Age based motoyama formula versus ultrasound guided subglottic diameter in predicting endotracheal tube size in pediatric population - A Prospective Comparative Study

This prospective comparative study, led by Dr. MG Rajasekar, aims to evaluate the effectiveness of age-based Motoyama formula versus ultrasound-guided subglottic diameter in predicting the correct endotracheal tube (ETT) size in the pediatric population. The primary objective involves identifying appropriate ETT size by the leak test, with secondary objectives including assessing airway pressure, intubation attempts, and postoperative complications.The study plans to enroll 70 pediatric patients.After the pre-anesthetic assessment, patients are randomized into two groups for intubation. Group B uses the Motoyama age-based formula for endotracheal tube (ETT) size calculation, while Group A employs high-resolution ultrasonography to assess subglottic diameter. Both groups undergo standard anesthesia induction and maintenance, with ETT leak tests performed to ensure correct sizing. Airway pressure is monitored, and neuromuscular blockade is managed. Post-surgery, complications such as cough, blood staining, and stridor incidence are observed.Total number of clinically fit and unfit will be calculated by the leak test and number of times ETT changed will be documented.Statistical analysis will employ IBM SPSS version 20.0, with significance set at p-value < 0.05. The study is scheduled from April 2024 to September 2025 at Apollo KH Hospital, Melvisharam.