Maxillary Antral Sinus Washout

Overview

A maxillary antral sinus washout (also called antral lavage or sinus puncture and irrigation) is a procedure to drain and flush out the maxillary sinus — the large air-filled cavity within each cheekbone. When this sinus becomes blocked and filled with infected mucus or pus that does not clear with medication, washing it out can relieve the infection and pressure and allow a sample to be taken to identify the responsible germ.

The procedure passes a fine needle or cannula into the sinus, usually through the side wall of the nose beneath the inferior turbinate, and flushes sterile fluid through to wash out trapped material. Although less common than in the past — endoscopic sinus surgery now handles many cases — antral washout remains a useful, relatively simple option in selected situations.

This page is an educational overview only. It is not medical advice, and no outcome can be guaranteed. A specialist decides whether a washout is appropriate for you.

Who May Need This

Antral washout may be considered for people with persistent maxillary sinus infection that has not cleared with antibiotics and other medical treatment, where imaging shows the sinus is full of retained fluid or pus. It is also used when a sample is needed to identify the germ and guide antibiotics, particularly if standard treatment is failing.

It may be helpful in certain acute infections that are not settling, or where fungal or unusual infection is suspected. Eligibility is determined by an ENT specialist after examining the nose and reviewing imaging, and it is one of several options for managing sinus disease.

When It May Be Recommended

A specialist may recommend a washout when a maxillary sinus infection persists despite adequate medical treatment, when imaging confirms retained infected material in the sinus, or when identifying the exact organism is important to direct therapy. It can provide relief and diagnostic information without the more extensive surgery of full endoscopic sinus surgery.

The decision weighs the likely benefit of draining and sampling the sinus against the minor discomfort and small risks of the procedure. In many cases, endoscopic sinus surgery or continued medical treatment may be preferred. The final recommendation depends on individual evaluation.

Diagnosis and Evaluation

Evaluation includes a history of sinus symptoms, previous infections and treatments, allergies, and dental problems (since maxillary sinusitis can arise from a tooth). The nose is examined, often with a nasal endoscope, and imaging such as a CT scan of the sinuses shows which sinuses are affected and how much fluid is retained.

Any samples taken during the washout are sent for laboratory testing to identify bacteria or fungi and guide treatment. General health, bleeding tendency, and medications are reviewed beforehand, and a second opinion may be valuable if infections keep recurring.

Treatment Options

Sinus infection is usually treated first with medical measures — antibiotics when bacterial, steroid nasal sprays, saline rinses, decongestants, and treatment of any underlying allergy or dental source.

When drainage or sampling is needed, options include antral washout (a targeted flush of the maxillary sinus) or functional endoscopic sinus surgery (FESS), which opens the natural sinus drainage pathways more completely and is often preferred for chronic disease. The choice depends on the pattern and cause of the sinus problem.

How It Is Performed

Antral washout can be done under local anaesthesia (with the inside of the nose numbed), sometimes with sedation, or under general anaesthesia, particularly in children. A fine trocar or cannula is passed through the thin bone of the lateral nasal wall into the maxillary sinus, usually beneath the inferior turbinate.

Sterile saline is then flushed through the sinus, washing out pus and infected mucus, which drains out through the natural opening into the nose. A sample of the material may be collected for testing. The procedure itself takes only a few minutes per side, and most people go home the same day.

Preparation

Preparation depends on the anaesthesia used. For a local procedure, little is needed beyond reviewing medications, including blood thinners. If general anaesthesia or sedation is planned, fasting instructions must be followed and pre-anaesthetic checks completed.

Tell your specialist about nosebleeds or bleeding tendencies. Arrange for someone to accompany you if sedation is used. If travelling abroad, bring copies of your imaging and records, and plan for culture results to reach your home doctor.

Benefits and Expected Goals

The goals of an antral washout are to drain infected material from the maxillary sinus, relieve pressure and infection, and obtain a sample to guide antibiotic treatment. Many appropriately selected patients feel relief of facial pressure and improvement of a stubborn infection after the sinus is cleared.

Benefits vary by individual and by the underlying cause. A washout treats the current build-up but does not correct any long-term drainage problem, so infections can recur if the underlying issue is not addressed. Your specialist can discuss realistic goals for your situation.

Risks and Possible Complications

Antral washout is generally safe and minor, but it does carry some risks.

• Discomfort, pressure, or temporary tenderness in the cheek
• Bleeding from the nose
• Infection or failure to fully clear the sinus, sometimes needing repeat treatment
• Rarely, the cannula entering nearby tissue such as the cheek soft tissues or eye socket area
• Rarely, air being forced into surrounding tissues
• Risks related to anaesthesia if general anaesthetic is used

Your specialist will explain the risks that apply to you and how any problem would be handled. Report severe pain, swelling around the eye, or vision changes urgently.

Recovery, Follow-up & Aftercare

Recovery is usually quick. Most people return to normal activities within a day or two. Mild cheek tenderness, a blocked-nose feeling, and small amounts of blood-tinged discharge are common for a short time. Saline rinses and any prescribed antibiotics help clear the infection.

Follow your specialist's aftercare advice, complete any medication, and attend follow-up to review culture results and check that the infection has settled. If you have travelled abroad, ensure test results reach your home doctor and arrange any further treatment before returning.

Medical Tourism Planning

If you are considering a sinus washout abroad, choose a JCI- or ISO-accredited hospital with an established ENT service and access to imaging and laboratory testing. Confirm the specialist's experience and request a written plan and cost estimate before travelling.

Because culture results may take a few days, plan how they and any treatment recommendations will be shared with your doctor at home, and arrange follow-up for recurrent or chronic sinus problems. Consider medical travel insurance.

Estimated Cost Factors

The cost of an antral washout depends on the country and hospital, the type of anaesthesia used, whether it is combined with endoscopy or other sinus procedures, laboratory charges for samples, and any imaging. General anaesthesia adds to the cost.

Many international destinations offer these procedures at a fraction of typical prices in higher-cost countries, but figures vary by case. Online prices are only estimates — always request a personalized written quote for your specific situation before deciding.

Choosing a Hospital or Specialist

Look for a hospital with recognised accreditation and a dedicated ENT department with rhinology (nose and sinus) expertise. Confirm the specialist's qualifications and experience with sinus procedures, and access to CT imaging and microbiology.

Ask about international patient services, how culture results and follow-up are handled, and options if chronic sinus disease needs more definitive surgery. Transparent written cost and treatment plans are signs of a reliable programme.

Alternatives

Alternatives to antral washout include continued medical treatment (antibiotics guided by testing, steroid sprays, saline rinses, and allergy or dental management), and functional endoscopic sinus surgery (FESS) for chronic or recurrent disease, which opens the sinus drainage pathways more fully.

The best option depends on whether the problem is a one-off infection or a long-term drainage issue. Discuss the alternatives with your ENT specialist so the plan fits the cause and pattern of your sinus disease.

Questions to Ask Your Doctor

• Why is a washout the best option for me rather than medication or endoscopic surgery?
• Will you take a sample, and how will the results guide my treatment?
• What anaesthesia will be used, and what are the risks in my case?
• Could my sinus problem come back, and what would prevent that?
• How and when will I get any test results if I am travelling home?
• What aftercare and medication will I need?
• What is included in the written cost estimate?