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

30 maggio 2026 aggiornato da: 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.

Panoramica dello studio

Stato

Non ancora reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

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.

Tipo di studio

Interventistico

Iscrizione (Stimato)

62

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto
  • Adulto più anziano

Accetta volontari sani

No

Descrizione

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..

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Separare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: 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.
Comparatore attivo: 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.
Altri nomi:
  • Rocuronium for Intubation Only

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Mean Intraoperative Motor Evoked Potential Amplitude
Lasso di tempo: 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

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Successful Motor Evoked Potential Recording
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Collaboratori

Investigatori

  • Investigatore principale: Toan Thang Nguyen, MD, PhD, Associate Professor, Hanoi Medical University

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Stimato)

1 giugno 2026

Completamento primario (Stimato)

1 dicembre 2028

Completamento dello studio (Stimato)

1 dicembre 2028

Date di iscrizione allo studio

Primo inviato

30 maggio 2026

Primo inviato che soddisfa i criteri di controllo qualità

30 maggio 2026

Primo Inserito (Effettivo)

4 giugno 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

4 giugno 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

30 maggio 2026

Ultimo verificato

1 maggio 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

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

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Descrizione del piano 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.

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

prodotto fabbricato ed esportato dagli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .