Pulmonary Artery Sling Follow-up
- Author: Stuart Berger, MD; Chief Editor: Steven R Neish, MD, SM more...
Further Inpatient Care
- Inpatient care in patients with pulmonary artery sling may be required for symptoms of airway obstruction and/or pneumonia.
- After surgical repair, these same symptoms may persist, although they should improve over time.
Further Outpatient Care
- Close follow-up care after surgery is required.
- Although airway symptoms should improve, follow patients closely, especially during times of upper respiratory infections.
- Similarly, monitor this group of patients closely for the possibility of left pulmonary artery stenosis after reimplantation of the vessel. This can be noninvasively assessed with echocardiography but rarely may require follow-up pulmonary artery angiography.
Transfer
- Patients hospitalized with significant stridor, in whom a vascular ring or pulmonary artery sling is suspected, should be transferred to a facility that can provide pediatric cardiology and pediatric cardiovascular surgery services.
Deterrence/Prevention
- No preventive measures are known.
Complications
- Because of associated tracheomalacia, tracheal stenosis, and/or bronchial stenosis, postoperative symptoms of airway obstruction are common. Left pulmonary artery stenosis may occur and can be progressive.
Prognosis
- With early diagnosis and surgical correction, prognosis is good.
- Surgical mortality is increased by coexisting tracheal or bronchial stenosis.
- Surgical survivors may be free of significant symptoms at long-term follow-up; however, because many demonstrate some persistent airway obstruction, they should be closely observed for both airway as well as pulmonary artery complications.
Patient Education
- Parents should be educated about issues with regard to airway obstruction and tracheobronchial toilet. Patients in the immediate postoperative period still may be at risk during respiratory illnesses because of increased secretions. Over time, with healing and improvement of the tracheomalacia/tracheal stenosis, these symptoms should improve.
Sade RM, Rosenthal A, Fellows K, et al. Pulmonary artery sling. J Thorac Cardiovasc Surg. Mar 1975;69(3):333-46. [Medline].
Loukanov T, Sebening C, Springer W, et al. Simultaneous management of congenital tracheal stenosis and cardiac anomalies in infants. J Thorac Cardiovasc Surg. Dec 2005;130(6):1537-41. [Medline].
Newman B, Cho YA. Left Pulmonary Artery Sling-Anatomy and Imaging. Semin Ultrasound CT MR. Apr 2010;31(2):158-170. [Medline].
Potts W, Holinger P. Anomalous left pulmonary artery causing obstruction to the right main stem bronchus. JAMA. 1954;155:1409.
Backer CL, Russell HM, Kaushal S, Rastatter JC, Rigsby CK, Holinger LD. Pulmonary artery sling: Current results with cardiopulmonary bypass. J Thorac Cardiovasc Surg. Jan 2012;143(1):144-51. [Medline].
Freedom R, Culham J. The Angiography of Congenital Heart Disease. 1998.
Grover FL, Norton JB Jr, Webb GE, et al. Pulmonary sling. Case report and collective review. J Thorac Cardiovasc Surg. Feb 1975;69(2):295-300. [Medline].
Morrow R, Huhta J. Aortic arch and pulmonary artery anomalies. In: The Science and Practice of Pediatric Cardiology. 1990:1444-7.
Niwayama G. Unusual vascular ring formed by the anomalous left pulmonary artery, with tracheal compression. Am Heart J. Mar 1960;59:454-61. [Medline].
Semple MG, Bricker L, Shaw BN, Pilling DW. Left pulmonary artery sling presenting as unilateral echogenic lung on 20-week detailed antenatal ultrasound examination. Pediatr Radiol. Aug 2003;33(8):567-9. [Medline].
Tesler UF, Balsara RH, Niguidula FN. Aberrant left pulmonary artery (vascular sling): report of five cases. Chest. Oct 1974;66(4):402-7. [Medline].

