Residual neuromuscular block: lessons unlearned. Part I: definitions, incidence, and adverse physiologic effects of residual neuromuscular block.
Glenn S Murphy, Sorin J Brull
https://pubmed.ncbi.nlm.nih.gov/20442260Actively Recruiting
Led by Ankara University · Updated on 2026-02-12
199
Participants Needed
1
Research Sites
N/A
Total Duration
Researchers are evaluating the use of two different methods to monitor recovery from deep neuromuscular blockade during surgery. This study focuses on comparing the traditional train-of-four ratio (cTOFR) and a modified train-of-four ratio (mTOFR) to see which better indicates safe extubation when reversing blockade with the drug sugammadex. The study is observational and addresses concerns about postoperative complications caused by residual neuromuscular block after anesthesia. Participants will undergo anesthesia involving rocuronium to induce muscle relaxation, followed by monitoring with the TOFscan device, which measures neuromuscular function. Sugammadex will be administered to reverse the blockade, and researchers will record classical and modified TOF ratios until full recovery is confirmed. The anesthesia process includes specific medication dosing, monitoring with multiple devices, and maintaining muscle relaxation at targeted levels during surgery. During the study, participants will be closely monitored with ECG, blood pressure, oxygen levels, brain activity, and acceleromyography. Neuromuscular function will be assessed repeatedly until reversal is complete. Data on drug use, TOF ratios, and recovery times will be collected. The primary outcome is the time measured up to 15 minutes, with a secondary outcome at 30 minutes. Participants will be observed until both TOF ratios reach 100%, ensuring complete neuromuscular recovery.
CONDITIONS
Comparison of the Performances of the cTOFR and the mTOFR During Reversal of Deep Neuromuscular Blockade With Sugammadex
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Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Up to the duration of surgery and immediate post-surgery period
Participants are monitored during surgery with TOFscan to observe neuromuscular function and record classical and modified Train-of-Four ratios while receiving rocuronium and sugammadex.
1 continuous monitoring session during surgery
Duration - Until full neuromuscular recovery (minutes after surgery)
Participants are observed in the operating room until neuromuscular function recovers fully, with TOFscan monitoring continuing until classical and modified TOF ratios reach 100%.
Continuous observation post-surgery
Total: 1 location
1
Ankara University
Ankara, Altındağ, Turkey (Türkiye), 06230
Actively Recruiting
H
Hatice Güneş Yeşilova, 1
M
Menekşe Özçelik, 2
Study Type
OBSERVATIONAL
Masking
N/A
Allocation
N/A
Model
N/A
Primary Purpose
N/A
Number of Arms
1
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