Some patients who have had an ASO may need a reintervention to alleviate pulmonary branch artery stenosis. Although the arterial diameter could be increased in some cases using balloon dilation, the improvements did not last, and a high recurrence rate was observed. These unfavourable results led to the use of stents, which were significantly more effective [335]. The risks of early dissection and vessel rupture are known and manageable. More recently, a potentially more serious complication has been described—creation of an aortopulmonary window. This complication cannot be avoided entirely because overdilation is necessary to achieve long-term success, but cardiologists should be aware of it [336, 337].
Recommendations for late neopulmonary outflow tract obstruction
 |
|
RVOT: right ventricular outflow tract.
aClass of recommendation.
bLevel of evidence.
cReferences.
Recommendations for late neopulmonary outflow tract obstruction
|
|
RVOT: right ventricular outflow tract.
aClass of recommendation.
bLevel of evidence.
cReferences.
