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Are more extensive procedures warranted at the time of aortic arch reoperation?

OBJECTIVES: To determine the early and late outcomes of patients undergoing aortic arch reoperations.

METHODS: The follow-up of 70 patients undergoing a second arch operation (excluding univentricular physiology) between 1979 and 2015 was reviewed. Median age at initial arch operation and second operation was 9 days (interquartile range: 5-35) and 10 months (interquartile range: 3-64), respectively. The most common indication for initial arch operation was coarctation in 79% (55/70). The most common indication for a second arch operation was arch reobstruction in 90% (63/70).

RESULTS: There were 2 hospital deaths (2/70, 3%) and 3 early third arch operations (3/70, 4%). Late follow-up was available in 94% (64/68) of hospital survivors. After a mean of 9 ± 7 years, there were 5 late deaths (5/64, 8%). Fifteen-year survival was 90% (95% confidence interval: 75-96). Arch reobstruction (echocardiogram gradient >25 mmHg/third operation for reobstruction) was present in 28% (18/64) and 16% (10/64) required a third arch operation. Fifteen-year freedom from arch reobstruction and third arch operation was 63% (95% confidence interval: 43-78) and 74% (95% confidence interval: 52-87), respectively. On multivariable analysis, hypoplastic arch at initial arch repair (P = 0.03) and interposition graft at second arch operation (P < 0.0001) were risk factors for third arch operation.

CONCLUSIONS: Patients undergoing a second arch operation have significant rates of arch reobstruction and reoperation. The high rates of arch reobstruction and third arch operation warrant more extensive procedures at the time of second arch operation, especially in patients with a hypoplastic arch. Regular long-term monitoring after arch reoperation is mandatory.

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