First of all, we have to clarify what we mean by surgical complications. Surgical complications are damages caused by the surgery itself, such as accidental injury to surrounding organs, loss of certain functions, failure or unsatisfactory reconstruction of certain functions, infection in the surgical area, and so on. Common complications of endonasal surgery are usually found in the eye, intracranial and nasal cavities, although the incidence is not high, you should not take it lightly. Here we look at what are. 1, eye complications: ① periorbital bruising, this time to immediately notify the doctor to withdraw the nasal cavity stuffing, and orbital local cold compresses to reduce the blood to continue to ooze out, 24 hours after the change to hot compresses, so that the hematoma gradually absorbed and subsided. Serious periorbital complications may lead to diplopia, blurred vision, vision loss or even blindness, accompanied by conjunctival congestion and edema, swelling and protrusion of the eyeball. If the above situation occurs, please consult a doctor immediately. 2, intracranial complications: ① cerebrospinal fluid leakage is a relatively common intracranial complication, long-term cerebrospinal fluid leakage can easily lead to low cranial pressure headache and intracranial infections. Because the patient has a stuffing in the nasal cavity within 48 hours after the operation, most of the cerebrospinal fluid leakage cannot be detected in time. When the stuffing is withdrawn, if there is a clear watery fluid or bright blood flowing from the nasal cavity, and the flow increases when the head is lowered and exerted or when the jugular vein is compressed, then it suggests that there is a possibility of cerebrospinal fluid leakage, and it is necessary to inform the doctor immediately. ② Intracranial hemorrhage is a rare but serious complication, the patient may manifest as headache, limb numbness, convulsions, etc., if the symptoms should be promptly informed to the doctor. 3, nasal complications: ① serious bleeding in the nasal cavity: a certain amount of postoperative bleeding is normal, but serious bleeding is a complication, which can lead to anemia or even shock. Within 24 hours after surgery is the high incidence of bleeding. Severe bleeding is characterized by persistent dripping of fresh blood from the nostrils, repeated spitting of blood or blood clots from the mouth, or frequent swallowing. Inform your doctor promptly if you have any of these severe bleeding episodes. ② Nasal adhesions: Although nasal adhesions do not have serious consequences for the patient, the adhesions affect nasal ventilation and sinus drainage, thus causing recurrence of sinusitis after surgery, and the effect of surgery and treatment is greatly reduced. The reasons for the formation of nasal adhesions are complex, in addition to surgical skill factors, but also include the narrow nasal cavity of each patient, accompanied by septal deviation and inferior turbinate hypertrophy, postoperative mucosal edema, inflammatory granulation tissue proliferation; the patient did not adhere to the medication before and after the operation; did not adhere to the postoperative review and cleaning of the nasal cavity and so on. So how to reduce postoperative adhesions and recurrence? Please see the article “Sinusitis after surgery must – review + medication!!!!