É apresentada a experiência inicial com a cirurgia minimamente invasiva para o tratamento das afecções da valva aórtica, através da miniesternotomia em L invertido. No período de junho a novembro de 1997, 12 pacientes adultos foram submetidos a troca da valva aórtica. A técnica cirúrgica constitui-se na substituição da valva aórtica por prótese biológica, através de minitoracotomia, com esternotomia parcial do tipo L invertido, estendendo-se da fúrcula ao quarto espaço intercostal direito. O reduzido trauma cirúrgico proporcionou recuperação mais precoce. Em 1 (18,3%) caso, houve necessidade de conversão para esternotomia total por dificuldade de saída de CEC. A evolução tardia foi obtida em 11 (91,6%) casos, estando todos os pacientes assintomáticos. We present our initial experience with minimally invasive surgery for the treatment of aortic valve diseases, through a minithoracotomy. From June to November of 1997, 12 patients underwent aortic valve replacement. The surgical technique utilized was ministernotomy from the notch to the fourth right intercostal space. There was no mortality, nor reoperation. There was necessity of complete sternotomy in one case because of difficult of leaving CPB. Late evolution was possible in 91.6% of the cases and they are all free of symptons
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