Intubation Clinical Trial
Official title:
Ultrasound Versus Palpation to Find Optimal Endotracheal Tube Cuff Position in Pediatric Patients Receiving Head and Neck Surgery: Randomized Controlled Trial
A. The hypothesis of this study is "Airway ultrasound will be superior to the conventional methods of auscultation and palpation in confirming proper positioning of the endotracheal tube in children undergoing endotracheal intubation with an endotracheal tube with cuff". B. The purpose of this study is to determine the utility of airway ultrasound in confirming proper positioning of the endotracheal tube. C. In addition, we would like to suggest what criteria should be used when using airway ultrasound to determine the fixed position of an endotracheal tube.
1. Obtain consent from the guardian of the target patient before surgery and perform randomization. 2. After entering the operating room, attach equipment for electrocardiogram, non-invasive blood pressure, peripheral oxygen saturation, anesthesia depth monitoring, and neuromuscular blockade monitoring. 3. Prepare the endotracheal tube according to the patient's age. 6 months to 18 months: internal diameter 3.5 18 months to 2 years: internal diameter 3.5 or 4.0 2-4 years: internal diameter 4.0 4 to 5 years: internal diameter 4.5 5 years and older: Age/4 + 3.5 4. When sufficient neuromuscular blockade is achieved after infusion of neuromuscular blocking agents, after inserting the endotracheal tube, check the position of the endotracheal tube according to the assigned group, fix the endotracheal tube in consideration of changes in posture during surgery, and record its depth. Ultrasound group A. During tracheal intubation using a video laryngoscope, the endotracheal tube is stopped when the endotracheal tube cuff passes through the vocal cord. B. Use ultrasound to check the position of the endotracheal tube cuff, check its movement according to the surgical position, and position the cuff according to the size of the endotracheal tube as follows. - internal diameter 3.5, internal diameter 4.0: The cuff is positioned 0.5 cm below the lower margin of the cricoid cartilage. - internal diameter 4.5, internal diameter 5.0: The cuff is positioned 1 cm below the lower margin of the cricoid cartilage. C. In the final position, check for bilateral lung movement (lung sliding sign) using lung ultrasound. D. Record the depth of fixation of the endotracheal tube. Conventional Group A. During tracheal intubation with video laryngoscope, stop the endotracheal tube when the cuff of the endotracheal tube passes through the vocal cords, and confirm that the cuff of the endotracheal tube is palpable at the suprasternal notch. B. Adjust the position of the endotracheal tube to account for movement in the surgical position and confirm that the endotracheal tube cuff is palpable at the suprasternal notch in the final position for surgery. C. Confirm that bilateral lung sounds are audible through auscultation and secure the endotracheal tube. D. Record the depth of endotracheal tube placement. 5. After the end of surgery and before awakening the patient, check the position of the endotracheal tube cuff using ultrasound. Record how far the proximal margin of the endotracheal tube cuff is from the lower margin of the cricoid and how it relates to surrounding structures (1st tracheal ring, 2nd tracheal ring, 3rd tracheal ring, below the 3rd tracheal ring, above the cricoid level). Check the movement of both lungs (sliding sign) using lung ultrasound. ;
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