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CompletedNCT05762068PDADelphiUpdated Feb 28, 2024

Expert Consensus Statements for the Management of a Physiologically Difficult Airway Using the Delphi Method (PDADelphi)

An observational study in Intubation; Difficult or Failed, Intubation Complication and Hemodynamic Instability, sponsored by University of Texas Southwestern Medical Center. Completed at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-02-28.

Sponsored by University of Texas Southwestern Medical Center · Observational

Study type
Observational
Model
Other
Time perspective
Other
Enrollment
35
Ages
18 Years and older
Sex
All
01

Study summary

The aim of this study is to review/identify the existing definition and management strategies for a physiologically difficult airway (PDA), to generate expert consensus on the various aspects of managing a patient with a PDA using the Delphi method, and to provide guidance to clinicians worldwide on safe tracheal intubation practices in patients with PDA to help improve patient outcomes.

Read the detailed description

The Delphi method involves the following 4 steps:

Step 1: Establishing a preliminary list of broad domains

A focused literature review was performed by select membership of the Society of Critical Care Anesthesiologists (SOCCA), and based on their input, the steering committee identified six broad domains, which were used to draft statements for Round one of the Delphi process.

List of domains:

  1. Definitions of PDA
  2. Preparing the team for airway management in a patient with PDA
  3. Preparing the patient with a PDA for success with airway management
  4. Performing tracheal intubation
  5. Post-intubation care
  6. Areas of Future Research

Step 2: Preparation of the Delphi Round One Survey The list of questions related to the above-mentioned domains will be sent to the Experts as a Delphi questionnaire. The anonymity of the Experts will be maintained during the Delphi rounds. The Experts would be requested to answer questions related to PDA based on their experience and knowledge of the subject. The questions will be multiple choice or in the form of a 7-point Likert scale (strongly agree, agree, somewhat agree, neither agree nor disagree, somewhat disagree, disagree, strongly disagree). The experts can also provide their opinion on addition, deletion on questions or choices through free-text. The responses of experts will be collated during the analysis of results and shared in the following survey as controlled feedback.

Step 3: Subsequent Delphi Rounds The steering committee will review the results of round one. The statements listed will be modified, deleted, or added if found ambiguous based on the feedback and comments of the results. The remaining statements will be continued in the subsequent rounds until consensus is achieved (>80% of respondents). The summary results of round two will be presented to experts, and the survey process will be repeated with the modified questionnaire. The Delphi rounds will be continued till desired consensus and stability is achieved for statements. The steering committee will also check the stability using chi-square test of the statements from Round 3 onwards and statement is said to be stable if p-value is > 0.05 for two consecutive rounds.

Step 4: Final Consensus The summary results of the last stable round will be used to issue the consensus on the various statements related to the above-mentioned domains. The results of the final survey, consensus statements, and the manuscript will be circulated among the experts for approval before submission for publication.

02

Conditions studied

  • Intubation; Difficult or Failed
  • Intubation Complication
  • Hemodynamic Instability
  • Critical Illness

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Keywords

  • Tracheal intubation
  • Difficult airway
  • Physiologically Difficult Airway
  • Critical Illness
03

In context

Critical Illness

1,881 studies on the registry are indexed under Critical Illness; 461 are open to participants now.

This study's enrollment of 35 is below the median of 132 across 867 observational studies indexed under Critical Illness.

Browse Critical Illness studies →

Lead sponsor

University of Texas Southwestern Medical Center is the lead sponsor of 990 studies on the registry; 201 are open to participants now.

Of its 135 completed or terminated interventional studies of FDA-regulated products, 101 (75%) have results posted.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Experts must meet the following three criteria:

Clinical expertise in the airway management of critically ill patients, teaching experience in airway management, and have/had research projects and/or publications in airway management

Inclusion criteria

  • Clinical expertise in the airway management of critically ill patients
  • Teaching experience in airway management
  • Research projects and/or publications in airway management

Exclusion criteria

Exclusion Criteria:

  • People don't meet the inclusion criteria
05

Study design

Observational model
Other
Time perspective
Other
Enrollment
35 participants (actual)
Patient registry
No

Groups and cohorts

  • Airway management experts

    The Steering Committee selected Experts from across the globe based on pre-defined criteria and will conduct iterative Delphi rounds to generate consensus among the experts.

