RESUMO
BACKGROUND: Experience with complete repair of congenital heart defects associated with unilateral absence of a pulmonary artery is limited. The aim of this retrospective study was to present our surgical experience of this complex category of patients, to analyze immediate results of surgical interventions, and to suggest a rational surgical strategy. METHODS: Of 37 patients with a single pulmonary artery who underwent complete repair of associated heart defects, the left or right pulmonary artery was absent in 32 and 5, respectively. The most frequent heart defects were tetralogy of Fallot (n = 25) and ventricular septal defect (n = 8). The median age of these patients was 7.1 years. Preoperative examinations included echocardiography, cardiac catheterization and angiocardiography, with quantitative assessment of the single pulmonary artery. In-hospital parameters of surgical outcome were analyzed. RESULTS: Recorded hospital mortality was 2.7% (1/37). The single death was in a patient with tetralogy of Fallot, agenesis of the left pulmonary artery, and a small diameter of the contralateral pulmonary artery (Nakata index 174 mm(2)·m(-2)). The right-to-left ventricular systolic pressure ratio after complete tetralogy of Fallot repair in patients who survived the operation was 0.58 ± 0.11. CONCLUSIONS: Complete repair of congenital heart defects in patients with unilateral absence of a pulmonary artery is associated with a relatively low risk. If the hilar artery is of adequate size, surgical intervention should attempt restoration of the communication between the disconnected hilar artery and the pulmonary trunk, in addition to repairing the heart defects.
Assuntos
Procedimentos Cirúrgicos Cardíacos , Cardiopatias Congênitas/cirurgia , Artéria Pulmonar/cirurgia , Adolescente , Adulto , Procedimentos Cirúrgicos Cardíacos/efeitos adversos , Procedimentos Cirúrgicos Cardíacos/mortalidade , Criança , Pré-Escolar , Feminino , Cardiopatias Congênitas/diagnóstico , Cardiopatias Congênitas/mortalidade , Cardiopatias Congênitas/fisiopatologia , Mortalidade Hospitalar , Humanos , Lactente , Masculino , Complicações Pós-Operatórias/mortalidade , Artéria Pulmonar/anormalidades , Artéria Pulmonar/fisiopatologia , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento , Adulto JovemRESUMO
OBJECTIVES: Experience with the palliative treatment of congenital heart defects (CHDs) associated with unilateral absence of the pulmonary artery (UAPA) is limited. There is a description of 32 interventions in the available literature. The aim of this retrospective study was to present our experience with palliative interventions in patients with cyanotic CHDs associated with UAPA and to suggest a rational surgical strategy. METHODS: Twenty-nine patients were subjected to palliative interventions. All of them had the following cyanotic CHDs with agenesis of the left pulmonary artery: tetralogy of Fallot (n = 26) or double outlet right ventricle (n = 3). Twenty patients were subjected to a single and 9 to multiple staged palliative operations. Patients were grouped according to the type of initial palliation to assess the clinical and haemodynamic results of each surgical intervention: Group 1: systemic-to-pulmonary shunts (n = 13); Group 2: transluminal balloon pulmonary valvuloplasty (n = 5); Group 3: palliative reconstruction of the right ventricular outflow tract (n = 11). The median age of patients at the initial palliative intervention was 2.6 years. Twenty-three of 27 discharged patients were followed up for a median period of 3 years. RESULTS: Hospital mortality in our series reached 7% (2 of 29 patients). Both lethal outcomes occurred after palliative reconstruction of the right ventricular outflow tract was performed as a sole intervention. The assessment of angiographic parameters has shown that palliative reconstruction of the right ventricular outflow tract provided more significant and uniform enlargement of the pulmonary artery than systemic-to-pulmonary shunts or transluminal balloon pulmonary valvuloplasty. Fifty-nine percent of patients (17 of 29 patients) were subjected to complete repair of CHDs during the follow-up. CONCLUSIONS: Palliative surgical treatment of CHDs associated with UAPA can be performed with a relatively low risk. Systemic-to-pulmonary artery shunt and transluminal balloon pulmonary valvuloplasty are methods of choice in patients with non-severe hypoplasia of the single pulmonary artery. The intravascular intervention is indicated more in patients with a prevailing valvular component of the pulmonary stenosis. Palliative reconstruction of the right ventricular outflow tract is a more favourable procedure for patients with a severe hypoplasia of the single pulmonary artery.
