Vascular ring surgery is considered a low-risk procedure with high survival rates. In a multi-institution study of 360 children, the late mortality rate was 0.3%, and the 10-year overall survival rate was 96.8%. That said, like any surgery involving structures near the heart and airway, it carries real complications worth understanding before you or your child goes into the operating room.
Overall Complication Rates
Across a study of 200 patients who underwent vascular ring division, 7.5% experienced immediate postoperative complications. That places this surgery firmly in the “low complication” category for cardiothoracic procedures. Most children leave the hospital within 2 to 3 days, and serious events requiring emergency intervention are uncommon.
The two surgical approaches used today are traditional open surgery (thoracotomy) and a minimally invasive camera-guided technique (thoracoscopy, or VATS). Both have similar complication rates. In patients with the most common ring anatomy, complications occurred in 9% of VATS cases and 4% of open cases, a difference that was not statistically significant. The main advantage of the minimally invasive approach is a shorter hospital stay: about 1.2 days compared to 3.4 days for open surgery.
Specific Risks to Know About
The two complications that come up most often in the research are chylothorax and nerve injury.
Chylothorax is a leak of lymphatic fluid into the chest cavity. It occurred in about 13% of patients in a recent multicenter study. This sounds alarming, but most cases resolve with dietary changes or temporary drainage. It typically means a longer hospital stay while the leak heals, rather than a second surgery.
Recurrent laryngeal nerve injury affects the nerve that controls the vocal cords. In one series, this happened in about 8% of patients. It can cause hoarseness, a weak cry in infants, or difficulty swallowing. Some nerve injuries recover on their own over weeks to months, while others may be permanent and require speech therapy or further evaluation by an ear, nose, and throat specialist.
How Often Is a Second Surgery Needed
A 36-year single-institution study found that about 89% of patients were free from reoperation at the 20-year mark. That means roughly 1 in 9 patients eventually needed another procedure, though this played out over two decades. The most common reason was persistent compression of the airway even after the ring itself was successfully divided.
Tracheomalacia, a condition where the trachea walls are floppy or weakened from prolonged compression, is the strongest predictor of needing reoperation. If your child has tracheomalacia identified before surgery (usually through a scope exam of the airway), the surgical team will likely discuss a longer monitoring plan. Importantly, even among the patients who had persistent tracheal compression or tracheomalacia in long-term follow-up, none required direct tracheal surgery.
What Recovery Looks Like
Most children spend 2 to 3 days in the hospital after an uncomplicated repair. Pain management, monitoring for fluid leaks, and confirming that breathing has improved are the main goals during that window. Children who undergo the minimally invasive approach often go home even sooner.
The dramatic symptoms that prompted surgery, like noisy breathing, chronic cough, or difficulty feeding, often improve quickly once the compressing vessel is divided. However, full resolution can take time. The trachea and esophagus may need weeks or months to regain their normal shape, especially if the ring was tight or present since birth.
Lingering Symptoms After Surgery
About 5.6% of children in the multi-institution study had residual symptoms during long-term follow-up. The most common was stridor (noisy breathing on inhalation), which persisted in 4.2% of patients. Coughing, wheezing, and recurrent respiratory infections were less common, each affecting fewer than 1% of patients. Only one patient had a persistent gastrointestinal symptom (choking).
These lingering symptoms were strongly linked to tracheomalacia. When the airway has been compressed for a long time before surgery, the cartilage rings of the trachea can be permanently softened. Removing the vascular ring eliminates the external pressure, but it cannot reverse structural changes already present in the airway wall. For most of these children, symptoms are mild and manageable rather than disabling. They tend to improve as the child grows and the airway naturally stiffens and widens with age.