Comparative Study of TetraGraph and Mechanomiograph Neuromuscular Monitors in Clinical Settings
NCT ID: NCT06792058
Last Updated: 2025-01-24
Study Results
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Basic Information
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COMPLETED
20 participants
OBSERVATIONAL
2024-01-02
2024-12-31
Brief Summary
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Methods: Twenty cases were conducted during general surgeries requiring neuromuscular relaxation. Ulnar nerve was stimulated via the Tetragraph which detected the compound muscle action potential (CMAP) of adductor pollicis muscle. Simultaneously on the same arm the isometric force of the same stimulated muscle was registrated by the MMG and displayed in the Labchart 8 program. Bland-Altman analysis was used to describe the agreement between devices during distinct phases of neuromuscular blockade. The primary endpoint of the study was the comparison of TOF values of MMG and EMG during induction. In recovery, two groups were made from TOFRs: below and above the recommended muscle recovery to exclude PRNB (TOFR≥90%) (Fuchs-Buder 2023). Additionally, in deeper neuromuscular blockade Train-of-Four Count (TOFC), and Post-Tetanic Count (PTC) values were also analysed.
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Detailed Description
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Conditions
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Study Design
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OTHER
PROSPECTIVE
Study Groups
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20 surgical patients
20 patients undergoing surgical procedures and receiving muscle relaxation
Mechanomiograph: The "gold standard" of quantitative monitoring
The "gold standard" of quantitative monitoring is mechanomyography (MMG), which measures the force of contraction of the adductor pollicis muscle following ulnar nerve stimulation. MMG responses are accurate and reproducible. However, the complex and bulky devices are only suitable for research use, are not suitable for clinical use and are not commercially available.
Electromiograph
Another type of monitor is the electromyograph, which can be seen as an alternative to mechanomyography because of its accuracy. This technique measures muscle activity as a summation of the action potentials of muscle fibres. This activity is proportional to the strength of the muscle contraction. The most commonly innervated nerve is also the ulnar nerve, which innervates the abductor digiti minimi and the first dorsalis interosseus muscles. During the measurements, electrical signals from these muscles are detected. EMG has several advantages over other monitoring techniques. It does not require immobilisation of the hand, thumb immobility is not a problem, no preload is required, and hypothermia does not affect the hand as much as other neuromuscular monitors. The TetraGraph (Senzime AB, Sweden) is a portable EMG-based neuromuscular minitor for which the manufacturers received marketing approval from the U.S. Food and Drug Administration (FDA) in 2019.
Interventions
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Mechanomiograph: The "gold standard" of quantitative monitoring
The "gold standard" of quantitative monitoring is mechanomyography (MMG), which measures the force of contraction of the adductor pollicis muscle following ulnar nerve stimulation. MMG responses are accurate and reproducible. However, the complex and bulky devices are only suitable for research use, are not suitable for clinical use and are not commercially available.
Electromiograph
Another type of monitor is the electromyograph, which can be seen as an alternative to mechanomyography because of its accuracy. This technique measures muscle activity as a summation of the action potentials of muscle fibres. This activity is proportional to the strength of the muscle contraction. The most commonly innervated nerve is also the ulnar nerve, which innervates the abductor digiti minimi and the first dorsalis interosseus muscles. During the measurements, electrical signals from these muscles are detected. EMG has several advantages over other monitoring techniques. It does not require immobilisation of the hand, thumb immobility is not a problem, no preload is required, and hypothermia does not affect the hand as much as other neuromuscular monitors. The TetraGraph (Senzime AB, Sweden) is a portable EMG-based neuromuscular minitor for which the manufacturers received marketing approval from the U.S. Food and Drug Administration (FDA) in 2019.
Eligibility Criteria
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Inclusion Criteria
* ASA (American Society of Anesthesiology) physical status I-III.
* Informed written consent.
* Surgery requires the use of a moderate-duration muscle relaxant.
Exclusion Criteria
* Medication affecting neuromuscular transmission.
* Open wound or rash due to electrode position
* Expected difficult intubation.
* Pregnancy, breast-feeding.
* Implanted pacemaker
18 Years
ALL
No
Sponsors
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University of Debrecen
OTHER
Responsible Party
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Tamas Vegh, MD
MD PhD
Principal Investigators
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László Asztalos, PhD
Role: STUDY_DIRECTOR
University of Debrecen, Faculty of Medicine, Department of Anaesthesiology and Intensive Care
Locations
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University of Debrecen, Department of Anesthesiology and Intensive Care
Debrecen, Hajdú-Bihar, Hungary
Countries
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References
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Fuchs-Buder T, Claudius C, Skovgaard LT, Eriksson LI, Mirakhur RK, Viby-Mogensen J; 8th International Neuromuscular Meeting. Good clinical research practice in pharmacodynamic studies of neuromuscular blocking agents II: the Stockholm revision. Acta Anaesthesiol Scand. 2007 Aug;51(7):789-808. doi: 10.1111/j.1399-6576.2007.01352.x.
