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OpenTrials
Completed

NCT Number: NCT05383417

No Post Intubation Laryngeal Symptoms

The purpose of the study is to test a novel endotracheal tube support device that reduces pressure of the tube on the voice box for prevention of post intubation laryngeal symptoms including sore throat, change in voice and trouble swallowing.

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Key information

Conditions

Sore-throat Anesthesia Complication Anesthesia Intubation Complication Anesthesia Morbidity Anesthesia; Adverse Effect Anesthesia; Reaction Deglutition Disorders Digestive System Diseases Dysphagia Dysphonia Esophageal Diseases Gastrointestinal Diseases Infections Intubation Complication Laryngeal Diseases Nervous System Diseases Neurologic Manifestations Otorhinolaryngologic Diseases Pathological Conditions, Signs and Symptoms Pharyngeal Diseases Pharyngitis Respiratory Tract Diseases Respiratory Tract Infections Signs and Symptoms Stomatognathic Diseases Throat Disorder Throat Injury Throat; Wound Voice Disorders Wounds and Injuries

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

UC San Diego Health

La Jolla, California, 92037-7895, United States

About this study

Single center randomized controlled trial with 100 subjects who will be intubated for already planned surgeries. The participants will be randomized into the control group or the clip group. The clip group will have a small clip (the endotracheal tube support device) placed on the endotracheal tube to reduce the pressure on the vocal cords and larynx. This endotracheal tube support device is made from a FDA approved biocompatible material.

The control group subjects will undergo their planned procedure with no intervention during intubation. The clip group will undergo their planned procedure as normal but with the endotracheal tube support device placed on the endotracheal tube by the assigned anesthesia attending physician. The clip is placed once the tube is secured and the ventilator circuit is connected. While extubating the patient, the endotracheal tube will be removed with the clip attached and a picture of the tube will be taken to record the clip location.

Before the planned procedure, the investigators will survey the participants to get a baseline for any pre-existing laryngeal symptoms. The same survey will be administered after the procedure when the participants are awake and alert just prior to discharge, 24 hours, 48 hours, and 1 week after the procedure. The survey will ask the participant to indicate "yes" or "no" for whether they are experiencing a sore throat, throat pain, oral pain, difficulty speaking, difficulty swallowing, changes in their voice, pain while speaking, and pain while swallowing. If they have indicated "yes" for any of the symptoms, the participants will also be asked to mark the severity on a visual analog scale from 1 to 10.

Other data points will also be collected in this study that are related to the intubation and participant's airway. The investigators will record the total time of the procedure and the length of time the clip is placed on the endotracheal tube. For each participant in the clip group, the investigators will also record the time it takes to place the clip on the endotracheal tube. Each participant's airway will be evaluated, and the investigators will record the thyromental distance, Mallampati score, history of difficult intubation, and the size of the endotracheal tube used. Lastly, data from each participant's intubation will be collected including number of attempts before successful intubation, incidence of dental injury, incidence of lip injury, laryngeal view on Cormack-Lehane scale, and any noted trauma upon extubation. Lastly, the investigators will have the anesthesiologists recruited for the study fill out a modified National Aeronautics and Space Administration (NASA) Task Load Index (TLX) form to evaluate the end-user experience for the device.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Patient undergoing general endotracheal anesthesia with an endotracheal tube
  • Patient is not undergoing a procedure in the head and neck region

Exclusion criteria

  • Patient with pre-existing severe sore throat, voice change, or trouble swallowing
  • Patient undergoing surgery in the head and neck region

Treatment and study plan

EndoClip

Device

Clip attached to mid portion of the endotracheal tube.

Other names: Endotracheal tube clip

Primary outcomes

  1. Sore Throat on a Scale From 0 (no Sore Throat) to 10 (Worst Possible Sore Throat)

    Time frame: Baseline to 1 week after intervention

    Subjects will indicate whether they are experiencing a sore throat or throat discomfort on a questionnaire. If they indicate 'yes' they will be asked to mark the severity of their symptoms on a scale ranging from 0 (no sore throat) to 10 (worst possible sore throat). Participants will be asked to report on their symptoms prior to intubation, after intubation on the day of discharge, 24 hours after intubation, 48 hours after intubation, and 1 week after intubation. Subjects that report baseline (prior to intubation) throat symptoms are excluded from the study.

  2. Change in Voice on a Scale From 0 (no Voice Change) to 10 (Most Severe Voice Change)

    Time frame: Baseline to 1 week after intervention

    Subjects will indicate whether they are experiencing a change in voice (i.e. deep and/or hoarse voice, worse than their usual voice quality) on a questionnaire. If they indicate 'yes' they will be asked to mark the severity of their symptoms on a scale ranging from 0 (no voice change) to 10 (most severe voice change). Participants will be asked to report on their symptoms prior to intubation, after intubation on the day of discharge, 24 hours after intubation, 48 hours after intubation, and 1 week after intubation. Subjects that report baseline (prior to intubation) throat symptoms are excluded from the study.

