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CompletedNCT03487003LMA_MRUpdated Oct 25, 2019

Muscle Relaxants on Efficacy of LMA Insertion

An interventional study of rocuronium and saline in Anesthesia Intubation Complication, sponsored by Daegu Catholic University Medical Center. Completed at 1 site in Korea, Republic of. Open to participants aged 2 Years to 7 Years. Per ClinicalTrials.gov, last updated 2019-10-25.

Sponsored by Daegu Catholic University Medical Center · Not applicable, Interventional, and Supportive care

Phase
Not applicable
Study type
Interventional
Enrollment
128
Allocation
Randomized
Ages
2 Years to 7 Years
Sex
All
01

Study summary

The use of laryngeal mask airway (LMA) is increasing in pediatric anesthesia because it provides lesser direct mechanical stimulation of the airway due to being placed above the larynx. However, LMA insertion can be more difficult in children than in adults due to their unique characteristics of pediatric airway. Neuromuscular blocking agents, so-called, muscle relaxants have long been used to facilitate insertion of airway devices. But there are pros and cons for the efficacy of muscle relaxants in LMA insertion, and most studies were investigated in adults.

02

Conditions studied

  • Anesthesia Intubation Complication

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Keywords

  • laryngeal mask airway
  • children, preschool
  • muscle relaxant
03

In context

Muscle Hypotonia

66 studies on the registry are indexed under Muscle Hypotonia; 14 are open to participants now.

This study's enrollment of 128 is above the median of 49 across 43 interventional studies indexed under Muscle Hypotonia.

Browse Muscle Hypotonia studies →

Lead sponsor

Daegu Catholic University Medical Center is the lead sponsor of 28 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
2 Years to 7 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Children aged between 2 and 7 years of physical status (ASA PS) I or II who are planned to receive ophthalmic surgery under general anesthesia

Exclusion criteria

Exclusion Criteria:

  • Refusal of consent
  • Present URI or other respiratory symptoms
  • Oro or facial anomaly
  • Poor dental condition
  • who cannot open their mouth or limited mouth opening
  • when the tracheal intubation is definitely needed
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

ASA physical status

The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.

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Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
128 participants (actual)

Study arms

  • Active comparator
    MR group

    When the patients asleep, 0.3 mg/kg rocuronium is administered.

    Drug: rocuronium

  • Experimental
    NMR group

    When the patients asleep, 0.3 mg/kg saline is administered.

    Drug: saline

Interventions

  • After standard anesthetic monitoring (non-invasive blood pressure monitor, pulse oximetry, 3-lead echocardiography), patients are inhaled with sevoflurane. When the patients asleep, 0.3 mg/kg rocuronium is administered. After 2 min, flexible laryngeal mask airway (fLMA) is inserted using standard method. The fLMA is inflated with air to 40 cmH2O using manometry. The oropharyngeal leak pressure (OLP) was determined by the method described by Lopez-Gil and colleagues.

    Also known as: Rocuronium bromide

  • Drugsaline

    After standard anesthetic monitoring (non-invasive blood pressure monitor, pulse oximetry, 3-lead echocardiography), patients are inhaled with sevoflurane. When the patients asleep, 0.3 mg/kg saline is administered. After 2 min, flexible laryngeal mask airway (fLMA) is inserted using standard method. The fLMA is inflated with air to 40 cmH2O using manometry. The oropharyngeal leak pressure (OLP) was determined by the method described by Lopez-Gil and colleagues

    Also known as: 0.9% normal saline

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What researchers measure

Primary outcomes

  1. Oropharyngeal leak pressure (OLP)

    It was determined by the method describe by Lopez-Gil and colleagues. Briefly, it was measured by closing the expiratory valve of the circle system at a fixed gas flow of 3l/min, recording the airway pressure at which audible leak sound was heard.

    Time frame: During 1 min after successful LMA intubation

Secondary outcomes

  1. Intubation time

    from the time of mouth opening until the time at square-wave capnography was detected

    Time frame: During 5-10 min after inhalation of sevoflurane

  2. Ease of intubation/mask bagging

    After successful LMA insertion, investigator recorded subjective difficulty during whole period of LMA manipulation by Likert scale: 1, easy 2, moderate, and 3: difficult.

    Time frame: During 5-10 min after inhalation of sevoflurane

  3. Fiberoptic view of LMA

    The fibreoptic view was assessed by fibreoptic bronchoscopy through the LMA and graded.

    Time frame: During 5min after successful LMA insertion

  4. Mean blood pressure

    mean blood pressure (mmHg) is recorded before and after the insertion of LMA.

    Time frame: During 5-10 min after inhalation of sevoflurane

  5. Heart rate

    Heart rate is (beat per minutes) recorded before and after the insertion of LMA.