Sato H, Iwasaki H, Doshu-Kajiura A, Katagiri S, Takagi S, Luthe SK, Suzuki T. Comparison of two electromyography-based neuromuscular monitors, AF-201P and TetraGraph, in rocuronium-induced neuromuscular block: A prospective comparative study. Anaesth Crit Care Pain Med. 2022 Dec;41(6):101145. doi: 10.1016/j.accpm.2022.101145. Epub 2022 Aug 31.
Nemes R, Lengyel S, Nagy G, Hampton DR, Gray M, Renew JR, Tassonyi E, Fulesdi B, Brull SJ. Ipsilateral and Simultaneous Comparison of Responses from Acceleromyography- and Electromyography-based Neuromuscular Monitors. Anesthesiology. 2021 Oct 1;135(4):597-611. doi: 10.1097/ALN.0000000000003896.
Kopman AF, Justo MD, Mallhi MU, Abara CE, Neuman GG. The influence of changes in hand temperature on the indirectly evoked electromyogram of the first dorsal interosseous muscle. Can J Anaesth. 1995 Dec;42(12):1090-5. doi: 10.1007/BF03015094.
Engbaek J, Skovgaard LT, Friis B, Kann T, Viby-Mogensen J. Monitoring of the neuromuscular transmission by electromyography (I). Stability and temperature dependence of evoked EMG response compared to mechanical twitch recordings in the cat. Acta Anaesthesiol Scand. 1992 Aug;36(6):495-504. doi: 10.1111/j.1399-6576.1992.tb03506.x.
Naguib M, Brull SJ, Johnson KB. Conceptual and technical insights into the basis of neuromuscular monitoring. Anaesthesia. 2017 Jan;72 Suppl 1:16-37. doi: 10.1111/anae.13738.
Naguib M, Kopman AF, Ensor JE. Neuromuscular monitoring and postoperative residual curarisation: a meta-analysis. Br J Anaesth. 2007 Mar;98(3):302-16. doi: 10.1093/bja/ael386.
Todd MM, Hindman BJ, King BJ. The implementation of quantitative electromyographic neuromuscular monitoring in an academic anesthesia department. Anesth Analg. 2014 Aug;119(2):323-331. doi: 10.1213/ANE.0000000000000261.
Murphy GS, Szokol JW, Marymont JH, Greenberg SB, Avram MJ, Vender JS. Residual neuromuscular blockade and critical respiratory events in the postanesthesia care unit. Anesth Analg. 2008 Jul;107(1):130-7. doi: 10.1213/ane.0b013e31816d1268.
Berg H, Roed J, Viby-Mogensen J, Mortensen CR, Engbaek J, Skovgaard LT, Krintel JJ. Residual neuromuscular block is a risk factor for postoperative pulmonary complications. A prospective, randomised, and blinded study of postoperative pulmonary complications after atracurium, vecuronium and pancuronium. Acta Anaesthesiol Scand. 1997 Oct;41(9):1095-1103. doi: 10.1111/j.1399-6576.1997.tb04851.x.
Arbous MS, Meursing AE, van Kleef JW, de Lange JJ, Spoormans HH, Touw P, Werner FM, Grobbee DE. Impact of anesthesia management characteristics on severe morbidity and mortality. Anesthesiology. 2005 Feb;102(2):257-68; quiz 491-2. doi: 10.1097/00000542-200502000-00005.
Eriksson LI. Reduced hypoxic chemosensitivity in partially paralysed man. A new property of muscle relaxants? Acta Anaesthesiol Scand. 1996 May;40(5):520-3. doi: 10.1111/j.1399-6576.1996.tb04482.x.
Sundman E, Witt H, Olsson R, Ekberg O, Kuylenstierna R, Eriksson LI. The incidence and mechanisms of pharyngeal and upper esophageal dysfunction in partially paralyzed humans: pharyngeal videoradiography and simultaneous manometry after atracurium. Anesthesiology. 2000 Apr;92(4):977-84. doi: 10.1097/00000542-200004000-00014.
Eriksson LI, Sato M, Severinghaus JW. Effect of a vecuronium-induced partial neuromuscular block on hypoxic ventilatory response. Anesthesiology. 1993 Apr;78(4):693-9. doi: 10.1097/00000542-199304000-00012.
Related Links
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The tetragraph manufacturer's website.
Other Identifiers
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AITT 2023/10
Identifier Type: -
Identifier Source: org_study_id
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