Study of Neck Measurements to Predict Airway Access and Laryngoscope Blade Size in Adults Undergoing Elective Surgery

What this Trial Is About

This observational study focuses on adults aged 18 to 65 undergoing elective surgery to evaluate and compare two neck measurements thyromental distance TMD and mandibular triangle perpendicular length MTPL. Researchers aim to determine which measurement better correlates with the incisor vallecula distance IVD, a key factor in predicting the ease of direct laryngoscopy and appropriate laryngoscope blade size. The study is designed to improve preoperative airway assessment by understanding these correlations. Participants will undergo preoperative evaluation where their TMD, MTPL, and IVD are measured. These measurements will be analyzed to create a multiple regression equation to predict IVD from external neck dimensions. This prediction can then help select the correct size of the Macintosh laryngoscope blade during intubation. The study also examines the relationship between these measurements and the Cormack and Lehane score during intubation. During the study, participants will be assessed from the time they enter the preoperative area until they are shifted to the operating room. Measurements related to airway dimensions and blade size will be taken during induction of anesthesia and intubation. Researchers will collect data on airway access and intubation difficulty while participants undergo their planned surgery. Participation involves no intervention beyond standard care, and the total observation time is brief, focusing on the preoperative and intubation periods.

Correlation of Neck Dimensions of Airway Evaluation