Anticipation of the Difficult Airway: the Preoperative Airway Assessment Form

Not Applicable

Completed

• Conditions: Endotracheal Intubation Risk Assessment
• Interventions: Other: Preoperative assessment form

• Registration Number: NCT01037374
• Lead Sponsor: The University of Texas Health Science Center, Houston

Brief Summary

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.

Detailed Description

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.

Study Timeline

• Study Start: 2008-08
• Study First Submitted: 2009-12-21
• Study First Submitted QC: 2009-12-21
• Study First Posted: 2009-12-23
• Primary Completion: 2012-12
• Study Completion: 2012-12
• Status Verified: 2014-09
• Last Update Submitted: 2014-09-23
• Last Update Posted: 2014-09-25

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 89

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.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Difficult Airway Assessment Form	Preoperative assessment form	-

Primary Outcome Measures

Name	Time	Method
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	interim analysis will be assessed after 1 year

Secondary Outcome Measures

Name	Time	Method
spontaneous knowledge of important airway features will be more complete among residents using the new form at 18 months of training.	interim analysis will be assessed after 1 year
the percentage of patients requiring multiple intubation attempts or use of invasive airway techniques will be lower among residents using the new form.	interim analysis will be assessed after 1 year
observations made during this study will allow refinement of the new form to augment the identification of patients with difficult airway.	interim analysis will be assessed after 1 year
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.	interim analyses will be assessed after 1 year
the percentage of patients intubated using an awake method will be greater among residents using the new form than those using the current form	interim analysis will be assessed after 1 year

Trial Locations

Locations (1)

Memorial Hermann Hospital, Medical Center; 🇺🇸 Houston, Texas, United States