Comparison of the Macintosh laryngoscope vs KingVision videolaryngoscope for routine tracheal intubation

This study compares two tools used by anaesthetists to insert a breathing tube (endotracheal tube) during surgery: the traditional Macintosh laryngoscope (a standard device with a curved blade) and the newer KingVision video laryngoscope (which uses a small camera to give a clear view of the airway on a screen). The study aims to find out which tool is faster and easier to use in female patients with normal airways having gynaecological, breast, or plastic surgery. You may be eligible if: - You are a female patient between 22 and 90 years old - You are having gynaecological, breast, or plastic reconstructive surgery - You have a normal airway (as assessed by the anaesthetist) - You are of Asian heritage You may NOT be eligible if: - You have a history of difficult intubation - You are morbidly obese (BMI above 40) - You have a hiatus hernia or symptomatic acid reflux - You are at high risk of regurgitation or aspiration during anaesthesia Talk to your doctor about whether this trial might be right for you.