Obesity Female Patients Require General Anaesthesia With Intubation and Atracurium CurarizationCINTROINCT04808440
Intubation Conditions With Atracurium After Three Minutes
An observational study of Obesity Female Patients Require General Anaesthesia With Intubation and Atracurium Curarization, run by Assistance Publique - Hôpitaux de Paris at 1 site in France.
Trial summary
The purpose of this study is to evaluate intubation conditions with the use of atracurium after a fixed three-minute delay Read more about this study
- Who is it for?
- Ages 18 years and older, women only
- Conditions the study is for
- Obesity Female Patients Require General Anaesthesia With Intubation and Atracurium Curarization
- How many people
- 100 participants
- Where
- 1 siteFrance
- Study dates
- 23 Mar 2021to 7 Sep 2021
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Women only
- No healthy volunteers
- Adult, Older adult
Study population: Adults, no morbid obesity female patients, without risk factors for difficult tracheal intubation (ref IOT difficile) scheduled for gynaecologic surgery were prospectively included in this observational and monocentric study.
Who may be able to join
- Adult female
- Patient to undergo general anesthesia with intubation for scheduled gynecological surgery
- Patient informed about the study and not opposed to it
Who cannot join
- Patients with severe and morbid obesity (BMI>35kg/m2)
- Pregnancy
- Patients with difficult intubation
- Allergy to atracurium and to any other drug used.
- Patient under tutorship / curatorship
- Not affiliated with social insurance
- Patient with AME
Trial locations and contacts
1 site in 1 country.
France1 site
Service Anesthésie Réanimation Chirurgicale Hôpital Cochin
Paris, 75014
About this study
Official title: Evaluation of Intubation Conditions With the Use of Atracurium After a Fixed Three-minute Delay
The purpose of this study is to evaluate intubation conditions with the use of atracurium after a fixed three-minute delay
Read the detailed description
The recommended dose of a non-depolarizing curare to facilitate tracheal intubation is twice the active dose 95 (the dose that reduces muscle force by 95%). At this dosage, curarization of the laryngeal adductors allowing relaxation and abduction (opening) of the vocal cords is considered certain. With atracurium, the dose for intubation is 0.5 mg.kg-1 and the time to full effect is approximately 3 minutes. With the use of newer hypnotics, there are no data evaluating the conditions for intubation after a fixed time of 3 minutes as with current anesthetic practices.
- Conditions
- Obesity Female Patients Require General Anaesthesia With Intubation and Atracurium Curarization
- Keywords
- Tracheal intubation, Atracurium
What is being measured
The primary outcome is the main question the study is designed to answer.
Intubation condition
The intubating conditions were evaluated on the basis of the consensus conference on Good Clinical Research Practice in Pharmacodynamic Studies of Neuromuscular Blocking Agents. The score used include the following variables: (1) ease of laryngoscopy, (2) vocal cord position, and (3) reaction to the insertion of the endotracheal tube and the cuff inflation (eg, diaphragmatic movement due to patient cough). Each of these variables was rated as (1) excellent, (2) good, or (3) poor. Intubating conditions were scored as excellent if all variables were excellent; the score was good if at least 1 variable was good and the rest were excellent; the conditions were considered poor if any of the variables was rated poor.
Evaluation of intubation conditions with the use of atracurium after a fixed three-minute delay
Measured: 3 minutes after atracurium injection
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Mar 2021
- Study start23 Mar 2021
- Primary completion7 Sep 2021
- Study completion7 Sep 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (4)Papers the sponsor has linked to this study.
- Other trials for Obesity Female Patients Require General Anaesthesia With Intubation and Atracurium CurarizationStudies of the same condition, open and under way.
- More trials run by Assistance Publique - Hôpitaux de ParisThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 100 participants (actual)
Sponsor and investigators
- Lead sponsor
- Assistance Publique - Hôpitaux de Paris
- Sponsor type
- University, hospital or other
- Collaborators
- URC-CIC Paris Descartes Necker Cochin
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04808440
- Sponsor's protocol ID
- APHP201463
- Acronym
- CINTROI
- Status last verified
- Sep 2025
- First submitted
- 19 Mar 2021
- Last updated
- 12 Sep 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Debaene B, Beaussier M, Meistelman C, Donati F, Lienhart A. Monitoring the onset of neuromuscular block at the orbicularis oculi can predict good intubating conditions during atracurium-induced neuromuscular block. Anesth Analg. 1995 Feb;80(2):360-3. doi: 10.1097/00000539-199502000-00026.
PubMed 7818124Fuchs-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.
PubMed 17635389Plaud B, Baillard C, Bourgain JL, Bouroche G, Desplanque L, Devys JM, Fletcher D, Fuchs-Buder T, Lebuffe G, Meistelman C, Motamed C, Raft J, Servin F, Sirieix D, Slim K, Velly L, Verdonk F, Debaene B. Guidelines on muscle relaxants and reversal in anaesthesia. Anaesth Crit Care Pain Med. 2020 Feb;39(1):125-142. doi: 10.1016/j.accpm.2020.01.005. Epub 2020 Jan 8.
