An Endotracheal Tube Inserted to the Level of the Hypopharynx

Overview

The goal of this observational study is to assess the incidence of successful ventilation using an ETT inserted orally above the vocal cords in pediatric patients undergoing surgeries. The main question it aims to answer are: Is the use of an endotracheal tube (ETT), positioned in the hypopharynx with its tip placed just above the vocal cords an easy, safe and effective way for the ventilation of pediatric patients who are undergoing surgery under general anesthesia via orotracheal intubation? The procedures to be performed in this study are standard of care. They are also used by pediatric anesthesiologists in the oral intubation of pediatric patients suffering from tumor or abscess.

Background: Tracheal intubation can be challenging in the pediatric age group. The difficult airway algorithm is followed starting with ventilation via a facemask. In cases of difficulties in intubation and ventilation, and especially in neonates and small infants, oxygen desaturation can happen very quickly and can be life threatening. The endotracheal tube (ETT), which is readily available and bypasses the tongue of the patient, can provide a safe and efficient ventilation. Specific Aim (s): In our study, we aim at assessing the incidence of successful ventilation using an ETT inserted orally above the vocal cords in pediatric patients undergoing surgeries. Secondary objectives include comparing the rate of successful ventilation between attending anesthesiologist and residents, assessing the incidence of success at first attempt, incidence of severe hypoxemia (SPO2 less than 85%), and incidence of adverse events such as bradycardia, stomach insufflation, laryngospasm, and desaturation. Methods: This prospective observational study will include infants and children under 6 years of age who undergo surgeries at the American University of Beirut Medical Center (AUBMC). The tube will be inserted orally above the vocal cords following which ventilation will be attempted. The exclusion criteria include pediatric patients with an existing endotracheal tube, a BMI \> 30 kg/m2, a risk of aspiration or a history of gastroesophageal reflux disease (GERD), and those undergoing emergency surgeries or whose legal guardian/representative is unwilling/unable to provide an written consent. The primary outcome is to assess successful ventilation (chest rise, end tidal CO2 wave and SpO2 levels). Significance: This ETT technique is simple to implement and use, requiring no special training or equipment. This technique can save time by ensuring patients' oxygenation and ventilation.