Diffuse Apneic OxygenationENDAONCT02737917
EmergeNcy Department Apneic Oxygenation Versus Usual Care During Rapid Sequence Intubation
A study testing Oxygen in people with Diffuse Apneic Oxygenation, run by New York City Health and Hospitals Corporation at 1 site in United States.
Trial summary
To determine the impact, if any the application of oxygen during the apnea period of rapid sequence intubation has on patients being intubated in the emergency department. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Diffuse Apneic Oxygenation
- What is being tested?
- Oxygen
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 206 participants
- Where
- 1 siteUnited States
- Study dates
- May 2016to Dec 2016
- Phase
- Interventional
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Any patient greater than 18 years of age that presents to the Lincoln medical and Mental Health Center Emergency Department requiring endotracheal intubation.
Who cannot join
- Patients will be excluded from the primary outcome analysis, but included in the intention to treat analysis for the secondary outcome if they are not pre-oxygenated to the standard RSI protocol of 3 minutes with 100% fraction of inspired oxygen (FiO2) by means of bag valve mask, HFNC and/or non-rebreather; patients will be excluded from the study in general if they are in cardiac or traumatic arrest or they are intubated without an apneic period (awake intubation)
Trial locations and contacts
1 site in 1 country.
About this study
Official title: EmergeNcy Department Apneic Oxygenation Versus Usual Care During Rapid Sequence Intubation : A Randomized Controlled Trial (The ENDAO Trial)
To determine the impact, if any the application of oxygen during the apnea period of rapid sequence intubation has on patients being intubated in the emergency department.
Read the detailed description
Hypoxia may occur during rapid sequence intubation (RSI) of emergency department patients (1-4). This condition may increase the risk of the patient suffering a cardiac arrest secondary to securing the airway. A part of RSI is pre-oxygenation, which is defined as placing the patient on 100% fraction of inspired O2 for 3 minutes prior to administering the induction agents (i.e. sedative and neuromuscular blocker) in order to increase the amount of oxygen present in the functional residual capacity of the patients lungs to prolong oxygen saturating during the apneic period of endotracheal intubation (5-9). In the last decade, physicians have developed a process known as diffuse apneic oxygenation (DAO) in order to mitigate the risk of oxygen desaturation during this apneic period. The process entails leaving the patient on high flow nasal cannula (HFNC) oxygen during the act of visualizing the vocal cords and placing the endotracheal tube. Over the years the practice has started to become more common in emergency departments, operating rooms and ICU's all over the world. Recently, a randomized controlled trial (called The FELLOW Trial) of this practice demonstrated no difference in desaturation rates between those patients that received DAO and those that did not (usual practice) in patients in the ICU (10). Some have commented that the findings of this study cannot be applied to emergency department patients, and so evidence is lacking in regards to this population.
Purpose of the study:
Although studies have started to investigate the efficacy of DAO in preventing desaturation during RSI, evidence is still lacking in the emergency department patient population. The primary question being asked is: does diffuse apneic oxygenation increase the average lowest arterial oxygen saturation during rapid sequence intubation when compared to usual care? Secondary question being asked is: does diffuse apneic oxygenation decrease the incidence of desaturation in general, as well as hypoxemia and severe hypoxemia? The third question being asked is: does diffuse apneic oxygenation increase the time to desaturation?
- Conditions
- Diffuse Apneic Oxygenation
- Being tested
- Oxygen, Standard of care
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
OxygenOther
15 L of oxygen will be delivered to the patient by nasal cannula during the apnea period of rapid sequence intubation.
Standard of careOther
Rapid sequence intubation
| Study group | Role | What they receive |
|---|---|---|
| Diffuse apneic oxygenation | Experimental | This group of patients will receive the standard of care treatment of rapid sequence intubation (pre-oxygenation, induction and intubation) plus the application of oxygen. Receives: Other: Oxygen; Other: Standard of care |
| Usual care | Other | This group of patients will receive the standard of care treatment of rapid sequence intubation (pre-oxygenation, induction and intubation) Receives: Other: Standard of care |
What is being measured
The primary outcome is the main question the study is designed to answer.
Mean (Average) Arterial Oxygen Saturation
the average oxygen saturation as measured by peripheral capillary oxygen saturation (SpO2)
Measured: within 2 minutes of confirmation of endotracheal tube placement
Secondary outcomes (1)
Rates of Desaturation
number of patients per group that desaturated to less than 90% and less than 80%
Measured: within 2 minutes of confirmation of endotracheal tube placement
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Apr 2016 (estimated)
- Study startMay 2016
- Primary completionDec 2016
- Study completionDec 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (11)Papers the sponsor has linked to this study.
- Other trials for Diffuse Apneic OxygenationStudies of the same condition, open and under way.