    Time frame: During 5-10 min after inhalation of sevoflurane

  6. Watcha scale every 10 min from time to PACU admission to discharge

    On arrival and every 10 min after PACU admission, patients were checked Watcha scale as following 4-point scale 1. calm 2. crying, but can be consoled 3. Crying, cannot be consoled 4. Agitated and thrashing around

    Time frame: During 60 minutes after PACU admission

  7. FLACC score on initial, 10, 20, and 30 min

    Face, legs, activity, cry, and consolability (FLACC) score is checked every 10min after PACU admission

    Time frame: During 60 minutes after PACU admission

  8. Eye opening time

    defined as the interval from the cessation of anesthetics to eye opening

    Time frame: During 1 hour after operation

  9. Extubation time

    time from discontinuation of anesthetics to extubation

    Time frame: During 1 hour after operation

  10. Peak inspiratory pressure before and after the surgery

    check the peak inspiratory pressure (cmH2O) before and at the end of surgery

    Time frame: During 4 hour after anesthetic inhalation

  11. Tidal volume ratio before and after the surgery

    check the expiratory tidal volume/setting tidal volume ratio before and at the end of surgery

    Time frame: During 4 hour after anesthetic inhalation

  12. Respiratory adverse events

    check the adverse events during emergence and PACU stay such as coughing, laryngospasm, bronchospasm, postoperative stridor and mild desaturation; SpO2 \<95%.

    Time frame: During 1 hour after operation

  13. Postoperative complications

    check the adverse events including respiratory adverse events, gastric insufflation, excessive secretion, postoperative nausea and vomiting, sore throat, and tinged blood on LMA surface.

    Time frame: During 1 hour after operation

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Study locations

1 site
  • Daegu Catholic University Medical Center
    Daegu, 42472, Korea, Republic of
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References and documents

Publications

  • Gong YH, Yi J, Zhang Q, Xu L. Effect of low dose rocuronium in preventing ventilation leak for flexible laryngeal mask airway during radical mastectomy. Int J Clin Exp Med. 2015 Aug 15;8(8):13616-21. eCollection 2015. PubMed 26550303 ↗
  • von Ungern-Sternberg BS, Boda K, Chambers NA, Rebmann C, Johnson C, Sly PD, Habre W. Risk assessment for respiratory complications in paediatric anaesthesia: a prospective cohort study. Lancet. 2010 Sep 4;376(9743):773-83. doi: 10.1016/S0140-6736(10)61193-2. PubMed 20816545 ↗
  • Ghai B, Wig J. Comparison of different techniques of laryngeal mask placement in children. Curr Opin Anaesthesiol. 2009 Jun;22(3):400-4. doi: 10.1097/aco.0b013e3283294d06. PubMed 19434792 ↗
  • Hattori K, Komasawa N, Miyazaki Y, Kido H, Deguchi S, Minami T. Muscle relaxant facilitates i-gel insertion by novice doctors: A prospective randomized controlled trial. J Clin Anesth. 2016 Sep;33:218-22. doi: 10.1016/j.jclinane.2016.03.058. Epub 2016 May 4. PubMed 27555168 ↗
  • Chen BZ, Tan L, Zhang L, Shang YC. Is muscle relaxant necessary in patients undergoing laparoscopic gynecological surgery with a ProSeal LMA? J Clin Anesth. 2013 Feb;25(1):32-5. doi: 10.1016/j.jclinane.2012.06.004. Epub 2012 Nov 2. PubMed 23122973 ↗
  • Byun SH, Kim SJ, Kim E. Comparison of the clinical performance of the flexible laryngeal mask airway in pediatric patients under general anesthesia with or without a muscle relaxant: study protocol for a randomized controlled trial. Trials. 2019 Jan 9;20(1):31. doi: 10.1186/s13063-018-3141-2. PubMed 30626406 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Apr 2018 to primary completion in Jul 2019, 15 months.

Of 17 interventional studies with no phase under Muscle Hypotonia, half reached primary completion within 16 months of starting (the median), counting those still running; a quarter within 7 and three quarters within 28. This study's 15 months is close to that.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 15, 2018
First posted
Apr 3, 2018
StartActual
Apr 20, 2018
Primary completionActual
Jul 30, 2019
CompletionActual
Jul 31, 2019
Last update
Oct 25, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 25, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03487003
Lead sponsor
Daegu Catholic University Medical Center
Responsible party
Eugene Kim (Assistant professor, Daegu Catholic University Medical Center) — Principal investigator
First posted
Apr 3, 2018
Start date
Apr 20, 2018
Primary completion
Jul 30, 2019
Completion
Jul 31, 2019
Last update
Oct 25, 2019

Study contacts

Eugene Kim, MD, PhD
study chair · Assistant professor

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Oct 2019. You cannot join it, but the record below documents what was studied.

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