PubMed 31926308Baillard C, Tamrabet C, Ben Abdallah S, Toussaint S, Cheurfa C. Sample size considerations for studies comparing intubating conditions using quantitative monitoring versus a fixed interval during onset of neuromuscular blockade. Anaesth Crit Care Pain Med. 2022 Dec;41(6):101154. doi: 10.1016/j.accpm.2022.101154. Epub 2022 Sep 7.
PubMed 36087697
Study at a glance
From the registry record, last updated by the sponsor on 12 Sep 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation of Intubation Conditions With the Use of Atracurium After a Fixed Three-minute Delay
- ClinicalTrials.gov ID
- NCT04808440
- Acronym / sponsor ID
- CINTROI / APHP201463
- Conditions
- Obesity Female Patients Require General Anaesthesia With Intubation and Atracurium Curarization
- Keywords
- Tracheal intubation, Atracurium
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 100 participants (actual)
- Lead sponsor
- Assistance Publique - Hôpitaux de ParisUniversity, hospital or other
- Collaborators
- URC-CIC Paris Descartes Necker Cochin
- Study start
- 23 Mar 2021 (actual)
- Primary completion
- 7 Sep 2021 (actual)
- Study completion
- 7 Sep 2021 (actual)
- First posted
- 22 Mar 2021 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to evaluate intubation conditions with the use of atracurium after a fixed three-minute delay
Detailed description
The recommended dose of a non-depolarizing curare to facilitate tracheal intubation is twice the active dose 95 (the dose that reduces muscle force by 95%). At this dosage, curarization of the laryngeal adductors allowing relaxation and abduction (opening) of the vocal cords is considered certain. With atracurium, the dose for intubation is 0.5 mg.kg-1 and the time to full effect is approximately 3 minutes. With the use of newer hypnotics, there are no data evaluating the conditions for intubation after a fixed time of 3 minutes as with current anesthetic practices.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Adults, no morbid obesity female patients, without risk factors for difficult tracheal intubation (ref IOT difficile) scheduled for gynaecologic surgery were prospectively included in this observational and monocentric study.
Key inclusion criteria (3 listed)
- Adult female
- Patient to undergo general anesthesia with intubation for scheduled gynecological surgery
- Patient informed about the study and not opposed to it
Key exclusion criteria (7 listed)
- Patients with severe and morbid obesity (BMI>35kg/m2)
- Pregnancy
- Patients with difficult intubation
- Allergy to atracurium and to any other drug used.
- Patient under tutorship / curatorship
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Intubation condition
Time frame: 3 minutes after atracurium injection
The intubating conditions were evaluated on the basis of the consensus conference on Good Clinical Research Practice in Pharmacodynamic Studies of Neuromuscular Blocking Agents. The score used include the following variables: (1) ease of laryngoscopy, (2) vocal cord position, and (3) reaction to the insertion of the endotracheal tube and the cuff inflation (eg, diaphragmatic movement due to patient cough). Each of these variables was rated as (1) excellent, (2) good, or (3) poor. Intubating conditions were scored as excellent if all variables were excellent; the score was good if at least 1 variable was good and the rest were excellent; the conditions were considered poor if any of the variables was rated poor. Evaluation of intubation conditions with the use of atracurium after a fixed three-minute delay
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Sep 2025.
- Background: PubMed 7818124Debaene B, Beaussier M, Meistelman C, Donati F, Lienhart A. Monitoring the onset of neuromuscular block at the orbicularis oculi can predict good intubating conditions during atracurium-induced neuromuscular block. Anesth Analg. 1995 Feb;80(2):360-3. doi: 10.1097/00000539-199502000-00026.
- Background: PubMed 17635389Fuchs-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.
- Background: PubMed 31926308Plaud B, Baillard C, Bourgain JL, Bouroche G, Desplanque L, Devys JM, Fletcher D, Fuchs-Buder T, Lebuffe G, Meistelman C, Motamed C, Raft J, Servin F, Sirieix D, Slim K, Velly L, Verdonk F, Debaene B. Guidelines on muscle relaxants and reversal in anaesthesia. Anaesth Crit Care Pain Med. 2020 Feb;39(1):125-142. doi: 10.1016/j.accpm.2020.01.005. Epub 2020 Jan 8.
- Results publication: PubMed 36087697Baillard C, Tamrabet C, Ben Abdallah S, Toussaint S, Cheurfa C. Sample size considerations for studies comparing intubating conditions using quantitative monitoring versus a fixed interval during onset of neuromuscular blockade. Anaesth Crit Care Pain Med. 2022 Dec;41(6):101154. doi: 10.1016/j.accpm.2022.101154. Epub 2022 Sep 7.
- Individual participant dataSharing planned: No
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Obesity Female Patients Require General Anaesthesia With Intubation and Atracurium Curarization, run by Assistance Publique - Hôpitaux de Paris at 1 site in France.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 12 Sep 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Intubation condition (time frame: 3 minutes after atracurium injection). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04808440, which also lists 4 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Sep 2025.