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Background  Reoperation for congenital heart disease may be associated with cardiac or vascular injuries during repeat sternotomy, resulting in increased mortality and/or morbidity rates. The aim of this study was to determine the frequency of these cardiac injuries and the associated outcome.    Methods  Between January 2012 and December 2013, 4256 sternotomy procedures were performed at the Pediatric Cardiac Center in Fuwai Hospital, including 195 repeat sternotomy procedures (RS). We retrospectively studied the clinical data of 195 RS patients and 250 randomly selected primary sternotomy (PS) patients. Demographic and operative details, major injures (MI), and clinical outcomes were compared between the two groups. We also assessed the risk factors for major injury and in-hospital mortality and morbidity.    Results  Significant differences were observed between the RS and PS groups in terms of skin incision to cardiopulmonary bypass(CPB) time, overall CPB time, cross-clamp time and blood requirement, and ventilation time ( p  < 0.001). MI during RS occurred in 7 of the 195 patients (3.6 %), while operative mortality was 1.0 % (2/195). However, in the RS patients, mortality and morbidity rates were not significantly different between the MI subgroup and the non-MI subgroup ( p  = 1.000 and 0.556, respectively). Additionally, no significant difference was found between the RS and PS groups in terms of mortality ( p  = 1.000) and morbidity ( p  = 0.125).    Conclusions  Both RS and MI are not associated with increased risk of operative mortality and morbidity. Outcomes for reoperative pediatric operations in contemporary practice are similar with those for primary operations.

Effect analysis of repeat sternotomy in pediatric cardiac operations