- 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 206 participants (actual)
Sponsor and investigators
- Lead sponsor
- New York City Health and Hospitals Corporation
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Sandra Scott, MD, Study chair, NYCHHC/Lincoln
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02737917
- Sponsor's protocol ID
- IRB #16-003
- Acronym
- ENDAO
- Status last verified
- Mar 2019
- First submitted
- 5 Apr 2016
- Last updated
- 19 Mar 2019
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- Individual data sharing
- No: No plan to make individual participant data available
Publications
Jaber S, Amraoui J, Lefrant JY, Arich C, Cohendy R, Landreau L, Calvet Y, Capdevila X, Mahamat A, Eledjam JJ. Clinical practice and risk factors for immediate complications of endotracheal intubation in the intensive care unit: a prospective, multiple-center study. Crit Care Med. 2006 Sep;34(9):2355-61. doi: 10.1097/01.CCM.0000233879.58720.87.
PubMed 16850003Griesdale DE, Bosma TL, Kurth T, Isac G, Chittock DR. Complications of endotracheal intubation in the critically ill. Intensive Care Med. 2008 Oct;34(10):1835-42. doi: 10.1007/s00134-008-1205-6. Epub 2008 Jul 5.
PubMed 18604519Simpson GD, Ross MJ, McKeown DW, Ray DC. Tracheal intubation in the critically ill: a multi-centre national study of practice and complications. Br J Anaesth. 2012 May;108(5):792-9. doi: 10.1093/bja/aer504. Epub 2012 Feb 6.
PubMed 22315326De Jong A, Molinari N, Terzi N, Mongardon N, Arnal JM, Guitton C, Allaouchiche B, Paugam-Burtz C, Constantin JM, Lefrant JY, Leone M, Papazian L, Asehnoune K, Maziers N, Azoulay E, Pradel G, Jung B, Jaber S; AzuRea Network for the Frida-Rea Study Group. Early identification of patients at risk for difficult intubation in the intensive care unit: development and validation of the MACOCHA score in a multicenter cohort study. Am J Respir Crit Care Med. 2013 Apr 15;187(8):832-9. doi: 10.1164/rccm.201210-1851OC.
PubMed 23348979Baillard C, Fosse JP, Sebbane M, Chanques G, Vincent F, Courouble P, Cohen Y, Eledjam JJ, Adnet F, Jaber S. Noninvasive ventilation improves preoxygenation before intubation of hypoxic patients. Am J Respir Crit Care Med. 2006 Jul 15;174(2):171-7. doi: 10.1164/rccm.200509-1507OC. Epub 2006 Apr 20.
PubMed 16627862Mort TC. Preoxygenation in critically ill patients requiring emergency tracheal intubation. Crit Care Med. 2005 Nov;33(11):2672-5. doi: 10.1097/01.ccm.0000187131.67594.9e.
PubMed 16276196Mort TC, Waberski BH, Clive J. Extending the preoxygenation period from 4 to 8 mins in critically ill patients undergoing emergency intubation. Crit Care Med. 2009 Jan;37(1):68-71. doi: 10.1097/CCM.0b013e318192845e.
PubMed 19050620Vourc'h M, Asfar P, Volteau C, Bachoumas K, Clavieras N, Egreteau PY, Asehnoune K, Mercat A, Reignier J, Jaber S, Prat G, Roquilly A, Brule N, Villers D, Bretonniere C, Guitton C. High-flow nasal cannula oxygen during endotracheal intubation in hypoxemic patients: a randomized controlled clinical trial. Intensive Care Med. 2015 Sep;41(9):1538-48. doi: 10.1007/s00134-015-3796-z. Epub 2015 Apr 14.
PubMed 25869405Weingart SD, Levitan RM. Preoxygenation and prevention of desaturation during emergency airway management. Ann Emerg Med. 2012 Mar;59(3):165-75.e1. doi: 10.1016/j.annemergmed.2011.10.002. Epub 2011 Nov 3.
PubMed 22050948Semler MW, Janz DR, Lentz RJ, Matthews DT, Norman BC, Assad TR, Keriwala RD, Ferrell BA, Noto MJ, McKown AC, Kocurek EG, Warren MA, Huerta LE, Rice TW; FELLOW Investigators; Pragmatic Critical Care Research Group. Randomized Trial of Apneic Oxygenation during Endotracheal Intubation of the Critically Ill. Am J Respir Crit Care Med. 2016 Feb 1;193(3):273-80. doi: 10.1164/rccm.201507-1294OC.
PubMed 26426458Ramachandran SK, Cosnowski A, Shanks A, Turner CR. Apneic oxygenation during prolonged laryngoscopy in obese patients: a randomized, controlled trial of nasal oxygen administration. J Clin Anesth. 2010 May;22(3):164-8. doi: 10.1016/j.jclinane.2009.05.006.