  3. Difficulty Swallowing on a Scale From 0 (no Difficulty Swallowing) to 10 (Complete Inability to Swallow)

    Time frame: Baseline to 1 week after intervention

    Subjects will indicate whether they are experiencing difficulty swallowing on a questionnaire. If they indicate 'yes' they will be asked to mark the severity of their symptoms on a scale ranging from 0 (no difficulty swallowing) to 10 (complete inability to swallow). Participants will be asked to report on their symptoms prior to intubation, after intubation on the day of discharge, 24 hours after intubation, 48 hours after intubation, and 1 week after intubation. Subjects that report baseline (prior to intubation) throat symptoms are excluded from the study.

  4. Pain in the Mouth on a Scale From 0 (no Mouth Pain) to 10 (Worst Possible Mouth Pain)

    Time frame: Baseline to 1 week after intervention

    Subjects will indicate whether they are experiencing mouth pain on a questionnaire. If they indicate 'yes' they will be asked to mark the severity of their symptoms on a scale ranging from 0 (no mouth pain) to 10 (worst possible mouth pain). Participants will be asked to report on their symptoms prior to intubation, after intubation on the day of discharge, 24 hours after intubation, 48 hours after intubation, and 1 week after intubation. Subjects that report baseline (prior to intubation) throat symptoms are excluded from the study.

  5. Difficulty Talking on a Scale From 0 (no Difficulty Talking) to 10 (Complete Inability to Talk)

    Time frame: Baseline to 1 week after intervention

    Subjects will indicate whether they are experiencing difficulty talking on a questionnaire. If they indicate 'yes' they will be asked to mark the severity of their symptoms on a scale ranging from 0 (no difficulty talking) to 10 (complete inability to talk). Participants will be asked to report on their symptoms prior to intubation, after intubation on the day of discharge, 24 hours after intubation, 48 hours after intubation, and 1 week after intubation. Subjects that report baseline (prior to intubation) throat symptoms are excluded from the study.

  6. Pain in the Neck/Chest on a Scale From 0 (no Neck/Chest Pain) to 10 (Worst Possible Neck/Chest Pain)

    Time frame: Baseline to 1 week after intervention

    Subjects will indicate whether they are experiencing pain in the anterior or low region of the neck and/or chest on a questionnaire. If they indicate 'yes' they will be asked to mark the severity of their symptoms on a scale ranging from 0 (no neck/chest pain) to 10 (worst possible neck/chest pain). Participants will be asked to report on their symptoms prior to intubation, after intubation on the day of discharge, 24 hours after intubation, 48 hours after intubation, and 1 week after intubation. Subjects that report baseline (prior to intubation) throat symptoms are excluded from the study.

  7. Patients With Post Operative Mouth Pain

    Time frame: 7 days

    Patients with post operative mouth pain during the first post operative 7 days. Each subject was to complete a survey at each of 4 time points (total 4 x 100 = 400 possible total surveys, 200 per group). All patients completed at least one survey during the study. Not all subjects completed the surveys at each time point. Therefore the number of units analyzed is less than 200 for each group below.

  8. Patients With Post Operative Sore Throat

    Time frame: 7 days

    Patients with post operative sore throat during the first post operative 7 days. Each subject was to complete a survey at each of 4 time points (total 4 x 100 = 400 possible total surveys, 200 per group). All patients completed at least one survey during the study. Not all subjects completed the surveys at each time point. Therefore the number of units analyzed is less than 200 for each group below.

  9. Patients With Post Operative Neck/Chest Pain

    Time frame: 7 days

    Patients with post operative neck/chest pain during the first post operative 7 days. Each subject was to complete a survey at each of 4 time points (total 4 x 100 = 400 possible total surveys, 200 per group). All patients completed at least one survey during the study. Not all subjects completed the surveys at each time point. Therefore the number of units analyzed is less than 200 for each group below.

  10. Patients With Post Operative Voice Change

    Time frame: 7 days

    Patients with post operative voice change over the post operative 7 days. Each subject was to complete a survey at each of 4 time points (total 4 x 100 = 400 possible total surveys, 200 per group). All patients completed at least one survey during the study. Not all subjects completed the surveys at each time point. Therefore the number of units analyzed is less than 200 for each group below.

  11. Patients With Post Operative Difficulty Talking

    Time frame: 7 days

    Patients with post operative difficulty talking over the post operative 7 days. Each subject was to complete a survey at each of 4 time points (total 4 x 100 = 400 possible total surveys, 200 per group). All patients completed at least one survey during the study. Not all subjects completed the surveys at each time point. Therefore the number of units analyzed is less than 200 for each group below.

  12. Patients With Post Operative Difficulty Swallowing

    Time frame: 7 days

    Patients with post operative difficulty swallowing over there first post operative 7 days. Each subject was to complete a survey at each of 4 time points (total 4 x 100 = 400 possible total surveys, 200 per group). All patients completed at least one survey during the study. Not all subjects completed the surveys at each time point. Therefore the number of units analyzed is less than 200 for each group below.

Sponsors and collaborators

Lead sponsor

University of California, San Diego

Other

Registry information

Official study title

Endotracheal Tube Clip for Prevention of Post Intubation Laryngeal Symptoms

Acronym: No-PILS

Important dates

Study start
2022
Primary completion
2023
Study completion
2023
First posted
May 20, 2022
Registry last updated
Sep 10, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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