Hearing loss in infants is a serious medical problem that can significantly impact a child’s development. The condition can range from mild to profound hearing loss and can be either congenital or acquired. Congenital hearing loss is usually due to genetic or perinatal factors, while acquired hearing loss can result from infections, injuries, or medications. According to the World Health Organization (WHO), early diagnosis and intervention are critical to minimizing the negative impact on children’s language and social development.
History of the disease and interesting historical facts
The problem of hearing loss has deep roots in human history. It is known that even in ancient times, doctors paid attention to hearing disorders. In Ancient Egypt, procedures were carried out to improve hearing, and in Ancient Greece, philosophers and doctors discussed methods for diagnosing and treating hearing disorders. In the 19th century, the first serious steps were taken towards understanding and classifying hearing loss, when it was established that some hearing disorders can be hereditary. In the 20th century, with the development of technology, audiometric tests became available, as well as prosthetics, which gave a new impetus to the diagnosis and correction of hearing perception in children.
Epidemiology
Statistics on newborn hearing loss are an important public health indicator. According to WHO, approximately 5% of the world’s population, or more than 466 million people, have varying degrees of hearing loss. Specifically, among newborns, hearing loss occurs in 1-3 out of 1,000 children. In addition, studies show that among children at high risk, such as those born prematurely or underweight, the rate of hearing loss can reach 10%. These data highlight the need for systematic newborn hearing screening for early diagnosis and intervention.
Genetic predisposition to this disease
Genetic predisposition is one of the main factors contributing to the development of hearing loss in infants. According to various data, about 50-60% cases of congenital hearing loss are associated with genetic mutations. Among the most involved genes are GJB2, SLC26A4 and MYO15. These genes are involved in the normal functioning of the inner ear and hearing function. For example, mutations in the GJB2 gene can cause autosomal recessive hearing loss, which often manifests itself in childhood. There is a need for genetic testing to determine the causes of hearing loss and choose the correct treatment.
Risk factors for the development of this disease
Risk factors for hearing loss in newborns can be divided into physical and chemical. Physical factors include:
- Preterm birth (before 37 weeks)
- Low birth weight (less than 1500 grams)
- Hypoxia during childbirth
Chemical factors most often include exposure to drugs such as:
- Amphotericin B
- High-dose aspirin in mothers
- Some antibiotics, such as gentamicin
Other possible factors such as viral infections (eg rubella, cytomegalovirus), the presence of hereditary diseases in the family and high noise levels in the environment are no less important.
Diagnosis of this disease
Diagnosing hearing loss in infants involves several testing options. Key symptoms may include lack of response to loud sounds or lack of concern due to problems perceiving the world around you. Laboratory tests may help identify infection, and radiological tests such as CT or MRI may be used to look for anatomical abnormalities in the middle or inner ear.
Other diagnostic methods include:
- Audiometry (hearing test)
- Otoacoustic emission (study of the activity of hair cells in the inner ear)
- Audiovisual stimulation
Differential diagnosis is important to exclude other causes of hearing loss, such as infectious diseases or pathologies of the auricle.
Treatment
Treatment for hearing loss in infants may involve different approaches, depending on the extent and cause of the hearing loss. General treatment may range from hearing aids to cochlear implantation. Pharmacological treatment may be used in cases of infection, but is not the primary approach in most situations.
Surgical treatment includes:
- Cochlear implantation - in case of profound hearing loss
- Tympanoplasty for middle ear anomalies
Other types of treatment include various methods of speech therapy correction and classes with speech therapists to develop speech skills.
List of medications used to treat this disease
Medications used may include:
- Antibiotics (such as amoxicillin) to treat infections
- Corticosteroids for swelling or inflammation
- Drugs to improve blood circulation, such as pentoxifylline
The need to prescribe a specific drug should be determined by the physician based on an analysis of the patient's condition.
Disease monitoring
Monitoring hearing loss involves regular audiometric testing and monitoring children's language development. Prognosis depends on early diagnosis and intervention; many children who receive the necessary help develop normally. Complications may manifest as speech and social adaptation difficulties, so a conscious approach to the child's education and development after diagnosis is essential.
Age-related features of the disease
Hearing loss in infants can manifest itself in different ways depending on the child's age. In newborns, the signs may not be noticeable, but as they age, delays in speech development and problems with perceiving the surrounding world become apparent. In infants, speech may be significantly slower, and in older children, difficulties in communication and social adaptation are possible.
Questions and Answers
- What are the main signs of hearing loss in infants? Typically this includes a lack of response to loud sounds, a lack of interest in speech sounds, and an inability to follow sound sources.
- How is hearing loss diagnosed in babies? Diagnostics include audiometry, otoacoustic emissions, and visual tests to help assess the response of the auditory system.
- What to do if your child is diagnosed with hearing loss? It is recommended to consult a specialist who will prescribe appropriate treatment and developmental activities.
- Can hearing loss in newborns be prevented? Partially yes, especially in cases related to genetics and infections, through screening and preventive measures.
- How long does it take to restore hearing? Recovery time depends on the treatment method, the degree of hearing loss and the individual characteristics of the child.
Advice from Dr. Oleg Korzhikov
Dr. Oleg Korzhikov recommends that parents pay attention to the early signs of hearing loss in newborns. "If you feel that your child does not respond to sounds, it is important to conduct diagnostics as soon as possible. Do not forget about regular hearing examinations, especially if there are cases of hearing loss in the family. Timely contact with specialists and treatment can significantly improve the quality of life of your child," he emphasizes.
