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Management of airway obstruction in patients with congenital heart defects
D A Davis1, J A Tucker, P Russo
1Pediatric Heart Institute, Temple University School of Medicine, Philadelphia, Pennsylvania.
Insights
Infants undergoing congenital heart defect repair can develop airway obstruction. Early identification and conservative management, including bronchoscopy and stenting, can improve outcomes.
Area of Science:
- Pediatric Cardiology
- Thoracic Surgery
- Pediatric Pulmonology
Background:
- Airway obstruction is a potential complication in infants after congenital heart defect (CHD) repair.
- Complex CHD cases, including interrupted aortic arch and tetralogy of Fallot, present unique surgical challenges.
Purpose of the Study:
- To investigate the incidence, causes, and management of airway obstruction in infants following CHD repair.
- To evaluate the effectiveness of conservative management strategies for these airway complications.
Main Methods:
- Retrospective review of seven infants with airway obstruction post-CHD repair.
- Diagnostic bronchoscopy to identify the cause of obstruction (hypoplasia or tracheobronchomalacia).
- Conservative treatment including therapeutic bronchoscopy, tracheotomy, stenting, and mechanical ventilation.
Main Results:
- Seven infants experienced airway obstruction post-CHD surgery.
- Causes included left bronchial hypoplasia (2) and tracheobronchomalacia with extrinsic compression (5).
- Conservative management led to successful weaning from ventilation and decannulation in four infants.
Conclusions:
- Airway anomalies should be screened for preoperatively in infants undergoing CHD repair.
- Surgical planning should aim to prevent extrinsic airway compression.
- Conservative management with bronchoscopy, tracheotomy, stenting, and prolonged ventilation is effective.
Abstract:
Airway obstruction may complicate the course of infants undergoing repair of congenital heart disease. Airway obstruction was encountered in seven patients following surgery for complex congenital heart defects (two with interrupted aortic arch, one with pulmonary atresia and a ventricular septal defect, one with tetralogy of Fallot and an abnormal left anterior descending coronary artery, one with truncus arteriosus, and two with complex univentricular heart). In four patients, a conduit was implanted at the time of surgery. In all cases, bronchoscopy accurately demonstrated the cause of the airway obstruction. Two infants had hypoplasia of the left bronchus, and five had tracheobronchomalacia associated with extrinsic compression of the airway by a great vessel or conduit. All were treated conservatively with therapeutic bronchoscopy, tracheotomy, and/or stenting with prolonged mechanical ventilation. Follow-up ranged from 2 to 40 months. Four infants have been weaned from mechanical ventilation and decannulated; two are awaiting decannulation; and one was decannulated and died awaiting surgical repair. To reduce morbidity in infants undergoing surgery for congenital heart disease, the presence of preoperative airway anomalies should be sought and surgery planned to avoid airway compression. Conservative management using diagnostic and therapeutic bronchoscopy, tracheotomy, and stenting together with prolonged ventilator care is rewarding.