Managing Airway and Breathing in Hallermann-Streiff Syndrome

For parents of a newborn with Hallermann-Streiff Syndrome (HSS), the most critical concern in the early months is often breathing. Because of the way HSS affects the structure of the face and jaw, infants are at a very high risk for Obstructive Sleep Apnea Syndrome (OSAS), a condition where the airway becomes narrow or blocked during sleep ^[1][2].

Managing your baby’s airway is a top priority for the medical team, and while the risks are serious, there are several effective ways to protect their breathing.

⚠️ Critical Safety Warning: Anesthesia Risks

Because of the extremely small jaw and narrow airway, placing a breathing tube (intubation) during any surgery is exceptionally difficult and carries life-threatening risks. Any procedure requiring anesthesia—even minor ones like cataract removal—must be performed at a specialized pediatric center by an experienced pediatric anesthesiologist equipped to manage a “difficult airway” ^[1].

Why Breathing is Challenging in HSS

The airway issues in HSS are caused by the physical shape of the head and face, which creates a narrow path for air:

• Micrognathia (Small Lower Jaw): In HSS, the lower jaw is significantly smaller and set back. This causes the tongue to sit further back in the mouth, where it can easily slide into the throat and block the airway (glossoptosis) ^[3][4].
• Midface Hypoplasia: The middle part of the face, including the nasal passages, may be smaller or narrower than usual, making it harder for the baby to breathe comfortably through their nose ^[3].

The Standard of Care: Monitoring and Support

Because airway obstruction can be life-threatening in infancy, your medical team will likely recommend intensive monitoring and support.

The Sleep Study (Polysomnogram)

A polysomnogram is the gold standard for assessing breathing. During this overnight test, doctors monitor your baby’s oxygen levels, heart rate, and effort to breathe. This helps determine how severe the sleep apnea is and what level of support is needed ^[1].

Non-Invasive Ventilation (NIV)

For many infants, the first line of treatment is non-invasive ventilation (NIV), such as CPAP (Continuous Positive Airway Pressure).

• How it works: A small mask is placed over the baby’s nose, and a machine provides a steady flow of air that acts as an “invisible splint” to keep the airway open ^[5].
• Benefits: NIV has been used successfully in HSS infants to manage severe sleep apnea and avoid more invasive procedures ^[1].

Surgical and Specialized Options

If non-invasive methods are not enough to keep your baby safe, the medical team may discuss surgical options to permanently or temporarily widen the airway.

• Mandibular Distraction Osteogenesis (MDO): This is a specialized surgery where the lower jaw is slowly lengthened over several days or weeks. By moving the jaw forward, the tongue is also moved forward, creating more space in the back of the throat ^[6][7].
• Tracheostomy: In some severe cases—especially if there are other airway issues like a floppy voice box (laryngomalacia)—a tracheostomy may be necessary. This involves creating a small opening in the neck to allow air to bypass the blockage in the mouth and throat ^[8][9].
• Orthodontic Approaches: In some instances, specialized dental appliances or “airway plates” may be used to help position the tongue forward and keep the airway open without surgery ^[2].

While the need for these interventions can be overwhelming, the goal is always to ensure your baby can breathe safely, feed well, and grow. Most children’s airways become more stable as they grow and their facial structures mature.