PubMed 20400000
Study at a glance
From the registry record, last updated by the sponsor on 19 Mar 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- EmergeNcy Department Apneic Oxygenation Versus Usual Care During Rapid Sequence Intubation : A Randomized Controlled Trial (The ENDAO Trial)
- ClinicalTrials.gov ID
- NCT02737917
- Acronym / sponsor ID
- ENDAO / IRB #16-003
- Conditions
- Diffuse Apneic Oxygenation
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 206 participants (actual)
- Lead sponsor
- New York City Health and Hospitals CorporationUniversity, hospital or other
- Study start
- May 2016
- Primary completion
- Dec 2016 (actual)
- Study completion
- Dec 2016 (actual)
- First posted
- 14 Apr 2016 (estimated)
- Results
- Posted 4 Mar 2019
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
To determine the impact, if any the application of oxygen during the apnea period of rapid sequence intubation has on patients being intubated in the emergency department.
Detailed description
Hypoxia may occur during rapid sequence intubation (RSI) of emergency department patients (1-4). This condition may increase the risk of the patient suffering a cardiac arrest secondary to securing the airway. A part of RSI is pre-oxygenation, which is defined as placing the patient on 100% fraction of inspired O2 for 3 minutes prior to administering the induction agents (i.e. sedative and neuromuscular blocker) in order to increase the amount of oxygen present in the functional residual capacity of the patients lungs to prolong oxygen saturating during the apneic period of endotracheal intubation (5-9). In the last decade, physicians have developed a process known as diffuse apneic oxygenation (DAO) in order to mitigate the risk of oxygen desaturation during this apneic period. The process entails leaving the patient on high flow nasal cannula (HFNC) oxygen during the act of visualizing the vocal cords and placing the endotracheal tube. Over the years the practice has started to become more common in emergency departments, operating rooms and ICU's all over the world. Recently, a randomized controlled trial (called The FELLOW Trial) of this practice demonstrated no difference in desaturation rates between those patients that received DAO and those that did not (usual practice) in patients in the ICU (10). Some have commented that the findings of this study cannot be applied to emergency department patients, and so evidence is lacking in regards to this population.
Purpose of the study:
Although studies have started to investigate the efficacy of DAO in preventing desaturation during RSI, evidence is still lacking in the emergency department patient population. The primary question being asked is: does diffuse apneic oxygenation increase the average lowest arterial oxygen saturation during rapid sequence intubation when compared to usual care? Secondary question being asked is: does diffuse apneic oxygenation decrease the incidence of desaturation in general, as well as hypoxemia and severe hypoxemia? The third question being asked is: does diffuse apneic oxygenation increase the time to desaturation?
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Diffuse apneic oxygenation | Experimental | Other: Oxygen, Other: Standard of careThis group of patients will receive the standard of care treatment of rapid sequence intubation (pre-oxygenation, induction and intubation) plus the application of oxygen. |
| Usual care | Other | Other: Standard of careThis group of patients will receive the standard of care treatment of rapid sequence intubation (pre-oxygenation, induction and intubation) |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Any patient greater than 18 years of age that presents to the Lincoln medical and Mental Health Center Emergency Department requiring endotracheal intubation.
Key exclusion criteria (1 listed)
- Patients will be excluded from the primary outcome analysis, but included in the intention to treat analysis for the secondary outcome if they are not pre-oxygenated to the standard RSI protocol of 3 minutes with 100% fraction of inspired oxygen (FiO2) by means of bag valve mask, HFNC and/or non-rebreather; patients will be excluded from the study in general if they are in cardiac or traumatic arrest or they are intubated without an apneic period (awake intubation)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Oxygen15 L of oxygen will be delivered to the patient by nasal cannula during the apnea period of rapid sequence intubation. | Other | Diffuse apneic oxygenation |
| Standard of careRapid sequence intubation | Other | Diffuse apneic oxygenation, Usual care |
Primary outcome
Mean (Average) Arterial Oxygen Saturation
Time frame: within 2 minutes of confirmation of endotracheal tube placement
the average oxygen saturation as measured by peripheral capillary oxygen saturation (SpO2)
1 secondary outcome
Rates of Desaturation
Time frame: within 2 minutes of confirmation of endotracheal tube placement
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Mar 2019.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 16850003Jaber S, Amraoui J, Lefrant JY, Arich C, Cohendy R, Landreau L, Calvet Y, Capdevila X, Mahamat A, Eledjam JJ. Clinical practice and risk factors for immediate complications of endotracheal intubation in the intensive care unit: a prospective, multiple-center study. Crit Care Med. 2006 Sep;34(9):2355-61. doi: 10.1097/01.CCM.0000233879.58720.87.
