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ORIGINAL ARTICLE
Year : 2020  |  Volume : 21  |  Issue : 2  |  Page : 134-139

Do clinical signs of recovery from neuromuscular blockade compare reliably with objective parameters of train-of-four and double burst stimulation: An observational single-center study


1 Department of Anaesthesia and Critical Care, Command Hospital (Southern Command), Pune, Maharashtra, India
2 Department of Anaesthesia and Critical Care, Armed Forces Medical College, Pune, Maharashtra, India
3 Preventive and Social Medicine, Armed Forces Medical College, Pune, Maharashtra, India

Correspondence Address:
Dr. Saurabh Sud
Department of Anaesthesia and Critical Care, Command Hospital (Southern Command), Pune - 411 040, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/TheIAForum.TheIAForum_17_20

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Background: Recovery from neuromuscular blockade is commonly assessed by clinical signs. There exists wide disparity in what is recommended to monitor neuromuscular blockade and routine clinical practice by anesthesiologists. The objective signs of train-of-four (TOF) ratio of >0.9 and double burst stimulation (DBS) ratio of 1.0 indicate adequate neuromuscular function. This study was planned at a tertiary care hospital to evaluate the ongoing practice of assessing neuromuscular recovery employing clinical signs and comparing with simultaneous TOF and DBS values. Design: A cross-sectional analytical study. Methodology: A total of 100 consecutive patients undergoing surgical procedures lasting more than 1-h duration under general anesthesia with intermediate acting muscle relaxant were enrolled and data of 60 patients analyzed. After extubation, an independent observer recorded simultaneous TOF and DBS ratio using acceleromyography as the clinical signs of neuromuscular recovery (eye opening, tongue protrusion, head lift, sustained bite, hand grip strength, and ability to cough) were attained. Statistical Analysis: Statistical analysis was done utilizing SPSS version 20 (SPSS Inc., Chicago IL, USA) software. Continuous variables are expressed as mean (standard deviation) and Pearson's correlation coefficient was applied to study the correlation between the clinical parameters and quantitative measures of neuromuscular recovery. Results: There was a significant association between ability to retain tongue depressor (sustained bite), absent double vision and ability to cough effectively and TOF and DBS ratios (P < 0.05). None of the clinical signs correlated with TOF ratio >0.9 or DBS ratio of 1.0. Conclusion: Clinical signs of recovery fail to reliably predict postoperative residual paralysis compared to objective neuromuscular monitoring.


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