinylcholine dose, with patient-reported myalgia severity.

Main Results:

• No significant correlation was found between the degree of motor activity during seizures and myalgia severity.
• The strength of succinylcholine-induced fasciculations did not correlate with myalgia complaints.
• Succinylcholine dosage itself did not show a correlation with the incidence or severity of myalgias.

Conclusions:

• Neither seizure-related motor activity nor succinylcholine fasciculations appear to be the primary drivers of myalgias following ECT.
• Adjusting succinylcholine dosage is unlikely to be an effective strategy for managing myalgias in patients undergoing ECT.