Pelvic tumor resection is indicated in cases of large tumors in the uterus, ovaries... During surgery, anesthesia with endotracheal anesthesia is often used to help control breathing during and after surgery.

Although general anesthesia is considered safe, it can still weaken the respiratory system, leading to serious complications. Lung-related complications are common complications after general anesthesia. Therefore, protecting the lungs during anesthesia plays a very important role, to ensure patient safety, as well as help the surgery to be successful.