Any surgery carries small risks. Risks of endoscopic sinus surgery include:


o It is normal to have bleeding from your nose after sinus surgery. In most cases, the nosebleeds will slowly decrease over first few days after surgery.They can be stopped by pinching your nostrils for 10-15 minutes.

o In rare cases, you may have a more significant nosebleed (less than <5% of patients) that does not stop for many hours, despite pressure on your nose. If that happens, you may need to come back to the hospital to have nasal packing to help stop the bleeding. In very rare cases, you may need to go back to the operating room if the bleeding cannot be stopped by the nasal packing.

o To diminish the risk of this complication, avoid heavy lifting or straining in the first couple of weeks following surgery to avoid popping of a small blood vessels inside your nose.

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Infection :

o Any surgery carries a small risk of infection.

If you experience purulent, green or yellow discharge from your nose and fever, you may need antibiotics to treat the infection.

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Injury to the eye:

o Because your sinuses lie close to your eyes, there is a very small risk of injury to the eye (Less than 0.1%). Your surgeon is always very careful during the surgery and will study your CT scan and the anatomy of the inside of your nose to avoid these injuries.

If you experience significant eye pain, swelling, or vision change after your surgery, call your surgeon’s office or go to the nearest emergency department.

CSF leak/Meningitis

o Because some of your sinuses lie close to the base of your skull, there is a very small risk of Cerebrospinal fluid leak (CSF leak) (Less than 0.1%).

o CSF is the fluid around your brain.

o If there is a breach of the thin bone that separates your sinus from this fluid, a small amount of fluid can leak out and drip out of your nose.

o This fluid can get infected and cause an infection of the lining of the brain called Meningitis, which can be treated with IV antibiotics.

o Signs of a CSF leak include significant dripping of clear and thin fluid out of your nose when bending down or straining.This should not be mistaken for the normal nasal discharge after surgery that is usually thicker, more pink or coloured and of smaller quantity.

o If you have a CSF leak, you will likely require an operation to patch the site of leakage.

o If you experience symptoms of CSF leak or meningitis including fever, confusion and severe unstoppable headache, call your surgeon’s office or go to the nearest emergency department.