What is Congenital High Airway Obstruction Syndrome (CHAOS)?
Congenital High Airway Obstruction Syndrome (CHAOS) is a rare and serious condition that develops before birth. It occurs when a baby’s upper airway (windpipe) is blocked or does not form properly. This blockage may be due to absence or narrowing of the larynx (voice box) or trachea (windpipe).
Because air cannot pass out of the lungs, fluid gets trapped inside them. This causes the lungs to become very large and over-expanded. The enlarged lungs then press on the heart and other organs, leading to serious problems before or at birth.
What causes CHAOS?
CHAOS happens due to abnormal development of the baby’s airway during early pregnancy. The exact cause is not always known. In some cases, it may be linked to:
- Abnormal formation of the larynx or trachea
- Rare genetic or chromosomal conditions
- Certain syndromes associated with airway defects
Most cases occur randomly and are not caused by anything the parents did during pregnancy.
What are the signs and symptoms of CHAOS?
CHAOS is usually detected during a prenatal ultrasound. Common findings include:
- Very large and bright-looking lungs
- Flattened or pushed-down diaphragm
- A small or compressed heart
- Fluid buildup in the baby’s body (hydrops fetalis)
- Enlarged abdomen due to pressure inside the chest
At birth, babies with CHAOS may have:
- Severe breathing difficulty
- No sound or cry due to blocked airway
- Life-threatening respiratory distress
What are the complications of CHAOS?
CHAOS can lead to serious complications, such as:
- Severe breathing failure at birth
- Heart compression and poor blood circulation
- Fluid accumulation in the chest or abdomen
- Stillbirth or neonatal death if not treated promptly
How is CHAOS diagnosed?
CHAOS is mainly diagnosed before birth using:
- Prenatal Ultrasound: Shows enlarged lungs, small heart, and fluid buildup.
- Fetal MRI: Confirms the level and cause of airway blockage and helps plan treatment.
- Fetal Echocardiography: Checks how the heart is affected.
Early diagnosis is critical for planning safe delivery and treatment.
How is CHAOS managed or treated?
Management of CHAOS depends on early diagnosis and careful planning.
- Close Pregnancy Monitoring: Regular scans to monitor the baby’s condition.
- EXIT Procedure (Ex Utero Intrapartum Treatment): This is a specialized delivery technique. During a cesarean section, the baby remains attached to the placenta while doctors secure the airway (by tracheostomy or intubation). This allows oxygen to reach the baby before the umbilical cord is cut.
- Postnatal Surgery: After birth, surgery may be required to correct or bypass the airway blockage.
- NICU Care: Intensive care support is needed after delivery.
What is the outlook for babies with CHAOS?
CHAOS is a life-threatening condition, but outcomes have improved with early diagnosis and advanced fetal and neonatal care. Babies diagnosed early and delivered in specialized centers have a better chance of survival. Long-term outcome depends on:
- Severity and location of airway blockage
- Presence of other birth defects
- Success of airway surgery and supportive care
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When to call a doctor?
Contact your doctor immediately if:
- Prenatal scans show enlarged lungs or fluid buildup
- There is reduced fetal movement
- You are advised of any suspected airway abnormality in your baby
Early referral to a fetal medicine and pediatric surgery center is essential for the best possible outcome in babies with CHAOS.
Why choose Tender Palm Super-Speciality Hospital for Congenital High Airway Obstruction Syndrome treatment in Lucknow, India?
Tender Palm Super-Speciality Hospital offers advanced Congenital High Airway Obstruction Syndrome (CHAOS) treatment in Lucknow, India, at an affordable cost. We have a team of experienced fetal medicine specialists, neonatologists, anesthesiologists, and pediatric surgeons, known as some of the best doctors for managing rare and critical fetal conditions. We provide accurate prenatal diagnosis with advanced ultrasound and fetal MRI, personalized perinatal care planning, and specialized airway management and surgical treatment at birth when required. Our experienced fetal and neonatal care team has decades of experience in successfully treating Congenital High Airway Obstruction Syndrome in Lucknow, India.
To seek an Expert Consultation for Congenital High Airway Obstruction Syndrome treatment in Lucknow, India
Call us at +91-9076972161
Email at care@tenderpalm.com
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