Assuntos
Procedimentos Cirúrgicos Cardíacos , Cardiopatias Congênitas/cirurgia , Cuidados Paliativos , Artéria Pulmonar/cirurgia , Valvuloplastia com Balão , Implante de Prótese Vascular , Procedimentos Cirúrgicos Cardíacos/efeitos adversos , Procedimentos Cirúrgicos Cardíacos/mortalidade , Criança , Pré-Escolar , Feminino , Cardiopatias Congênitas/diagnóstico , Cardiopatias Congênitas/mortalidade , Cardiopatias Congênitas/fisiopatologia , Hemodinâmica , Mortalidade Hospitalar , Humanos , Lactente , Masculino , Artéria Pulmonar/anormalidades , Artéria Pulmonar/fisiopatologia , Procedimentos de Cirurgia Plástica , Estudos Retrospectivos , Fatores de Tempo , Resultado do TratamentoAssuntos
Anormalidades Múltiplas , Artérias Brônquicas/anormalidades , Circulação Colateral , Pulmão/irrigação sanguínea , Artéria Pulmonar/anormalidades , Circulação Pulmonar , Malformações Vasculares/complicações , Artérias Brônquicas/fisiopatologia , Aneurisma Coronário/complicações , Aneurisma Coronário/fisiopatologia , Aneurisma Coronário/terapia , Circulação Coronária , Embolização Terapêutica , Humanos , Isquemia Miocárdica/etiologia , Isquemia Miocárdica/fisiopatologia , Pneumonectomia , Resultado do Tratamento , Malformações Vasculares/terapiaAssuntos
Valva Aórtica/patologia , Procedimentos Cirúrgicos Cardíacos , Dupla Via de Saída do Ventrículo Direito/cirurgia , Comunicação Interventricular/cirurgia , Transposição dos Grandes Vasos/cirurgia , Procedimentos Cirúrgicos Cardíacos/efeitos adversos , Procedimentos Cirúrgicos Cardíacos/mortalidade , Intervalo Livre de Doença , Dupla Via de Saída do Ventrículo Direito/diagnóstico , Dupla Via de Saída do Ventrículo Direito/mortalidade , Comunicação Interventricular/diagnóstico , Comunicação Interventricular/mortalidade , Ventrículos do Coração/patologia , Ventrículos do Coração/cirurgia , Humanos , Seleção de Pacientes , Fatores de Tempo , Transposição dos Grandes Vasos/diagnóstico , Transposição dos Grandes Vasos/mortalidade , Resultado do TratamentoAssuntos
Anormalidades Múltiplas/cirurgia , Aorta/cirurgia , Insuficiência da Valva Aórtica/etiologia , Procedimentos Cirúrgicos Cardíacos , Cardiopatias Congênitas/cirurgia , Seio Aórtico/cirurgia , Anormalidades Múltiplas/patologia , Adolescente , Adulto , Aorta/anormalidades , Insuficiência da Valva Aórtica/patologia , Insuficiência da Valva Aórtica/cirurgia , Criança , Pré-Escolar , Feminino , Cardiopatias Congênitas/complicações , Cardiopatias Congênitas/patologia , Ventrículos do Coração/anormalidades , Ventrículos do Coração/cirurgia , Humanos , Lactente , Recém-Nascido , Masculino , Índice de Gravidade de Doença , Seio Aórtico/anormalidades , Terminologia como Assunto , Resultado do TratamentoRESUMO
We describe a rare case of anomalous origin of the left pulmonary artery from the ascending aorta with concomitant double-outlet right ventricle in a 2-year-old boy. He underwent successful 2-stage surgical treatment with transluminal balloon pulmonary valvuloplasty, followed by complete repair. A follow-up examination at 4 years after the operation showed good results.
Assuntos
Anormalidades Múltiplas , Aorta/anormalidades , Dupla Via de Saída do Ventrículo Direito , Artéria Pulmonar/anormalidades , Anormalidades Múltiplas/diagnóstico por imagem , Anormalidades Múltiplas/cirurgia , Aorta/patologia , Aorta/cirurgia , Aortografia , Bioprótese , Prótese Vascular , Implante de Prótese Vascular/instrumentação , Procedimentos Cirúrgicos Cardíacos , Ponte Cardiopulmonar , Cateterismo , Pré-Escolar , Dupla Via de Saída do Ventrículo Direito/diagnóstico por imagem , Dupla Via de Saída do Ventrículo Direito/cirurgia , Humanos , Masculino , Desenho de Prótese , Artéria Pulmonar/diagnóstico por imagem , Artéria Pulmonar/cirurgia , Resultado do TratamentoAssuntos
Anomalias dos Vasos Coronários/cirurgia , Fístula/cirurgia , Átrios do Coração/anormalidades , Fístula Vascular/cirurgia , Anomalias dos Vasos Coronários/diagnóstico por imagem , Ecocardiografia Transesofagiana , Eletrocardiografia , Feminino , Fístula/diagnóstico por imagem , Átrios do Coração/diagnóstico por imagem , Átrios do Coração/cirurgia , Insuficiência Cardíaca/etiologia , Humanos , Ligadura , Pessoa de Meia-Idade , Técnicas de Sutura , Tomografia Computadorizada por Raios X , Fístula Vascular/diagnóstico por imagemRESUMO
BACKGROUND: Tetralogy of Fallot with unilateral absence of the pulmonary artery is a rare congenital heart defect that still represents a surgical challenge. The purpose of this study is to summarize our experience of surgical treatment of this complex lesion. METHODS: From 1983 to 2003, 27 patients with tetralogy of Fallot and unilateral absence of the left (n = 25) or right (n = 2) pulmonary artery underwent different surgical interventions. The age of patients ranged from 40 days to 37 years (median, 5.3 years). Pulmonary arterial Nakata index and Nakata index Z-score were used for the quantitative assessment of the contralateral pulmonary artery. Twenty patients underwent various palliative procedures, namely Blalock-Taussig or Gore-Tex shunt, transluminal balloon pulmonary valvuloplasty, and reconstruction of right ventricular outflow tract without ventricular septal defect closure. At a median interval of 3.6 years after palliation, 13 patients underwent complete repair of tetralogy of Fallot. In the other 7 patients, complete repair was performed as a primary intervention. RESULTS: Hospital mortality after palliation and after a complete repair was the same and reached 5%. Sixteen patients with the Nakata index greater than 200 mm2/m2 and Z-score greater than -4 survived after a complete repair. One of 4 patients with Nakata index less than 200 mm2/m2 and Z-score less than -4 died after surgery. CONCLUSIONS: Majority of patients with tetralogy of Fallot and unilateral absence of the pulmonary artery require palliative intervention as a first step of surgical treatment. Nakata index greater than 200 mm2/m2 and Nakata index Z-score greater than -4 are criteria for a successful complete repair.