Nasal intubation is a technique of inserting a catheter into the patient's trachea through the nose with the purpose of ventilating and aspirating phlegm in the respiratory tract. This is a simple and easy technique to perform but extremely important. In case the patient needs emergency care, this technique needs to be performed quickly and promptly.

Endotracheal anesthesia is a general anesthesia method with endotracheal intubation to help control breathing during head and neck abscess surgery and post-operative resuscitation. Accordingly, to limit complications, patients need to follow the doctor's instructions and orders.

Renal cysts are benign and usually have no obvious symptoms. Endotracheal anesthesia for laparoscopic renal cyst surgery helps control breathing during surgery and postoperative recovery.

Endotracheal anesthesia in hepatobiliary surgery is a modern technique applied to patients undergoing hepatobiliary surgery to control the patient's respiratory function during and after surgery.