Ultrasonography Clinical Trial
— SDEIDIOfficial title:
Real-time Sonography as an Auxiliary Approach to Detect Inadvertent Esophageal Intubation Before Ventilation Among Suspected Difficult Intubation Patients: a Randomized Control Study
Early detection of esophageal intubation, one of the most common complications while performing endotracheal intubation (ETI), is crucial to adequate airway management, especially among patients suspected of difficult intubation (DI). Detective approaches with ventilation require time, increase the risk of emesis and aspiration to patients, and increase the risk of particle aerosolization to health providers under the epidemic of aerosol-borne diseases. Our study will determine the effectiveness of real-time sonography assisted to direct visualization to detect esophageal intubation before ventilation among DI patients.
Status | Not yet recruiting |
Enrollment | 278 |
Est. completion date | September 20, 2022 |
Est. primary completion date | September 20, 2022 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: - Aged above 18 years old. - Requiring elective orotracheal intubation under general anesthesia in the OR. - Suspected DI according to airway assessments ,and with low risk of difficult ventilation. - Planning to use a Macintosh laryngoscope blade on the first attempt, whether direct or video laryngoscopy. - Signed written informed consent. - Willingness for the primary anesthesia team to participate. Exclusion Criteria: - Anterior neck lesions, masses, lacerations, or subcutaneous emphysema. - A history of neck operation or tracheotomy. - Allergies to ultrasound coupling gel. |
Country | Name | City | State |
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n/a |
Lead Sponsor | Collaborator |
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Peking Union Medical College Hospital |
Brown CA 3rd, Bair AE, Pallin DJ, Walls RM; NEAR III Investigators. Techniques, success, and adverse events of emergency department adult intubations. Ann Emerg Med. 2015 Apr;65(4):363-370.e1. doi: 10.1016/j.annemergmed.2014.10.036. Epub 2014 Dec 20. Erratum in: Ann Emerg Med. 2017 May;69(5):540. — View Citation
Das SK, Choupoo NS, Haldar R, Lahkar A. Transtracheal ultrasound for verification of endotracheal tube placement: a systematic review and meta-analysis. Can J Anaesth. 2015 Apr;62(4):413-23. doi: 10.1007/s12630-014-0301-z. Epub 2014 Dec 24. Review. — View Citation
Gottlieb M, Holladay D, Burns KM, Nakitende D, Bailitz J. Ultrasound for airway management: An evidence-based review for the emergency clinician. Am J Emerg Med. 2020 May;38(5):1007-1013. doi: 10.1016/j.ajem.2019.12.019. Epub 2019 Dec 11. Review. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | The specificity. | The detected negative/ true negative. According to the purpose of the proposed study, we will define esophageal intubation as positive, and endotracheal intubation as negative. In group direct visualization, positive and negative are defined as absent and present visualization of the tracheal tube passing through the glottis, respectively. In group ultrasonography assisted direct visualization, positive is defined as sonography detection of esophageal dilation or "double-tract" sign, and negative is defined as direct visualization of the tracheal tube passing through the glottis. If neither the specific US nor the clear visualization is noted, the intubator and the sonographer will discuss and reach a consistent conclusion in three seconds. | Upon or within three minutes of performing intubation. | |
Secondary | The sensitivity. | The detected positive/ true positive. According to the purpose of the proposed study, we will define esophageal intubation as positive, and endotracheal intubation as negative. In group direct visualization, positive and negative are defined as absent and present visualization of the tracheal tube passing through the glottis, respectively. In the group using ultrasonography-assisted direct visualization, positive is defined as sonography detection of esophageal dilation or "double-tract" sign, and negative is defined as direct visualization of the tracheal tube passing through the glottis. If neither the specific US nor the clear visualization is noted, the intubator and the sonographer will discuss and reach a consistent conclusion in three seconds. | Upon or within three minutes of performing intubation. | |
Secondary | The positive likelihood ratio. | The positive likelihood ratio is calculated as sensitivity/(1 - specificity). According to the purpose of the proposed study, we will define esophageal intubation as positive, and endotracheal intubation as negative. In group direct visualization, positive and negative are defined as absent and present visualization of the tracheal tube passing through the glottis, respectively. In the group using ultrasonography-assisted direct visualization, positive is defined as sonography detection of esophageal dilation or "double-tract" sign, and negative is defined as direct visualization of the tracheal tube passing through the glottis. If neither the specific US nor the clear visualization is noted, the intubator and the sonographer will discuss and reach a consistent conclusion in three seconds. | Upon or within three minutes of performing intubation. | |
Secondary | The negative likelihood ratio. | The negative likelihood ratio is calculated as (1 - sensitivity)/specificity. According to the purpose of the proposed study, we will define esophageal intubation as positive, and endotracheal intubation as negative. In group direct visualization, positive and negative are defined as absent and present visualization of the tracheal tube passing through the glottis, respectively. In the group using ultrasonography-assisted direct visualization, positive is defined as sonography detection of esophageal dilation or "double-tract" sign, and negative is defined as direct visualization of the tracheal tube passing through the glottis. If neither the specific US nor the clear visualization is noted, the intubator and the sonographer will discuss and reach a consistent conclusion in three seconds. | Upon or within three minutes of performing intubation. | |
Secondary | The diagnostic odds ratio. | Positive likelihood ratios/Negative likelihood ratio. According to the purpose of the proposed study, we will define esophageal intubation as positive, and endotracheal intubation as negative. In group direct visualization, positive and negative are defined as absent and present visualization of the tracheal tube passing through the glottis, respectively. In the group using ultrasonography-assisted direct visualization, positive is defined as sonography detection of esophageal dilation or "double-tract" sign, and negative is defined as direct visualization of the tracheal tube passing through the glottis. If neither the specific US nor the clear visualization is noted, the intubator and the sonographer will discuss and reach a consistent conclusion in three seconds. | Upon or within three minutes of performing intubation. | |
Secondary | The positive predictive value. | Cases of true positive among detective positive/ cases of detective positive. According to the purpose of the proposed study, we will define esophageal intubation as positive, and endotracheal intubation as negative. In group direct visualization, positive and negative are defined as absent and present visualization of the tracheal tube passing through the glottis, respectively. In the group using ultrasonography-assisted direct visualization, positive is defined as sonography detection of esophageal dilation or "double-tract" sign, and negative is defined as direct visualization of the tracheal tube passing through the glottis. If neither the specific US nor the clear visualization is noted, the intubator and the sonographer will discuss and reach a consistent conclusion in three seconds. | Upon or within three minutes of performing intubation. | |
Secondary | The negative predictive value | Cases of true negative among detective negative/ cases of detective negative. According to the purpose of the proposed study, we will define esophageal intubation as positive, and endotracheal intubation as negative. In group direct visualization, positive and negative are defined as absent and present visualization of the tracheal tube passing through the glottis, respectively. In the group using ultrasonography-assisted direct visualization, positive is defined as sonography detection of esophageal dilation or "double-tract" sign, and negative is defined as direct visualization of the tracheal tube passing through the glottis. If neither the specific US nor the clear visualization is noted, the intubator and the sonographer will discuss and reach a consistent conclusion in three seconds. | Upon or within three minutes of performing intubation. | |
Secondary | The detective self-confidence grade | The detective self-confidence grade will be provided on a four-point scale of 1=" unsure", 2=" less sure", 3=" quite sure", and 4=" sure". | Upon or within three minutes of performing intubation. |
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