    Other: Delphi procedure

Interventions

  • OtherDelphi procedure

    The study involves generating consensus statements by experts on airway management in critically ill patients on the definition and management of a physiologically difficult airway (PDA) using a Delphi process.

06

What researchers measure

Primary outcomes

  1. Consensus statements

    Consensus amongst the expert panel regarding physiologically difficult airway (PDA) management will be achieved using Delphi method which includes iterative rounds of questions. Consensus will be considered reached when a statement achieves \>80% of votes for multiple-choice questions and \>70% for Likert-scale statements.

    Time frame: Through study completion, an average of 12 months

07

Study locations

1 site
  • University of Texas Southwestern Medical Center
    Dallas, Texas 75225, United States
08

References and documents

Publications

  • Mosier JM, Joshi R, Hypes C, Pacheco G, Valenzuela T, Sakles JC. The Physiologically Difficult Airway. West J Emerg Med. 2015 Dec;16(7):1109-17. doi: 10.5811/westjem.2015.8.27467. Epub 2015 Dec 8. PubMed 26759664 ↗
  • Myatra SN, Divatia JV, Brewster DJ. The physiologically difficult airway: an emerging concept. Curr Opin Anaesthesiol. 2022 Apr 1;35(2):115-121. doi: 10.1097/ACO.0000000000001102. PubMed 35165233 ↗
  • Russotto V, Myatra SN, Laffey JG, Tassistro E, Antolini L, Bauer P, Lascarrou JB, Szuldrzynski K, Camporota L, Pelosi P, Sorbello M, Higgs A, Greif R, Putensen C, Agvald-Ohman C, Chalkias A, Bokums K, Brewster D, Rossi E, Fumagalli R, Pesenti A, Foti G, Bellani G; INTUBE Study Investigators. Intubation Practices and Adverse Peri-intubation Events in Critically Ill Patients From 29 Countries. JAMA. 2021 Mar 23;325(12):1164-1172. doi: 10.1001/jama.2021.1727. Erratum In: JAMA. 2021 Jun 22;325(24):2507. doi: 10.1001/jama.2021.9012. PubMed 33755076 ↗
  • Karamchandani K, Wheelwright J, Yang AL, Westphal ND, Khanna AK, Myatra SN. Emergency Airway Management Outside the Operating Room: Current Evidence and Management Strategies. Anesth Analg. 2021 Sep 1;133(3):648-662. doi: 10.1213/ANE.0000000000005644. PubMed 34153007 ↗
  • Kornas RL, Owyang CG, Sakles JC, Foley LJ, Mosier JM; Society for Airway Management's Special Projects Committee. Evaluation and Management of the Physiologically Difficult Airway: Consensus Recommendations From Society for Airway Management. Anesth Analg. 2021 Feb 1;132(2):395-405. doi: 10.1213/ANE.0000000000005233. PubMed 33060492 ↗
  • Diamond IR, Grant RC, Feldman BM, Pencharz PB, Ling SC, Moore AM, Wales PW. Defining consensus: a systematic review recommends methodologic criteria for reporting of Delphi studies. J Clin Epidemiol. 2014 Apr;67(4):401-9. doi: 10.1016/j.jclinepi.2013.12.002. PubMed 24581294 ↗
  • Nasa P, Jain R, Juneja D. Delphi methodology in healthcare research: How to decide its appropriateness. World J Methodol. 2021 Jul 20;11(4):116-129. doi: 10.5662/wjm.v11.i4.116. eCollection 2021 Jul 20. PubMed 34322364 ↗

Individual participant data

Plan to share: Undecided

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 28, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05762068
Lead sponsor
University of Texas Southwestern Medical Center
Responsible party
Kunal Karamchandani (Associate Professor, University of Texas Southwestern Medical Center) — Principal investigator
First posted
Mar 9, 2023
Start date
Apr 1, 2023
Primary completion
Dec 31, 2023
Completion
Feb 20, 2024
Last update
Feb 28, 2024

Study contacts

Kunal Karamchandani, MD
principal investigator · UT Southwestern Medical Center

Oversight

Data monitoring committee
No
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 Feb 2024. You cannot join it, but the record below documents what was studied.

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