- Background: PubMed 18604519Griesdale DE, Bosma TL, Kurth T, Isac G, Chittock DR. Complications of endotracheal intubation in the critically ill. Intensive Care Med. 2008 Oct;34(10):1835-42. doi: 10.1007/s00134-008-1205-6. Epub 2008 Jul 5.
- Background: PubMed 22315326Simpson GD, Ross MJ, McKeown DW, Ray DC. Tracheal intubation in the critically ill: a multi-centre national study of practice and complications. Br J Anaesth. 2012 May;108(5):792-9. doi: 10.1093/bja/aer504. Epub 2012 Feb 6.
- Background: PubMed 23348979De Jong A, Molinari N, Terzi N, Mongardon N, Arnal JM, Guitton C, Allaouchiche B, Paugam-Burtz C, Constantin JM, Lefrant JY, Leone M, Papazian L, Asehnoune K, Maziers N, Azoulay E, Pradel G, Jung B, Jaber S; AzuRea Network for the Frida-Rea Study Group. Early identification of patients at risk for difficult intubation in the intensive care unit: development and validation of the MACOCHA score in a multicenter cohort study. Am J Respir Crit Care Med. 2013 Apr 15;187(8):832-9. doi: 10.1164/rccm.201210-1851OC.
- Background: PubMed 16627862Baillard C, Fosse JP, Sebbane M, Chanques G, Vincent F, Courouble P, Cohen Y, Eledjam JJ, Adnet F, Jaber S. Noninvasive ventilation improves preoxygenation before intubation of hypoxic patients. Am J Respir Crit Care Med. 2006 Jul 15;174(2):171-7. doi: 10.1164/rccm.200509-1507OC. Epub 2006 Apr 20.
- Background: PubMed 16276196Mort TC. Preoxygenation in critically ill patients requiring emergency tracheal intubation. Crit Care Med. 2005 Nov;33(11):2672-5. doi: 10.1097/01.ccm.0000187131.67594.9e.
- Background: PubMed 19050620Mort TC, Waberski BH, Clive J. Extending the preoxygenation period from 4 to 8 mins in critically ill patients undergoing emergency intubation. Crit Care Med. 2009 Jan;37(1):68-71. doi: 10.1097/CCM.0b013e318192845e.
- Background: PubMed 25869405Vourc'h M, Asfar P, Volteau C, Bachoumas K, Clavieras N, Egreteau PY, Asehnoune K, Mercat A, Reignier J, Jaber S, Prat G, Roquilly A, Brule N, Villers D, Bretonniere C, Guitton C. High-flow nasal cannula oxygen during endotracheal intubation in hypoxemic patients: a randomized controlled clinical trial. Intensive Care Med. 2015 Sep;41(9):1538-48. doi: 10.1007/s00134-015-3796-z. Epub 2015 Apr 14.
- Background: PubMed 22050948Weingart SD, Levitan RM. Preoxygenation and prevention of desaturation during emergency airway management. Ann Emerg Med. 2012 Mar;59(3):165-75.e1. doi: 10.1016/j.annemergmed.2011.10.002. Epub 2011 Nov 3.
- Background: PubMed 26426458Semler MW, Janz DR, Lentz RJ, Matthews DT, Norman BC, Assad TR, Keriwala RD, Ferrell BA, Noto MJ, McKown AC, Kocurek EG, Warren MA, Huerta LE, Rice TW; FELLOW Investigators; Pragmatic Critical Care Research Group. Randomized Trial of Apneic Oxygenation during Endotracheal Intubation of the Critically Ill. Am J Respir Crit Care Med. 2016 Feb 1;193(3):273-80. doi: 10.1164/rccm.201507-1294OC.
- Background: PubMed 20400000Ramachandran SK, Cosnowski A, Shanks A, Turner CR. Apneic oxygenation during prolonged laryngoscopy in obese patients: a randomized, controlled trial of nasal oxygen administration. J Clin Anesth. 2010 May;22(3):164-8. doi: 10.1016/j.jclinane.2009.05.006.
- Individual participant dataSharing planned: No. No plan to make individual participant data available
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.
Sandra Scott, MD study chair
NYCHHC/Lincoln
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Oxygen in people with Diffuse Apneic Oxygenation, run by New York City Health and Hospitals Corporation at 1 site in United States.
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 1 inclusion and 1 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 19 Mar 2019. 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 United States. 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?
Yes. Results are posted in the registry (first posted 4 Mar 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
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?
Mean (Average) Arterial Oxygen Saturation (time frame: within 2 minutes of confirmation of endotracheal tube placement). 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 NCT02737917, which also lists 11 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 19 Mar 2019; AzTrials last refreshed its copy on 6 Nov 2026.