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Low-Dose Rocuronium Maintenance During Spine Surgery With Intraoperative Neurophysiological Monitoring (ROC-IONM)

30. května 2026 aktualizováno: Nguyen Toan Thang, Bach Mai Hospital

A Randomized Controlled Trial Comparing Low-Dose Rocuronium Maintenance Versus Discontinuation After Induction on Motor Evoked Potential Quality During Spine Surgery With Intraoperative Neurophysiological Monitoring

This randomized controlled trial will compare two strategies for rocuronium use during general anesthesia for spine surgery with intraoperative neurophysiological monitoring. Participants undergoing spine surgery under general anesthesia with motor evoked potential and/or somatosensory evoked potential monitoring will be randomized to either low-dose rocuronium maintenance targeting a train-of-four ratio of 0.60 to less than 0.90, or no rocuronium maintenance after induction.

The main objective is to compare the effects of these two strategies on the quality of intraoperative neurophysiological monitoring, especially motor evoked potential signals. Secondary objectives include comparing surgical field conditions, unwanted patient movement, emergence and extubation times, early respiratory events, and new postoperative neurological deficits.

The study will be conducted at the Center for Anesthesia and Surgical Intensive Care, Bach Mai Hospital, Hanoi, Vietnam. The planned sample size is 62 participants, with 31 participants in each group.

Přehled studie

Postavení

Zatím nenabíráme

Podmínky

Intervence / Léčba

Detailní popis

Intraoperative neurophysiological monitoring is commonly used during complex spine surgery to help detect early neurological injury. Motor evoked potentials are particularly sensitive to neuromuscular blockade. Avoiding maintenance neuromuscular blockade may improve motor evoked potential signal quality, but may increase the risk of unwanted patient movement and suboptimal surgical field conditions. Conversely, low-dose rocuronium maintenance may improve surgical conditions, but may reduce motor evoked potential amplitude if neuromuscular blockade is excessive.

This trial will evaluate whether low-dose rocuronium maintenance, titrated by quantitative neuromuscular monitoring, can preserve intraoperative neurophysiological monitoring quality while improving surgical field conditions compared with discontinuation of rocuronium after induction.

All participants will receive standardized total intravenous anesthesia with propofol-based maintenance, bispectral index monitoring, quantitative train-of-four monitoring, and intraoperative neurophysiological monitoring. Rocuronium will be administered for tracheal intubation in both groups. In the low-dose maintenance group, rocuronium will be titrated to maintain a train-of-four ratio from 0.60 to less than 0.90. In the no-maintenance group, no additional rocuronium will be given after induction unless predefined safety rescue is required.

The primary outcome will be intraoperative motor evoked potential signal quality, including mean motor evoked potential amplitude. Secondary outcomes will include successful motor evoked potential recording, motor evoked potential warning events, somatosensory evoked potential stability, surgical field condition, unwanted patient movement, time to emergence, time to extubation, early postoperative respiratory events, and new postoperative neurological deficits.

Typ studie

Intervenční

Zápis (Odhadovaný)

62

Fáze

  • Nelze použít

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní kontakt

  • Jméno: Duc Minh Tran, MD
  • Telefonní číslo: 84589916666 84869319291
  • E-mail: tdminh1312@gmail.com

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

  • Dospělý
  • Starší dospělý

Přijímá zdravé dobrovolníky

Ne

Popis

Inclusion Criteria:

- 1. Patients aged 18 years or older. 2. Patients scheduled for spine surgery under general anesthesia. 3. Patients undergoing spine surgery with intraoperative neurophysiological monitoring, including motor evoked potentials and/or somatosensory evoked potentials.

4. Patients who agree to participate in the study and provide written informed consent.

Exclusion Criteria:

  • 1. Pre-existing central or peripheral neurological disease that may affect intraoperative neurophysiological monitoring, such as quadriplegia, persistent sensory disorder, sequelae of stroke, or polyneuropathy.

    2. History of epilepsy or electroencephalographic disorder. 3. Use of neuropsychiatric drugs, strong sedatives, or drugs affecting neuromuscular or neurological conduction within 48 hours before surgery.

    4. Decompensated cardiovascular disease or severe respiratory disease that may affect emergence or anesthetic drug metabolism.

    5. Contraindication to intraoperative neurophysiological monitoring. 6. Contraindication to rocuronium. 7. Refusal to participate or withdrawal of consent at any time..

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

  • Primární účel: Léčba
  • Přidělení: Randomizované
  • Intervenční model: Paralelní přiřazení
  • Maskování: Singl

Zbraně a zásahy

Skupina účastníků / Arm
Intervence / Léčba
Experimentální: Low-Dose Rocuronium Maintenance
Participants in this group will receive rocuronium for tracheal intubation followed by low-dose rocuronium maintenance during surgery. Rocuronium will be titrated using quantitative train-of-four monitoring to maintain a train-of-four ratio from 0.60 to less than 0.90. All participants will receive standardized total intravenous anesthesia and intraoperative neurophysiological monitoring.
Rocuronium will be administered for tracheal intubation and then maintained at a low dose during surgery. The infusion will be titrated according to quantitative train-of-four monitoring to maintain a train-of-four ratio from 0.60 to less than 0.90.
Aktivní komparátor: No Rocuronium Maintenance After Induction
Participants in this group will receive rocuronium for tracheal intubation only. No maintenance rocuronium will be administered after induction. Additional rocuronium may be given only as predefined safety rescue if clinically necessary. All participants will receive standardized total intravenous anesthesia and intraoperative neurophysiological monitoring.
Rocuronium will be administered only for tracheal intubation during induction of anesthesia. No maintenance rocuronium will be administered after induction, except for predefined safety rescue if clinically necessary.
Ostatní jména:
  • Rocuronium for Intubation Only

