ClinicalTrials.gg
Status unknownNCT03805282Updated Jan 15, 2019

Intravenous Lidocaine to Supress of Cough Reflex During Anesthesia Emergence

A Phase 3 interventional study of Lidocaine in Cough, sponsored by Brasilia University Hospital. Status unknown at 1 site in Brazil. Open to participants aged 18 Years to 120 Years. Per ClinicalTrials.gov, last updated 2019-01-15.

Sponsored by Brasilia University Hospital · Phase 3, Interventional, and Prevention

The sponsor has not verified this record recently (last verified Jan 2019), so the status shown — last known as Recruiting — may be out of date.
Phase
Phase 3
Study type
Interventional
Enrollment
132
Allocation
Randomized
Ages
18 Years to 120 Years
Sex
All
01

Study summary

Introduction: Although inflating tracheal cuff using lidocaine is effective for cough suppression, it may pressure tracheal cuff too much. Intravenous continuous infusion of lidocaine has emerged recently for most general anesthesia in the context of opioid-sparing anesthesia for cancer, but the 95% effective dose (ED95) for cough suppression during anesthesia emergence is not determined yet. Objective: the objectives of this study are to determine the ED95 of continuous infusion lidocaine for suppressing cough reflex during extubation by sex and age group.

Read the detailed description

Ideal patient weight in kg will be considered.

Initial dose will be 0.5mg/kg.h and dose-change steps of 0.5mg/kg.h will occur depending on the incidence of emergence cough in the previous patient of the same group:

  • It will increase if coughed in a probability of 95%
  • It will decrease if not coughed in a probability of 5%.
  • It will remain the same otherwise. Maximum dose will be 3mg/kg.h. All patients will receive remifentanil 0.025mcg/kg.min continuous infusion until extubation.

Patients groups will be determined by sex and age group (18-60 or >60 years old), therefore, four independent groups will be studied:

  • Female 18 to 60 years old
  • Male 18 to 60 years old
  • Female > 60 years old
  • Male > 60 years old
02

Conditions studied

  • Cough

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Keywords

  • general anesthesia
  • cough
  • anesthesia emergence
  • lidocaine
03

In context

Cough

427 studies on the registry are indexed under Cough; 67 are open to participants now.

This study's planned enrollment of 132 is above the median of 80 across 319 interventional studies indexed under Cough.

Browse Cough studies →

Lead sponsor

Brasilia University Hospital is the lead sponsor of 20 studies on the registry; none are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 120 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

  • Understands study risks and benefits, signs .
  • Not pregnant.
  • Not an airway surgery
  • No acute or chronic respiratory disease.
  • Non smoker
  • No chronic cough

Exclusion criteria

Exclusion Criteria:

  • Any protocol violation.
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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
132 participants (estimated)

Study arms

  • Experimental
    Female 18 to 60 years old

    This adaptive dose-finding group will receive continuous infusion lidocaine using the biased coin method for finding the 95% effective dose (ED95%) for cough suppression. All patients will also receive remifentanil 0.025mcg/kg.h during emergence.

    Drug: Lidocaine

  • Active comparator
    Male 18 to 60 years old

    This adaptive dose-finding group will receive continuous infusion lidocaine using the biased coin method for finding the 95% effective dose (ED95%) for cough suppression. All patients will also receive remifentanil 0.025mcg/kg.h during emergence.

    Drug: Lidocaine

  • Active comparator
    Male > 60 years old

    This adaptive dose-finding group will receive continuous infusion lidocaine using the biased coin method for finding the 95% effective dose (ED95%) for cough suppression. All patients will also receive remifentanil 0.025mcg/kg.h during emergence.

    Drug: Lidocaine

  • Active comparator
    Female > 60 years old

    This adaptive dose-finding group will receive continuous infusion lidocaine using the biased coin method for finding the 95% effective dose (ED95%) for cough suppression. All patients will also receive remifentanil 0.025mcg/kg.h during emergence.

    Drug: Lidocaine

Interventions

  • Continuous infusion, variable dose of lidocaine.

    Also known as: Xylocaine

06

What researchers measure

Primary outcomes

  1. Cough during anesthesia emergence

    Dichotomic variable, true if any cough is detected from anesthesia weaning to extubation.

    Time frame: Anytime during anesthesia emergence, before extubation.

07

Study locations

1 of 1 sites recruiting
  • Hospital Universitario de Brasilia
    Brasília, Distrito Federal 70000000, Brazil
    Recruiting
08

References and documents

Individual participant data

Plan to share: Yes — we will make IPD available in www.anestesiologiaunb.com.br

Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report, Analytic code

Time frame: In a year following the study

Access criteria: Open

Data sharing details ↗ · www.anestesiologiaunb.com.br

No publications or documents are linked to this record.

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

Started Mar 2018 (actual). Primary completion is estimated for Dec 2019, 21 months after the start.

Of 18 phase 3 interventional studies under Cough, half reached primary completion within 27 months of starting (the median), counting those still running; a quarter within 15 and three quarters within 37. This study's planned 21 months is below that.

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

Registered
Dec 26, 2017
First posted
Jan 15, 2019
StartActual
Mar 1, 2018
Primary completionEst.
Dec 15, 2019
CompletionEst.
Dec 31, 2019
Last update
Jan 15, 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 Jan 15, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03805282
Lead sponsor
Brasilia University Hospital
Responsible party
Gabriel Magalhaes Nunes Guimaraes (Head of Anesthesiology, Brasilia University Hospital) — Principal investigator
First posted
Jan 15, 2019
Start date
Mar 1, 2018
Primary completion
Dec 15, 2019 (estimated)
Completion
Dec 31, 2019 (estimated)
Last update
Jan 15, 2019

Study contacts

Gabriel MN Guimaraes, MSc
Contact
gabrielmng@gmail.com
+55 61 996455997

Oversight

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

Not currently enrolling

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

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Studies of the drug tested here: Lidocaine

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