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Completed

NCT Number: NCT01037374

Anticipation of the Difficult Airway: the Preoperative Airway Assessment Form

The purpose of this study is to see if our experimental preoperative airway assessment form is a better indicator of difficult airway as compared to the anesthesia record that is presently used.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Memorial Hermann Hospital, Medical Center

Houston, Texas, 77030, United States

About this study

Predicting difficult airway continues to be problematic for even the most seasoned of anesthesiologists. In our study, the resident class will be our sample population. The residents will be randomly assigned into two groups: the experimental group will be utilizing the new preoperative airway assessment form and the control group will be utilizing the standard anesthesia record. Simultaneously, a subset of our anesthesia experts will also be assessing patients preoperatively. The five areas of difficult airway management will be considered: difficult mask ventilation, difficult supraglottic airway, difficult laryngoscopy, difficult intubation, and difficult surgical airway.

According to the American Society of Anesthesiologists, the incidence of intubation has remained stable throughout the 1980s and 1990s despite attempts to predict its occurrence. Many of these cases were considered to be preventable; therefore, a better prediction of and preparation for difficult airway management may lead to a reduction in adverse events.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • CA-1, CA-2, and CA-3 anesthesiology residents starting from July 2008-July 2010

Exclusion criteria

  • the same anesthesiology residents who are working with patients 17 and younger, patients who are already intubated, and patients undergoing emergent surgery.

Treatment and study plan

Preoperative assessment form

Other

(based on the american society of anesthesiologists)components of the form include: neck measurements; neck mobility; mallampati; wilson's test; pre-existing conditions; and predictions of difficult mask ventilation, supraglottic airway, laryngoscopy, intubation, and surgical airway.

Primary outcomes

  1. Use of an experimental preoperative assessment form by residents will result in more complete documentation of important airway features compared to use of the current forms

    Time frame: interim analysis will be assessed after 1 year

Secondary outcomes

  1. use of the experimental preoperative assessment form will result in greater resident recognition of patients at high risk for a difficult airway as judged independently by one of 3 senior faculty investigators.

    Time frame: interim analyses will be assessed after 1 year

  2. the percentage of patients intubated using an awake method will be greater among residents using the new form than those using the current form

    Time frame: interim analysis will be assessed after 1 year

  3. the percentage of patients requiring multiple intubation attempts or use of invasive airway techniques will be lower among residents using the new form.

    Time frame: interim analysis will be assessed after 1 year

  4. spontaneous knowledge of important airway features will be more complete among residents using the new form at 18 months of training.

    Time frame: interim analysis will be assessed after 1 year

  5. observations made during this study will allow refinement of the new form to augment the identification of patients with difficult airway.

    Time frame: interim analysis will be assessed after 1 year

Sponsors and collaborators

Lead sponsor

The University of Texas Health Science Center, Houston

Other

Collaborators

  • Foundation for Anesthesia Education and Research

Registry information

Official study title

Anticipation of the Difficult Airway: the Preoperative Airway Assessment Form as an Educational and Quality Improvement Tool

Important dates

Study start
2008
Primary completion
2012
Study completion
2012
First posted
Dec 23, 2009
Registry last updated
Sep 25, 2014

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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