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

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT06515808

Enrollment

10382

Registered

2024-07-23

Start date

2018-01-01

Completion date

2022-12-31

Last updated

2024-07-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Sore-throat

Keywords

Glidescope, Macintosh Blade, Airway Scope, Postoperative sore throat, General Anesthesia

Brief summary

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).

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.

Interventions

DEVICEDirect Laryngoscope

Patient receiving tracheal intubation with direct laryngoscope, GlideScope or Airway Scope

Study design

Observational model

COHORT

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

20 Years to No maximum

Healthy volunteers

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.

Design outcomes

Primary

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

Countries

Taiwan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 6, 2026