What Is Glue Ear?
If you have noticed that your hearing has been a little muted lately, then you might be suffering from glue ear.
But what is glue ear, and how can it impact your hearing?
This condition can affect adults and children and is more common than you might think, especially in kids.
Let’s look at some glue ear symptoms and what to do if you or your child suffer from them.
Glue ear, also known as sticky ear or otitis media with effusion, is a build-up of fluid in the middle ear behind the eardrum. It is called “glue” or “sticky” because the fluid is thick and glue-like.
This sticky fluid prevents the eardrum from vibrating properly, which can cause hearing issues. This space behind the eardrum is ordinarily clear air, so having trapped fluid can cause the symptoms of glue ear.
It’s common in young children and can last weeks or months. It can affect hearing, speech, learning, and behaviour.
Glue ear is the most common cause of hearing impairment in childhood, and it usually follows an episode of ear infection, such as acute otitis media (AOM).
Anatomy of the Ear
To understand glue ear, it’s helpful to know a bit about ear anatomy:
Outer Ear: Consists of the pinna (the visible part of the ear) and the ear canal.
Middle Ear: Contains the eardrum and three tiny bones called ossicles (malleus, incus, and stapes) that transmit sound vibrations to the inner ear.
Inner Ear: Contains the cochlea and vestibular system, which is responsible for hearing and balance.
Eustachian Tube: A narrow tube connecting the middle ear to the back of the throat. It helps equalize air pressure and drains fluid from the middle ear.
Causes of Glue Ear
Glue ear occurs when the Eustachian tube becomes blocked or doesn’t function properly, preventing fluid from draining from the middle ear. Factors that can contribute to Eustachian tube dysfunction include:
Upper Respiratory Infections: Colds or sinus infections can cause inflammation and swelling, blocking the Eustachian tube.
Allergies: Allergic reactions can lead to inflammation and increased mucus production.
Enlarged Adenoids: Swollen adenoids can obstruct the opening of the Eustachian tube.
Exposure to Irritants: Smoke and pollutants can cause inflammation in the nasal passages and Eustachian tube.
Risk Factors
Several factors increase the likelihood of developing glue ear:
Age: Most common in children aged 1 to 6 years due to the horizontal position and smaller size of their Eustachian tubes.
Family History: Genetics can play a role in susceptibility.
Daycare Attendance: Increases exposure to infections from other children.
Bottle-Feeding: Especially when done lying down, breastfeeding may reduce the risk.
Exposure to Tobacco Smoke: Passive smoking can irritate the Eustachian tube.
Seasonal Factors: Higher incidence during winter when upper respiratory infections are more common.
Cleft Palate or Down Syndrome: Anatomical differences can affect Eustachian tube function.
Glue Ear Symptoms
The main symptom is often mild to moderate hearing loss. Glue ear may cause pain, but many children have no immediate symptoms. Therefore, getting your child’s ears checked at least once per year between the ages of 6 months and 3 years is a good idea.
Here is what to look for if you suspect your child might be suffering from glue ear.
- Glue ear and hearing loss are connected, so you might notice hearing issues.
- Your child is talking louder than usual.
- Your child has trouble hearing others speaking at an average volume.
- There might be a ringing or buzzing sound in the ear.
- Pressure or discomfort in the ear.
- Change of behaviour in your child (you might think they are ignoring you).
- Your child is becoming increasingly frustrated.
- Your child is having issues with speech or language.
- They’re tired more than usual.
- They have balance issues or are more clumsy than usual.
- Your child has trouble falling asleep or has disrupted sleep.
What to Look Out for as a Parent or Carer
Some children can experience developmental, psychological and behavioural effects due to the impaired hearing caused by glue ear.
Children may have learning difficulties if they cannot hear their teacher or classmates properly. They may also become frustrated, quiet and withdrawn because they have trouble following what is happening around them.
If a child becomes less responsive when spoken to and doesn’t have direct eye contact with a parent or teacher, this is possibly a sign of glue ear. Smaller children and babies may also become less responsive to sounds.
Diagnosis and Tests
If glue ear is suspected, a healthcare professional may perform the following:
Otoscopy: Using an otoscope to look inside the ear for fluid behind the eardrum.
Tympanometry: Measures the eardrum’s movement in response to changes in air pressure, indicating fluid presence.
Audiometry: Hearing tests to assess the degree of hearing loss.
Acoustic Reflectometry: Measures sound reflection from the eardrum to detect fluid.
Observation: Monitoring the condition over time to see if it resolves independently.
Glue Ear Treatment
Treatment depends on the severity of symptoms, duration, and impact on quality of life.
Watchful Waiting
Description: Many cases resolve on their own within 3 months.
Recommendation: Regular monitoring without immediate intervention.
Suitable For: Children and adults with mild symptoms and no significant hearing or developmental issues.
Autoinflation
Description: A non-invasive technique to open the Eustachian tube.
Method: Blowing up a special balloon (Otovent) through one nostril while keeping the other nostril and mouth closed.
Benefit: Can help drain fluid and improve symptoms.
Limitations: Requires cooperation, so may not be suitable for young children.
Medications
Antihistamines and Decongestants: Generally not effective for glue ear and not routinely recommended.
Antibiotics: Not typically useful unless there is an active infection.
Steroids: Oral steroids are sometimes used but have limited evidence and potential side effects.
Surgical Interventions
Grommets (Ventilation Tubes)
Procedure: Insertion of tiny tubes into the eardrum under general anesthesia.
Purpose: Allows air to enter the middle ear and fluid to drain.
Duration: Tubes usually fall out naturally within 6-12 months.
Benefits: Immediate improvement in hearing.
Risks: Small risk of infection or scarring.
Adenoidectomy
Procedure: Surgical removal of the adenoids.
Indication: Enlarged adenoids contributing to Eustachian tube blockage.
Combination: Often performed with grommet insertion.
Benefits: Reduces the recurrence of glue ear.
Hearing Aids
Description: Amplify sound to compensate for hearing loss.
Indication: For those who cannot undergo surgery or prefer a non-surgical option.
Usage: This may be temporary until the glue ear resolves.
Preventing Glue Ear
If you are wondering how to prevent glue ear, then there are some things you can do to lessen the chances. Although it is difficult to avoid, especially in young children, you can help prevent chronic glue ear by staying as healthy as possible.
Prevention includes supporting your and your child’s immune system through healthy lifestyle choices and limiting exposure to smoke and other similar inhaled irritants.
While glue ear cannot always be prevented, certain measures may reduce the risk:
Breastfeeding: Offers antibodies and reduces infections.
Avoiding Exposure to Smoke: Keep the environment smoke-free.
Reducing Infection Risks: Practice good hygiene and limit exposure to sick individuals.
Allergy Management: Control allergic reactions that may contribute to Eustachian tube dysfunction.
Immunisations: Stay up-to-date with vaccinations like the pneumococcal and flu vaccines.
Conclusion
Glue ear is a common condition impacting hearing and overall development, particularly in young children. Understanding the signs, causes, and treatment options is essential for managing the condition effectively.
While many cases resolve without intervention, persistent symptoms require medical attention to prevent complications. By staying informed and proactive, parents and individuals can ensure better ear health and minimise the impact of glue ear on daily life.
