Functional endoscopic sinus surgery enlarges pathways to the sinuses. It is done using a special tube that can be passed through the nose.
Reasons for Procedure
The sinuses are hollow areas in the skull that are arranged in pairs. Mucus and other fluids drain from the sinuses through small pathways to the throat. Blockage of these pathways can cause fluids to build up in the sinuses. This can cause pain and infection.
This surgery is done to open the pathways for drainage. It may be done for people who have recurring sinus infections that have not responded to other treatments.
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Problems are rare, but all procedures have some risk. The doctor will go over some problems that could happen, such as:
- Excess bleeding
Problems from anesthesia, such as wheezing or sore throat
- Damage to the optic nerve
- Spinal fluid leakage
Narrowing of the
may raise the risk of problems.
What to Expect
Prior to Procedure
The surgical team may meet with you to talk about:
- Anesthesia options
Any allergies you may have
- Current medicines, herbs, and supplements that you take and whether you need to stop taking them before surgery
- Fasting before surgery, such as avoiding food or drink after midnight the night before
- Arranging for a ride to and from surgery
The doctor may give:
Description of the Procedure
A thin tube called an endoscope will be inserted into the nose. The scope allows the doctor to view the inside of the nose. Other tools are passed through the nose to remove abnormal tissues and open the sinus pathways. The nose may be packed with bandages and splints.
How Long Will It Take?
2 to 4 hours
Will It Hurt?
You may have discomfort and feel tired in the first week. Medicine and home care can help.
Will It Hurt?
You will have mild swelling and discomfort. Ask your doctor about pain medication.
Average Hospital Stay
Most people can go home the same day. If you have problems, you may need to stay longer.
At the Care Center
Right after the procedure, the staff may give you pain medicine.
It will take 2 to 3 weeks for breathing to return to normal. Some physical activities may be limited. You may need to delay your return to work.
Call Your Doctor
Call your doctor if any of these occurs:
- Signs of infection, such as fever and chills
- Redness, swelling, excessive bleeding, or discharge from the nose
- Pain that you cannot control with the medicine
- Nausea and vomiting
- A headache that lasts longer than two days after surgery
- Bruising around the eye(s)
- Swelling of the eye(s)
- Changes in vision
If you think you have an emergency, call for medical help right away.
Chronic rhinosinusitis. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/chronic-rhinosinusitis. Accessed August 4, 2021.
Functional endoscopic sinus surgery. UNC School of Medicine website. Available at: https://www.med.unc.edu/ent/patient-care/clinical-services/sinus-and-allergy-1__trashed/functional-endoscopic-sinus-surgery. Accessed August 4, 2021.
Functional endoscopic sinus surgery (FESS). The Children’s Hospital of Philadelphia website. Available at: https://www.chop.edu/treatments/functional-endoscopic-sinus-surgery-fess. Accessed August 4, 2021.
Last reviewed July 2021 by
EBSCO Medical Review Board
James Cornell, MD
Last Updated: 8/4/2021