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Mean Intraoperative Motor Evoked Potential Amplitude
Časové okno: From baseline intraoperative neurophysiological monitoring after patient positioning to the final intraoperative neurophysiological monitoring recording before wound closure
Mean intraoperative motor evoked potential amplitude, measured in microvolts, recorded from predefined target muscles during spine surgery. The mean of three consecutive technically acceptable responses will be used at standardized intraoperative time points after stabilization of anesthesia and physiologic parameters.
From baseline intraoperative neurophysiological monitoring after patient positioning to the final intraoperative neurophysiological monitoring recording before wound closure

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Successful Motor Evoked Potential Recording
Časové okno: During surgery
Proportion of participants with successful intraoperative motor evoked potential recording from at least one predefined target muscle.
During surgery
Motor Evoked Potential Warning Events
Časové okno: During surgery
Number of intraoperative motor evoked potential warning events, defined as a decrease of 50 percent or more in amplitude from baseline lasting more than 5 minutes and not attributable to surgical manipulation after correction of physiologic and technical factors.
During surgery
Surgical Field Condition
Časové okno: During surgery
Surgical field condition assessed using the Leiden-Surgical Rating Scale, ranging from 1 to 5, with higher scores indicating better surgical conditions.
During surgery
Unwanted Patient Movement
Časové okno: During surgery
Occurrence and number of unwanted patient movement events that affect surgical manipulation or require anesthetic or neuromuscular blockade adjustment.
During surgery
Time to Extubation
Časové okno: From discontinuation of maintenance anesthesia to tracheal extubation
Time from discontinuation of maintenance anesthetic infusion to safe tracheal extubation, measured in minutes.
From discontinuation of maintenance anesthesia to tracheal extubation
New Postoperative Neurological Deficit
Časové okno: Post-anesthesia care unit and 24 to 48 hours after surgery
Occurrence of new postoperative motor or sensory neurological deficit assessed in the post-anesthesia care unit and within 24 to 48 hours after surgery.
Post-anesthesia care unit and 24 to 48 hours after surgery
Somatosensory Evoked Potential Stability
Časové okno: During surgery
Proportion of intraoperative monitoring time without significant somatosensory evoked potential changes, defined as latency increase of 10 percent or more or amplitude decrease of 50 percent or more from baseline lasting more than 5 minutes and not attributable to surgical manipulation.
During surgery
Time to Emergence
Časové okno: From discontinuation of maintenance anesthesia to eye opening on verbal command
Time from discontinuation of maintenance anesthetic infusion to eye opening on verbal command, measured in minutes.
From discontinuation of maintenance anesthesia to eye opening on verbal command
Early Postoperative Respiratory Events
Časové okno: During emergence and within 60 minutes after arrival in the post-anesthesia care unit
Occurrence of early respiratory events, including oxygen desaturation below 92 percent, laryngospasm, bronchospasm, sputum obstruction, or delayed extubation due to respiratory muscle weakness.
During emergence and within 60 minutes after arrival in the post-anesthesia care unit

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Sponzor

Spolupracovníci

Vyšetřovatelé

  • Vrchní vyšetřovatel: Toan Thang Nguyen, MD, PhD, Associate Professor, Hanoi Medical University

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia (Odhadovaný)

1. června 2026

Primární dokončení (Odhadovaný)

1. prosince 2028

Dokončení studie (Odhadovaný)

1. prosince 2028

Termíny zápisu do studia

První předloženo

30. května 2026

První předloženo, které splnilo kritéria kontroly kvality

30. května 2026

První zveřejněno (Aktuální)

4. června 2026

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

4. června 2026

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

30. května 2026

Naposledy ověřeno

1. května 2026

Více informací

Termíny související s touto studií

Další identifikační čísla studie

  • HMU-BMH-ROC-IONM-2025-01
  • 225/BM-HDDD (Jiný identifikátor: Ethics Committee of Bach Mai Hospital)
  • 6513/QD-DHYHN (Jiný identifikátor: Hanoi Medical University)

Plán pro data jednotlivých účastníků (IPD)

Plánujete sdílet data jednotlivých účastníků (IPD)?

NE

Popis plánu IPD

Individual participant data will not be publicly shared because the study involves sensitive clinical and perioperative data. Data are protected by privacy and ethical restrictions. De-identified aggregate data may be available from the corresponding author upon reasonable request and with approval from the relevant ethics committee.

Informace o lécích a zařízeních, studijní dokumenty

Studuje lékový produkt regulovaný americkým FDA

Ne

Studuje produkt zařízení regulovaný americkým úřadem FDA

Ne

produkt vyrobený a vyvážený z USA

Ne

Tyto informace byly beze změn načteny přímo z webu clinicaltrials.gov. Máte-li jakékoli požadavky na změnu, odstranění nebo aktualizaci podrobností studie, kontaktujte prosím register@clinicaltrials.gov. Jakmile bude změna implementována na clinicaltrials.gov, bude automaticky aktualizována i na našem webu .