Recall and Perceived Applicability of Ganzouri Airway Scoring System Versus LEMON Score for Airway Assessment Among Anesthesia Residents

Comparison of Recall and Perceived Applicability of Ganzouri Airway Scoring System Versus LEMON Score for Airway Assessment Among Anesthesia Residents; a Prospective Observational Study

Our aim is to compare the recall and perceived clinical applicability of Ganzouri airway scoring system versus LEMON score for airway assessment from residents' perspective.

Study Overview

• Status: Recruiting
• Conditions: Airway; Recall; Perceived Applicability; Ganzouri Airway Scoring System; LEMON Score; Anesthesia Residents
• Intervention / Treatment: Other: Ganzouri Airway Scoring System; Other: LEMON Score

Detailed Description

Securing a patent airway stands as one of the most fundamental obligations in anesthetic practice, and the timely recognition of a potentially difficult airway prior to induction is of paramount importance for patient safety.

Two of the most widely recognized examples are the Ganzouri Airway Scoring system and the LEMON score. The Ganzouri Airway scoring system integrates seven distinct clinical parameters; mouth opening, thyromental distance, Mallampati classification, neck range of motion, ability to prognath, body weight, and history of prior difficult intubation, each carrying a weighted numerical value whose sum reflects the probability of encountering a difficult airway.

• Study Type: Observational
• Enrollment (Estimated): 44

Contacts and Locations

• Study Contact: Name: Ghada A Sherif, MD; Phone Number: 00201006153615; Email: drghadasherif@gmail.com

Study Locations

• Egypt
  • Cairo, Egypt, 12613
    • Recruiting
    • Cairo University
    • Contact: Ghada A Sherif, MD; Phone Number: 00201006153615; Email: drghadasherif@gmail.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 25 years to 28 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

This study was designed as a prospective observational educational study that compared the recall and perceived clinical applicability of two airway assessment scoring systems: the Ganzouri Airway Score and the LEMON Score

Description

Inclusion Criteria:

• Enrolled anesthesiology residents.
• Currently training at Kasr Al-Ainy Hospitals.
• Willing to participate and provide informed consent.
• Available for entire study duration (baseline through 2-week followup).
• First-year residents who didn't receive training in Ganzouri or LEMON Airway scoring systems.

Exclusion Criteria:

• Residents with prior formal training in either Ganzouri or LEMON Airway scoring systems (defined as structured lecture or workshop exceeding 30 minutes).
• Residents who will be on leave, rotation at external sites, or otherwise unavailable during the 2-week follow-up period.
• Refusal to participate or provide consent.

Study Plan

How is the study designed?

Design Details

• Observational Models: COHORT
• Time Perspectives: PROSPECTIVE

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort

Intervention / Treatment

Study group; First-year residents who didn't receive training in Ganzouri or LEMON Airway scoring systems.

Other: Ganzouri Airway Scoring System; This scoring system evaluates seven parameters: Mouth opening (interincisor distance); Thyromental distance; Mallampati classification; Neck movement; Ability to prognath (mandibular protrusion); Body weight; History of difficult intubation Each parameter was scored, score interpretation from 1- 4 with increasing difficulty , ≥4 suggesting awake intubation.; Other: LEMON Score; The LEMON mnemonic represents: Look externally (facial trauma, large incisors, beard, etc.); Evaluate 3-3-2 rule (mouth opening, hyomental distance, thyroidtomouth distance); Mallampati score; Obstruction (presence of airway obstruction); Neck mobility

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Mean total immediate recall score	The total immediate recall score was assessed using a structured recall checklist within 30 minutes after completion of the educational lectures.	Within 30 minutes after completion of the educational lectures

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Mean total delayed recall score at Day 14	The total delayed recall score will be assessed using the same structured recall checklist 14 days after completion of the educational lectures.	14 days after completion of the educational lectures
Resident satisfaction	Residents' satisfaction was assessed using a structured post-lecture questionnaire with five-point Likert-scale responses.	14 days after completion of the educational lectures

Collaborators and Investigators

• Sponsor: Cairo University

Study record dates

Study Major Dates

• Study Start (Actual): September 1, 2026
• Primary Completion (Estimated): December 1, 2026
• Study Completion (Estimated): December 1, 2026

Study Registration Dates

• First Submitted: September 20, 2026
• First Submitted That Met QC Criteria: September 20, 2026
• First Posted (Actual): September 25, 2026

Study Record Updates

• Last Update Posted (Actual): September 25, 2026
• Last Update Submitted That Met QC Criteria: September 20, 2026
• Last Verified: September 1, 2026

More Information

Terms related to this study

• Other Study ID Numbers: MS-225-2026 (1-7-2026)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES

IPD Plan Description

The data will be available upon a reasonable request from the corresponding author after the end of study for one year.

IPD Sharing Time Frame

After the end of study for one year.

IPD Sharing Access Criteria

The data will be available upon a reasonable request from the corresponding author.

• IPD Sharing Supporting Information Type: STUDY_PROTOCOL

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No