This study aims to determine whether hyperangulated blades have a higher intubation success rate than Macintosh blades in patients undergoing general anesthesia, and to identify patient subgroups in which hyperangulated blades are particularly advantageous for tracheal intubation.
Adult patients aged ≥ 19 years undergoing surgery under general anesthesia.
Patients who did not provide informed consent
Patients with severely loose or unstable teeth
Patients with cervical spine disease
Patients with American Society of Anesthesiologists (ASA) physical status class IV or higher