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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT05366582
Other study ID # Ismail02
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date May 10, 2022
Est. completion date November 1, 2022

Study information

Verified date March 2023
Source Bezmialem Vakif University
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Laryngeal nerve monitoring is performed to prevent intraoperative nerve damage in thyroidectomy operations. NIM-EMG intubation tube is used while monitoring the recurrent laryngeal nerve. Care should be taken when placing this tube. Ensure that the electrodes on the tube are in contact with the vocal cords. Both the macintosh laryngoscope and the videolaryngoscope can be used when inserting the NIM-EMG tube. The aim of our study is to compare these two intubation methods.


Description:

Anesthesiologists play a key role for the medications used for anesthesia and placement of the endotracheal tube in operations with intraoperative monitoring. While placing the NIM-EMG tube, the size of the endotracheal tube is very important so that the tube can contact the vocal cords. The placement of the tube may change due to reasons such as movement of the neck during the operation. In addition, endotracheal tube placement may be problematic due to poor vision during direct laryngoscopy. Incorrect placement of the tube may result in equipment inoperability and increase the likelihood of injury to the recurrent laryngeal nerve. Laryngoscopy is a term for tracheal intubation that provides visualization and evaluation of the larynx with its upper airway structures. Until recently, direct laryngoscopy was considered the standard technique for endotracheal intubation. Recently, a wide variety of methods have been developed for endotracheal intubation. Video laryngoscopes are similar to direct laryngoscopes but provide laryngeal imaging with a small video chip on their blade. This imaging is superior compared to direct laryngoscopy. The aim of the study was to compare the use of direct laryngoscopy and video laryngoscopy in intubation with the NIM-EMG tube, which is routinely used in operations where the recurrent laryngeal nerve (RLN) may be damaged, in terms of intubation success, intubation time, tracheal intubation comfort, hemodynamic responses, surgical satisfaction, and complications that may develop after anesthesia or surgery.


Recruitment information / eligibility

Status Completed
Enrollment 60
Est. completion date November 1, 2022
Est. primary completion date September 15, 2022
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 65 Years
Eligibility Inclusion Criteria: - The American Society of Anesthesiologists (ASA) physical status classification system 1-2 - Age 18-65 - Undergoing Elective Thyroid and Parathyroidectomy surgery - undergoing Intraoperative Recurrent Laryngeal Nerve Monitoring Exclusion Criteria: - History of head and neck surgery - Body mass index less than 19 or greater than 30 - Muscle relaxant allergy - Lidocaine allergy - IDS score >5 - Uncontrolled hypertension, bronchial asthma, tracheal pathology - undergoing emergency surgery - Cases that cannot give informed consent

Study Design


Related Conditions & MeSH terms


Intervention

Device:
Macintosh Laryngoscope
After the induction, laryngoscopy will be performed with a Macintosh laryngoscope after 2 minutes of manual ventilation after muscle relaxant by an anesthesiologist with at least 4 years of experience. Patients will be intubated with the "Medtronic Xomed Nerve Integrity Monitor Standard Reinforced ElectromyographyEndotracheal Tube" (size 6.0, 7.0 or 8.0). The cuff of the intubation tube will be connected to a manometer and inflated at a pressure of 20-30 mmHg until there is no air leak. Intubation will be confirmed by the appearance of end-tidal carbon dioxide (CO2). Failed intubation will be considered if not achieved within 2 minutes
Video Laryngoscope
After the induction, laryngoscopy will be performed with a Video laryngoscope after 2 minutes of manual ventilation after muscle relaxant by an anesthesiologist with at least 4 years of experience. Patients will be intubated with the "Medtronic Xomed Nerve Integrity Monitor Standard Reinforced ElectromyographyEndotracheal Tube" (size 6.0, 7.0 or 8.0). The cuff of the intubation tube will be connected to a manometer and inflated at a pressure of 20-30 mmHg until there is no air leak. Intubation will be confirmed by the appearance of end-tidal CO2. Failed intubation will be considered if not achieved within 2 minutes

Locations

Country Name City State
Turkey Bezmialem Vakif University Istanbul

Sponsors (1)

Lead Sponsor Collaborator
Bezmialem Vakif University

Country where clinical trial is conducted

Turkey, 

Outcome

Type Measure Description Time frame Safety issue
Primary Number of intubation attempts The number of intubation attempts between both groups will be recorded. that patients are intubated will be confirmed by the presence of end tidal carbon dioxide. during intubation after induction of anesthesia
Primary Difficulty of Laryngoscopy The Helbo-Hansen scoring system-Steyn Modification will be used to determine the quality of laryngoscopy.
Helbo-Hensen et al. with Steyn modification includes five criteria; ease of laryngoscopy, degree of coughing, position of vocal cords, jaw relaxation, and limb movement and graded on a 4-point scale.Total score of 5 will considere to be excellent, 6-10 good, 11-15 poor, and 16-20 bad. Total scores will divide into clinically acceptable and not acceptable scores (total score = 10 acceptable, >10 unacceptable).
during intubation after induction of anesthesia
Primary Difficulty of Intubation The intubation difficulty scale (IDS) of patients will be used to determine the difficulty of intubation during laryngoscopy, and the Helbo-Hansen scoring system-Steyn Modification will be used to determine the quality of laryngoscopy.
Intubation Difficulty Scale (IDS) score, which is a function of seven parameters, resulting in a progressive, quantitative determination of intubation complexity.
intubation difficulty may be defined as a measure of the degree of divergence from a predefined "ideal" intubation, i.e., one performed without effort, on the first attempt, practiced by one operator, using one technique, with full visualization of the laryngeal aperture and vocal cords abducted. Such an intubation is accorded an IDS value of 0. Each variation from this defined "ideal" intubation increases the degree of difficulty, the overall score being the sum of all variations from this definition. Impossible intubation is defined by infinity (IDS =[infinity]).
during intubation after induction of anesthesia
Primary NIM-EMG tube placement success After placing the special tube and checking its level and contact, the grounding subdermal needle electrodes will be placed on the shoulder and all of the electrodes will be connected to the main unit. The impedance of the electrodes will be measured and the tube will be fixed after the device confirms that the impedance values are below 4 kiloohm (kO). during intubation after induction of anesthesia
Primary Intubation time After anesthesia induction and muscle relaxant, the time will be started when patients who are manually ventilated for 2 minutes are ready for intubation. When successful intubation is proven, the time will be stopped and the duration recorded. during intubation after induction of anesthesia
Secondary sore throat Sore throat of the patients was evaluated as present or absent at the postoperative 30th minute, 2,6 and 24 hours by the patient. up to 24 hours postoperative period
Secondary dysphagia dysphagia of the patients was evaluated as present or absent at the postoperative 30th minute, 2,6 and 24 hours by the patient. up to 24 hours postoperative period
Secondary patient satisfaction It will be evaluated by the patient between zero and ten points according to the patient satisfaction scale and the severity of sore throat and hoarseness. The patient satisfaction score is scored over a minimum of 0 points and a maximum of 10 points. A score of 0 means I am not satisfied at all, a score of 10 means very satisfied. A higher score indicates higher satisfaction. up to 24 hours postoperative period
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