• Br J Anaesth · Oct 2024

    Residual neuromuscular block in the postanaesthesia care unit: a single-centre prospective observational study and systematic review.

    • Veerle Bijkerk, Piet Krijtenburg, Tessa Verweijen, Jörgen Bruhn, Gert Jan Scheffer, Christiaan Keijzer, and Michiel C Warlé.
    • Department of Anaesthesiology, Radboud University Medical Centre, Nijmegen, The Netherlands Electronic address: veerle.bijkerk@radboudumc.nl.
    • Br J Anaesth. 2024 Oct 22.

    BackgroundConcerns regarding residual neuromuscular block (RNMB) have persisted since the introduction of neuromuscular blocking agents, with reported incidences in the 21st century up to 50%. Advances in neuromuscular transmission (NMT) monitoring and the introduction of sugammadex have addressed this issue, but the impact of these developments remains unclear.MethodsThis prospective observational study evaluated RNMB in 500 surgical patients in a large Dutch teaching hospital with readily available quantitative NMT monitoring and reversal agents. The anaesthetic technique and intraoperative NMT monitoring were independently chosen by the attending anaesthesiologist. Acceleromyography was performed upon arrival in the PACU for patients who received nondepolarising neuromuscular blocking agents. RNMB was defined as a train-of-four ratio (TOFR) <0.9. A systematic review was conducted to analyse trends in RNMB in contemporary practice.ResultsOut of 500 patients, 11 (2.2%) had a TOFR <0.9. Intraoperative NMT monitoring was performed in 77.6% of patients, and sugammadex was administered to 38% of patients. No patient received neostigmine. The only difference was an automatically recorded TOFR ≥0.9 at the end of surgery in 61.1% in the non-RNMB group compared with 18.2% in the RNMB group (P=0.009). Our systematic review identified incidences ranging from 3.5% to 53.3% since 2000, with a decreasing trend in Europe and North America.ConclusionsThe incidence of residual neuromuscular block in the PACU was 2.2%. This suggests significant improvement in the prevention of residual neuromuscular block and stresses the importance of rigorous neuromuscular transmission monitoring and adequate use of reversal agents.Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.

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