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Published on: December 11, 2017
[Mid-term results of treatment of aortic coarctation in neonates]
S Di Filippo1, A Bozio, F Sassolas
1Service de cardiologie C, hôpital cardiovasculaire et pneumologique Louis-Pradel, Lyon.
Insights
This study on coarctation of the aorta in neonates found that associated aortic arch hypoplasia and large ventricular septal defects increase mortality risk. Restenosis occurred in 28.5% of cases, often before six months post-surgery.
Area of Science:
- Pediatric Cardiology
- Congenital Heart Disease
- Neonatal Surgery
Context:
- Coarctation of the aorta is a critical congenital heart defect.
- Neonates often present with isolated or complex forms of coarctation.
- Associated anomalies like ventricular septal defects and aortic arch hypoplasia significantly impact outcomes.
Purpose:
- To analyze the clinical presentation, surgical management, and outcomes of neonates with coarctation of the aorta.
- To identify risk factors for mortality and restenosis in this population.
- To evaluate the long-term survival and restenosis rates after surgical repair.
Summary:
- A cohort of 122 neonates with coarctation of the aorta was studied, with 75% being male. Isolated coarctation occurred in 54 cases, while 72 had associated ventricular septal defects. Aortic arch hypoplasia was noted in 52 cases, more frequently with ventricular septal defects. Diagnosis was delayed in isolated coarctation compared to complex cases. Surgical repair involved thoracotomy in 112 patients and sternotomy in 7. Early mortality was 2.5%, with late mortality at 9.5%, higher in cases with large ventricular septal defects and aortic arch hypoplasia. Global survival was 98.2% at 8 years, but survival for coarctation with ventricular septal defect was 74.7% at 8 years, particularly worse with large interventricular shunts. Restenosis occurred in 28.5% of cases, typically within 6 months, and was managed with percutaneous aortic angioplasty.
- Key risk factors for increased mortality included aortic arch hypoplasia and large ventricular septal defects. Restenosis was a significant complication, observed in approximately one in four patients, predominantly in the early postoperative period.
Impact:
- This research highlights critical factors influencing survival in neonates with coarctation of the aorta.
- Understanding these risk factors aids in surgical planning and patient management.
- The findings underscore the importance of timely diagnosis and intervention for improved long-term outcomes and reduced restenosis rates.
Abstract:
Between 1990 and 1997, 122 neonates aged 8.7 +/- 7.5 days, 75 boys (61.4%), were referred for coarctation of the aorta which was isolated (54 cases) or associated with one (52 cases) or more (20 cases) ventricular septal defects. Hypoplasia of the aortic arch, diagnosed in 52 cases, was more common in children with ventricular septal defects (p < 0.05). The diagnosis was later in isolated coarctation (10.6 +/- 6.8 days) than in cases with shunts (7.8 +/- 7.7 days) and/or hypoplasia of the aortic arch (5.1 +/- 4.3 days). One hundred and nineteen patients were operated, including 112 of left thoracotomy (24 had pulmonary artery banding in addition) at the age of 1.1 +/- 2.7 months, and 7 by sternotomy of first intention for aortic repair and closure of ventricular septal defect. After thoracotomy, closure of the ventricular septal defect was undertaken at 11.3 +/- 10.8 months in children who had undergone previous pulmonary banding and at 3.5 +/- 2.4 months in the absence of banding. Early mortality after aortic repair was 2.5% and late mortality 9.5%, higher in cases of large ventricular septal defects and hypoplasia of the aortic arch (p < 0.001). Follow-up varied from 55 days to 7.8 years (3.99 +/- 2.24 years). Global survival was 97.5% at 1 month and 98.2% at 8 years. In coarctation with ventricular septal defect survival was 95.6% at 1 month and 74.7% at 8 years with a worse prognosis in cases with large single interventricular shunts. Restenosis was observed in 28.5% of cases, 2.25 +/- 3.8 months after aortic surgery (88.5% of cases before the 6th month) and was generally treated by percutaneous aortic angioplasty (10 cases performed 13.5 +/- 12 months after surgery). In all, two factors seemed to increase the risk of death (hypoplasia of the aortic arch and large ventricular septal defects) and restenosis was observed in 1 out of 4 cases, usually before the 6th postoperative month.
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