Nighttime Snoring, Difficulty Breathing, Restlessness, and Growth Delay in Children: Signs of Sleep Apnea (SAOS)
Nocturnal snoring, breathing difficulties, restlessness, and growth delay are some of the symptoms associated with Obstructive Sleep Apnea Syndrome (SAOS), a condition affecting 1–3% of children. Early detection and treatment by a pediatric otolaryngologist are crucial to minimizing potential side effects.
Sleep Apnea in Children
Obstructive Sleep Apnea Syndrome (SAOS) in children is a sleep-related breathing disorder that affects approximately 2% of children, particularly those aged 2 to 5 years. It is characterized by repeated episodes of airway obstruction during sleep, either partial (hypopnea) or complete (apnea), leading to compromised ventilation. This results in a reduction in blood oxygen levels (hypoxemia), sometimes accompanied by increased carbon dioxide retention (hypercapnia). These interruptions can occur up to 400 times per night, preventing restorative deep sleep.
Nocturnal Snoring in Children
The most common symptom of SAOS in children is nighttime snoring. Although only a small percentage of snoring children have SAOS, snoring is the first indicator. Therefore, children who snore should be evaluated for other SAOS-related symptoms, such as:
- Breathing difficulties during sleep, with pauses or stops.
- Restless or agitated sleep.
- Night sweats.
- Bedwetting (enuresis).
- Nightmares or sleepwalking.
- Difficulty waking up in the morning.
- Excessive thirst upon waking.
- Morning headaches.
- Trouble concentrating or paying attention in school.
- Irritability or hyperactivity during the day.
- Growth delay.
If left untreated, SAOS can lead to more severe cardiovascular and pulmonary complications.
The most common cause of SAOS in children is enlarged tonsils and adenoids (adenoidal hypertrophy). Less frequent causes include obesity, certain craniofacial abnormalities that reduce the pharyngeal space, and neuromuscular diseases.
Diagnosis of Sleep Apnea in Children
Early diagnosis of sleep apnea in children involves an otolaryngological evaluation to assess for adenoidal hypertrophy or other abnormalities such as mouth breathing, nasal obstruction, or anatomical issues affecting the upper airway. Parents can also provide a video recording of the child’s sleep to aid the physician. In cases of diagnostic uncertainty, an overnight polysomnographic study may be performed. This study monitors various variables during sleep, quantifying ventilation and structural alterations and determining the severity of SAOS.
Tonsil Surgery in Children
Adenotonsillectomy, the surgical removal of the tonsils and adenoids, is the most common and effective treatment for children with SAOS, resolving symptoms in most cases. Advances in radiofrequency tonsil surgery have reduced operative time and complications, offering the option of partial tonsil reduction rather than complete removal. This significantly minimizes postoperative discomfort while preserving the tonsils’ immunological function, making it the preferred technique.
An alternative treatment is Continuous Positive Airway Pressure (CPAP) therapy. This device delivers constant airflow to the nose and mouth, keeping the airways open and preventing apneas.
CPAP may be the first-line treatment in cases of severe SAOS not caused by adenoidal hypertrophy but due to obesity or inoperable craniofacial abnormalities. It is also an option if SAOS persists after adenotonsillectomy.
