Laryngeal Cartilage Softening in Infants: Key Concerns and Care Tips - Pediatrics

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Laryngeal cartilage softening syndrome


Hello Doctor: My sister is currently a little over two months old (she will be three months on the 15th).
We took her to see the doctor yesterday, and the doctor mentioned that her laryngeal cartilage is underdeveloped and developing more slowly.
I would like to ask a few questions.
Does she need to have regular follow-ups at the hospital? How should I position her while she sleeps to make her more comfortable? Should she lie on her back, right side, or left side? Are children with this condition more prone to spitting up? The doctor said this is due to the slower cartilage development; will this also affect her overall development? My sister currently weighs 5.5 kg and is 56 cm tall (she was born weighing 2.6 kg).
Is this growth curve acceptable? Thank you for your response! Wishing you all the best!

Xiao Yu Er, 20~29 year old female. Ask Date: 2009/02/08

Dr. He Shenglong reply Pediatrics


Hello: Neonatal laryngeal cartilage hypoplasia can cause a stridor during inhalation, which typically diminishes as the child grows older and usually resolves by three to four months of age.
This condition is not related to overall growth and development, and your child's growth curve is within the normal range.
Children with this symptom may be more prone to spitting up, so it is essential to ensure proper burping after feeding (avoid laying them down immediately after feeding).
The sleeping position should not affect the development of laryngeal cartilage hypoplasia.
However, if you notice that the symptoms are worsening, it is advisable to consult an otolaryngologist at a major hospital to rule out any other potential pathologies.
Thank you for your message!

Reply Date: 2009/02/08

More Info


Laryngeal cartilage softening, or laryngomalacia, is a common condition in infants characterized by the softening of the cartilage structures of the larynx (voice box). This condition can lead to breathing difficulties, particularly during inhalation, and is often accompanied by a distinctive sound known as stridor. While it can be concerning for parents, it is important to understand that laryngomalacia is generally a benign condition that often resolves as the child grows.


Key Concerns and Care Tips
1. Regular Monitoring and Follow-Up:
It is advisable to have regular follow-ups with your pediatrician or an ENT specialist to monitor your infant's condition. While many infants with laryngomalacia improve significantly by the time they reach 12 months of age, some may require closer observation, especially if they exhibit severe symptoms such as difficulty breathing, feeding problems, or failure to thrive. Your healthcare provider will guide you on the appropriate intervals for follow-up visits based on your child's specific situation.

2. Sleeping Position:
When it comes to sleep, the position can influence comfort and breathing. Generally, it is recommended that infants sleep on their backs, as this position is associated with a lower risk of Sudden Infant Death Syndrome (SIDS). However, if your child seems more comfortable in a slightly elevated position, you can use a wedge or elevate the head of the crib mattress (never place pillows directly in the crib with an infant). Side sleeping is also acceptable, but ensure that your baby is not rolling onto their stomach.

3. Feeding and Reflux:
Infants with laryngomalacia may be more prone to gastroesophageal reflux (GER), which can lead to increased spitting up or vomiting. To minimize this, ensure that your baby is burped adequately during and after feedings. Avoid laying your baby down immediately after feeding; keeping them upright for at least 30 minutes can help reduce the likelihood of reflux.

4. Developmental Concerns:
While laryngomalacia itself does not directly affect overall development, it is crucial to monitor your child's growth and developmental milestones. The growth parameters you provided (weight of 5.5 kg and height of 56 cm at nearly three months) appear to be within a normal range, especially considering your baby’s birth weight of 2.6 kg. Regular check-ups will help ensure that your child is meeting developmental milestones appropriately.

5. Signs to Watch For:
Keep an eye out for any worsening symptoms, such as increased stridor, difficulty feeding, or signs of respiratory distress (e.g., rapid breathing, retractions). If you notice any of these signs, it is important to seek medical attention promptly.

6. Supportive Care:
Providing a calm and supportive environment can help your baby feel more comfortable. Gentle rocking, soothing sounds, and maintaining a comfortable room temperature can be beneficial.
In conclusion, while laryngomalacia can be concerning, most infants outgrow the condition without any long-term effects. Regular follow-ups with your healthcare provider, monitoring your child’s growth and development, and ensuring proper feeding practices will help manage the condition effectively. If you have any further concerns or if your child's symptoms change, do not hesitate to reach out to your pediatrician for guidance.

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