SICU stands for Surgical ICU, or Surgical Intensive Care Unit. It usually keeps some very heavy patients under observation. For example, patients with splenic rupture, abdominal hemorrhage or liver rupture, due to the unstable vital signs of the patient, there may be accelerated heart rate and decreased blood pressure. If the bleeding is more than that and the amount of bleeding is very large, emergency surgery is also needed to rescue the patient. In addition, after some major surgery patients also need to go to the sicu for treatment. For example, after pancreaticoduodenectomy, partial hepatectomy or radical gastric cancer surgery, it is routine to stay in the intensive care unit for 1-2 days, and then transfer back to the general ward for treatment when the patient’s vital signs are stable and hemodynamics are stable.