NCT01441960

Optimal Dose of Succinylcholine and Rocuronium for Electroconvulsive Therapy (ECT)

Optimal Control of Muscle Strength for Electroconvulsive Therapy: A Comparison of Succinylcholine Versus Rocuronium-induced Neuromuscular Blockade

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 45 (actual)
• Sponsor: Massachusetts General Hospital · Academic / Other
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: Not accepted

Summary

Electroconvulsive therapy (ECT) is the transcutaneous application of small electrical stimuli to the brain to produce generalized seizures for the treatment of selected psychiatric disorders such as severe depression. The aim of ECT is to induce a therapeutic tonic seizure where the person loses consciousness and has convulsions. Patients need general anesthesia and neuromuscular blockade to treat pain and avoid excessive tonic clonic motor contraction that might be associated with compression fractures. Neuromuscular blocking drugs (NMBD) are, therefore, administered after induction of general anesthesia to induce neuromuscular blockade. Despite the importance of NMBDs to provide optimal conditions for ECT treatment, the optimal NMBD dose to achieve acceptable neuromuscular blockade without excessive or untoward effects has not previously been identified in any study and in a prospective randomized fashion. The aim of this study is, therefore, to identify the optimal NMBD dose of two commonly used neuromuscular blocking agents (succinylcholine and rocuronium) in order to optimize the muscle strength modulation during ECT that facilitates ECT with the minimal side effects.

Detailed description

Patients, who consent to participate in the study, will randomly receive either succinylcholine or rocuronium by utilizing the Dixon's up and down technique. For patient safety, the first dose of either agent will be defined by the anesthesiologist providing care, and subsequent doses will be incrementally increased or decreased by 10% based on the assessment of a psychiatrist blinded to dose, who uses a dichotomous scale to assess the quality of the ECT (acceptable and not acceptable). The investigators will switch to the second compound as soon as the patient has received one neuromuscular blocking agent dose that resulted in 'acceptable muscle relaxation', and another dose that resulted in 'unacceptable' conditions'. Acceleromyography will be used for monitoring neuromuscular transmission. Following induction of general anesthesia, the TOF-Watch SX will be calibrated (mode 1, 50 mA), and train-of-four (TOF) stimulation (every 15 seconds) will be initiated and maintained until recovery of the T1 to 100% baseline. Non-invasive blood pressure, heart rate, peripheral oxygen saturation (SpO2), and time to recovery of spontaneous breathing will be measured during the procedure. In addition the investigators will measure stimulation parameters used to initiate ECT, as well as the duration of seizure as well as the entire procedure time.

Conditions

• Neuromuscular Blockade
• ECT

Interventions

Type	Name	Description
DRUG	Succinylcholine	Succinylcholine will be given during the series of ECT treatments. The initial dose will be defined by the anesthesiologist in charge for clinical care. The Dixon's up and down method will be used in consecutive treatments. The investigators will switch to the second compound as soon as the patient has received one neuromuscular blocking agent dose that resulted in 'acceptable muscle relaxation', and another dose that resulted in 'unacceptable' conditions'.
DRUG	Rocuronium	Rocuronium will be given during the series of ECT treatments. The initial dose will be defined by the anesthesiologist in charge for clinical care. The Dixon's up and down method will be used in consecutive treatments.

Timeline

• Start date: 2011-05-01
• Primary completion: 2013-07-01
• Completion: 2015-02-01
• First posted: 2011-09-28
• Last updated: 2015-06-02
• Results posted: 2015-06-02

Locations

1 site across 1 country: United States