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      Indicators of surgical treatment of patent ductus arteriosus in preterm neonates in the first week of life Translated title: Indicadores para o tratamento cirúrgico na persistência do ducto arterial em neonatos prematuros na primeira semana de vida

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          Abstract

          Objective

          To identify clinical and echocardiographic indicators of the necessity for early surgical closure of patent ductus arteriosus in preterm neonates.

          Methods

          The prospective study was conducted at the Neonatal Unit of Hospital Municipal Odilon Behrens between 2006 and 2010. The study population comprised 115 preterm neonates diagnosed with patent ductus arteriosus in the first week after birth, of whom 55 (group S) were submitted to clinical and or surgical closure and 60 (group NS) received non-surgical treatment. The parameters analyzed were birth weight, diameter of the ductus arteriosus (DAD), left atrial-to-aortic root diameter ratio (LA:Ao), the quotient of DAD 2 and birth weight (mm 2/kg), and ductal shunting.

          Results

          The study population comprised 58 males and 57 females. The average birth weight of group S (924 ± 224.3 g) was significantly ( P=0.049) lower than that of group NS (1012.3 ± 242.8 g). The probability of the preterm neonates being submitted to surgical closure was 62.1% ( P=0.006) when the DAD2/birth weight index was > 5 mm 2/kg, 72.2% ( P=0.001) when the LA:Ao ratio was > 1.5, and 61.2% when ductal shunting was high ( P=0.025).

          Conclusion

          The parameters DAD 2/birth weight index > 5 mm 2/kg, LA:Ao ratio > 1.5 and high ductal shunting were statistically significant indicators ( P<0.05) of the need for surgical closure of patent ductus arteriosus in low birth weight preterm neonates. Moreover, when an LA:Ao ratio > 1.5 was associated with the occurrence of shock, the probability of surgical closure increased to 78.4%.

          Translated abstract

          Objetivo

          Identificar parâmetros clínicos e ecocardiográficos para a indicação do tratamento cirúrgico precoce da persistência do ducto arterial.

          Métodos

          Esse estudo prospectivo foi conduzido na Unidade Neonatal do Hospital Municipal Odilon Behrens entre 2006 e 2010. A população estudada compreendeu 115 neonatos prematuros diagnosticados com persistência do ducto arterial na primeira semana após o nascimento, dos quais 55 (grupo S) foram submetidos ao tratamento clínico e ou cirúrgico e 60 (grupo NS) ao tratamento clínico. Os parâmetros analisados foram peso ao nascer, diâmetro do ducto arterial (DAD), relação diâmetro do átrio esquerdo pelo diãmetro da aorta (AE/Ao), índice DAD2/peso ao nascer e fluxo no ducto.

          Resultados

          O estudo abrangeu 58 pacientes do sexo masculino e 57 do feminino. O peso médio ao nascer do grupo S (924 ± 224,3 g) foi significativamente ( P=0,049) menor do que do grupo NS (1012,3 ± 242,8 g). A probabilidade dos neonatos prematuros serem submetidos à cirurgia foi 62.1% ( P=0,006) quando o índice DAD2/peso ao nascer era > 5 mm2/kg, 72,2% ( P=0,001) quando a razão LA:Ao era > 1,5 e 61,2% ( P=0,025) quando o fluxo no ducto era alto.

          Conclusão

          Os parâmetros DAD 2/peso ao nascer > 5 mm 2/kg, razão LA:Ao > 1,5 e alto fluxo no ducto foram preditores estatisticamente significativos ( P<0,05) da necessidade de fechamento cirúrgico do persistência do ducto arterial em neonatos prematuros com baixo peso ao nascer. Adicionalmente, quando a razão LA:Ao > 1,5 estava associada ao choque, a probabilidade de tratamento cirúrgico aumentou para 78,4%.

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          Most cited references20

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          • Abstract: not found
          • Article: not found

          Failure of ductus arteriosus closure is associated with increased mortality in preterm infants

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            • Record: found
            • Abstract: not found
            • Article: not found

            Clinical and echocardiographic diagnosis of patent ductus arteriosus in premature neonates

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              Video-thoracoscopic surgical interruption of patent ductus arteriosus: Routine experience in 332 pediatric cases

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                Author and article information

                Journal
                Rev Bras Cir Cardiovasc
                Rev Bras Cir Cardiovasc
                Revista Brasileira de Cirurgia Cardiovascular : órgão oficial da Sociedade Brasileira de Cirurgia Cardiovascular
                Sociedade Brasileira de Cirurgia Cardiovascular
                0102-7638
                1678-9741
                Oct-Dec 2013
                Oct-Dec 2013
                : 28
                : 4
                : 504-508
                Affiliations
                [1 ] Federal University of Minas Gerais, School of Mediciney, Belo Horizonte, MG, Brazil.
                [2 ] Hospital Municipal Odilon Behrens, Department of Pediatrics, Belo Horizonte, Minas Gerais, Brazil.
                Author notes
                Correspondence address: Renato Braulio, Hospital das Clínicas da UFMG, Av. Prof. Alfredo Balena, 110 - 5º andar - Santa Efigênia - Belo Horizonte, MG, Brazil - Zip code: 30130-100. E-mail: renatobraulio1@ 123456ig.com.br
                Article
                10.5935/1678-9741.20130082
                4389417
                24598956
                daa2c6ca-bb1f-4cba-8983-2197597265d5

                This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 01 August 2013
                : 08 October 2013
                Categories
                Original Article

                ductus arteriosus, patent,echocardiography,infant, premature, diseases

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