Effect of Different Head Positions During Endotracheal Intubation on Postoperative Sore Throat

Study Overview
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Brief Summary
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The goal of this [ randomized clinical trial] is to [effect of different head positions on the incidence of postoperative sore throat ] in [patients with endotracheal intubation ]. The main question it aims to answer is: the rate of postoperative sore throat will be reduced or not with the patients' head position changed during intubation.

Detailed Description
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Objective: To investigate the effect of tracheal intubation in different head positions on the incidence of pharyngeal pain 1, 6 and 24h after operation;Effect of tracheal intubation in different head positions on the incidence of hoarseness 1, 6 and 24h after operation

Official Title
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Effect of Different Head Positions During General Anesthesia Endotracheal Intubation on Postoperative Sore Throat

Conditions
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Endotracheal Intubation, General Anesthesia

Intervention / Treatment
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* Other: the head in the mandibular adduction position


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients undergoing endotracheal intubation abdominal or lower extremity surgery under general anesthesia, age 18 65 years old, gender is not limited, ASA grade I or II Exclusion Criteria: Patients with sore throat, hoarseness, cervical spondylosis, history of tracheostomy, upper respiratory tract infection, Mallampati score≥3, patients who have participated in other clinical trials within 3 months prior to enrollment, and patients who are participating in other clinical trials.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| No Intervention: Control group<br>The control group used the conventional method of endotracheal intubation, the operation method was the same as that of the T group, after the anterior part of the tracheal tube was inserted into the glottis, the head was still kept in the backward position, and the tube core was pulled out by another anesthesiologist (the core extubation force was less than 10N), and the endotracheal tube was inserted at the same time. | |
| Experimental: Research group<br>The operation methods of the research group are: left hand laryngoscope, inserted into the laryngeal cavity, fully exposed glottis, right hand tracheal tube from the right corner of the mouth into the mouth, direct vision to insert the anterior part of the endotracheal tube into the glottis, and then the assistant pulls out the tube core (the strength of the extubation core is less than 10N), so that the patient's jaw is adducted, the head remains in the mandibular adduction position, and the endotracheal tube is inserted at the same time | Other: the head in the mandibular adduction position<br>* Intubation was performed with the head in the mandibular adduction position<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| sore throat | Postoperative sore throat is defined as: persistent sore throat with the following grades: 1 point: no sore throat; 2 points: mild, accompanied by odynophagia; 3 points: moderate pain, persistent, worsening with swallowing; 4 points: severe, pain interferes with eating, requires the use of pain medication | 1, 6, 24 hours after tracheal catheter removal | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| hoarseness | Hoarseness is defined as a sound quality different from the preoperative voice and is graded as follows: 1 point: none, no hoarseness; 2 points: slight hoarseness, noticed by the patient; 3 points: moderate hoarseness, pronounced to observer; 4 points: severe hoarseness, loss of voice. | 1, 6, 24 hours after tracheal catheter removal |