Effects of Three Airway Instruments on the Incidence of Postoperative Sore Throat

Effects of GlideScope, Pentax Airway Scope, and Macintosh Blade on the Incidence of Postoperative Sore Throat: A Cohort Study of 10,382 Patients

Postoperative sore throat (POST) is a common complaint after general anesthesia. POST is defined by the presence of a self-reported foreign body sensation or a painful sensation in the throat after general anesthesia. This condition may affect recovery and patient satisfaction and is associated with many factors, including intubation tools. Previous studies have reported conflicting results on POST. This retrospective cohort study, with sample size of 10,382 patients, was conducted to confirm the hypothesis that the use of video laryngoscopy (VL) is associated with a lower incidence of POST compared with direct laryngoscopy (DL).

Study Overview

• Status: Completed
• Conditions: Sore-throat
• Intervention / Treatment: Device: Direct Laryngoscope

Detailed Description

Background: Postoperative sore throat (POST) is a common complaint after general anesthesia. POST is defined by the presence of a self-reported foreign body sensation or a painful sensation in the throat after general anesthesia. This condition may affect recovery and patient satisfaction and is associated with many factors, including intubation tools. Previous studies have reported conflicting results on POST. This retrospective cohort study, with sample size of 10,382 patients, was conducted to confirm the hypothesis that the use of video laryngoscopy (VL) is associated with a lower incidence of POST compared with direct laryngoscopy (DL).

Methods: Data were extracted from a prospectively maintained quality improvement database. A total of 10,382 patients were included in the study. Statistical analysis was conducted for comparisons of demographic characteristics and to determine the effect of intubation tools on the incidence of POST.

• Study Type: Observational
• Enrollment (Actual): 10382

Contacts and Locations

Study Locations

• Taiwan
  • New Taipei City, Taiwan, 24300
    • Fu Jen Catholic University Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

Patients who underwent inpatient surgeries and general anesthesia with endotracheal tubes, intubated with direct laryngoscope, Pentax AirwayScope or GlideScope, during the period from January 1, 2018, to December 30, 2019, were included for the analysis.

Description

Inclusion Criteria:

• Patients receiving inpatients surgery and general anesthesia with tracheal intubation

Exclusion Criteria:

• Having difficult airway,

  • Anticipated difficult airway:

    1. Abnormal cervical spine movement or temporomandibular joint movement
    2. Airway-compromising masses such as tumors, cysts, or hematomas
    3. A Mallampati score greater than 3
    4. A thyromental distance of less than 6 cm
    5. A lesion below vocal cord
    6. A previously identified difficult airway

  • Unexpected difficult airway

    1. difficult mask ventilation
    2. difficult vocal cord visualization after multiple attempts of laryngoscopy
• Receiving laryngeal surgery, such as laryngeal biopsy, laryngeal microsurgery, laryngoplasty or vocal cord surgery,
• Not being extubated at the end of anesthesia,
• Being pregnant,
• Being under 20 years of age,
• American Society of Anesthesiologists (ASA) physical status class greater than 3.

Study Plan

How is the study designed?

Number of groups / cohorts

3

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Direct Laryngoscope Group; Patients receiving tracheal intubation with direct laryngoscope	Device: Direct Laryngoscope; Patient receiving tracheal intubation with direct laryngoscope, GlideScope or Airway Scope; Other Names: GlideScope AVL; AirwayScope S100
GlideScope Group; Patients receiving tracheal intubation with GlideScope
AirwayScope Group; Patients receiving tracheal intubation with AirwayScope

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Postoperative sore throat (POST)	POST is defined by the presence of a self-reported foreign body sensation or a painful sensation in the throat after general anesthesia.	12 to 24 hours after general anesthesia is finished

Collaborators and Investigators

• Sponsor: Fu Jen Catholic University Hospital
• Investigators: Principal Investigator: Chao Hsien Sung, MD, Fu Jen Catholic University Hospital, Fu Jen Catholic University

Study record dates

Study Major Dates

• Study Start (Actual): January 1, 2018
• Primary Completion (Actual): December 31, 2022
• Study Completion (Actual): December 31, 2022

Study Registration Dates

• First Submitted: July 14, 2024
• First Submitted That Met QC Criteria: July 17, 2024
• First Posted (Actual): July 23, 2024

Study Record Updates

• Last Update Posted (Actual): July 23, 2024
• Last Update Submitted That Met QC Criteria: July 17, 2024
• Last Verified: July 1, 2024

More Information

Terms related to this study

• Keywords: General Anesthesia; Postoperative sore throat; Glidescope; Macintosh Blade; Airway Scope
• Additional Relevant MeSH Terms: Infections; Respiratory Tract Infections; Respiratory Tract Diseases; Pharyngeal Diseases; Stomatognathic Diseases; Otorhinolaryngologic Diseases; Pharyngitis
• Other Study ID Numbers: FJUH111171

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO
• IPD Plan Description: The data that support the findings of this study are not openly available due to institutional privacy guidelines but may be available from the corresponding author upon written request identifying the requestor, and the purpose and proposed use of the shared data.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: Yes
• product manufactured in and exported from the U.S.: Yes