Abstract Objective: To analyze data related to surgical treatment in patients with congenital heart defects (CHD) and Down syndrome (DS) based on information from International Quality Improvement Collaborative Database for Congenital Heart Disease (IQIC). Methods: Between July 1, 2010 and December 31, 2017, 139 patients with CHD and DS underwent surgery at Hospital de Base and Hospital da Criança e Maternidade de São José do Rio Preto (FUNFARME)/Faculdade de Medicina de São José do Rio Preto - SP (FAMERP). A quantitative, observational and cross-sectional study was performed in which the pre, intra and postoperative data were analyzed in an IQIC database. The data included gender, age, prematurity, weight, preoperative procedures, diagnosis, associated cardiac and non-cardiac anomalies, Risk Adjustment for Congenital Heart Surgery (RACHS-1), type of surgery, cardiopulmonary bypass (CPB), perfusion time, aortic clamping time and CPB temperature, bacterial sepsis, surgical site infection and other infections, length of stay in intensive care unit (ICU), length of hospital stay and in-hospital mortality. Results: The most prevalent procedures were complete atrioventricular septal defect repair (58 - 39.45%), followed by closure of ventricular septal defect (36 - 24.49%). The RACHS-1 categories 1, 2, 3 and 4 were distributed as 22 (15%); 49 (33.3%); 72 (49%) and 4 (2.7%), respectively. There were no procedures classified as categories 5 or 6. Bacterial sepsis occurred in 10.2% of cases, surgical site infection in 6.1%, other infections in 14.3%. The median length of ICU stay was 5 days and the median length of hospital stay was 11 days. In-hospital mortality was 6.8%. Conclusion: Surgical treatment in patients with CHD and DS usually does not require highly complex surgical procedures, but are affected by infectious complications, resulting in a longer ICU and hospital length of stay with considerable mortality.

OBJETIVO: Analisar a segurança e a eficácia de um novo oxigenador de membrana denominado OXM -1500. MÉTODOS: No período de maio de 2005 a setembro de 2006, foram estudados seis ovinos da raça Santa Inês, sendo cinco machos e uma fêmea, com peso corpóreo médio de 14,1 (±5) kg, superfície corpórea de 0,6 (±0,2) m² e idade média de 3,8 (±1,5) meses. Todos foram submetidos a circulação extracorpórea (CEC) com avaliação nos tempos 10, 30, 60, 120, 180 e 240 minutos, obtendo-se os valores de taxa de transferência de oxigênio (TTO2) e de taxa de transferência de gás carbônico (TTCO2), hemoglobina sérica (HBS) e livre (HBL), plaquetometria, leucometria e taxa de transferência de calor. RESULTADOS: Houve adequadas TTO2 e TTCO2. A lesão da maioria dos elementos figurados do sangue foi insignificante, sem alterações dos níveis de HBS, HBL, plaquetas e o número de leucócitos diminuíram com o tempo. A troca de calor foi efetiva (p < 0,05). CONCLUSÃO: O oxigenador de membrana infantil OXM1500, testado em ovinos, mostrou-se com capacidade adequada de oxigenação, remoção de gás carbônico e pequena alteração da hemoglobina e plaquetas, com diminuição do número de leucócitos de forma esperada. O trocador de calor acoplado ao oxigenador foi eficaz nas variações de temperatura.

OBJECTIVE: To analyze the security and efficacy of a new membrane oxygenator, the so-called OXM - 1500. METHODS: From May 2005 to September 2006, six sheep of Santa Inês breed (five male and one female, respectively) were studied. The average body weight was 14.1 (±5) kg, body surface 0.6 (±0.2) m² and a mean age 3.8 (±1.5) months. All of them were submitted to extracorporeal circulation (CEC) with evaluation at 10, 30, 60, 120, 180 and 240 minutes. The following values were obtained: values of oxygen transference (TTO2) and carbon dioxide transference (TTCO2), haemoglobin (HBS) and free haemoglobin (HBL), the score of platelets and of leucocytes, and heat transference rate. RESULTS: TTO2 and TTCO2 were adequate. Lesion of the majority formed blood elements was insignificant; there no modifications in HBS, HBL levels; platelets and leucocytes decreased over time. Heat exchange was effective (p < 0.05). CONCLUSIONS: The membrane OXM - 1500 infant oxygenator, tested in sheep, showed adequate oxygenation capacity, CO2 removal capacity, and small alteration of haemoglobin and platelets without significant decrease of leucocytes, as expected. Heat exchanger connected to the oxygenator was efficient in temperature changes.

OBJETIVO: Comparar pacientes submetidos à ultrafiltração convencional (UFC), sem e com modificação técnica que permite aproveitamento do sangue residual do circuito de tubos e do oxigenador. MÉTODO: No período de março de 2002 a janeiro de 2005, 301 pacientes submetidos à correção de cardiopatias congênitas com circulação extracorpórea (CEC) foram analisados, retrospectivamente, e divididos em dois grupos: A - constituído de 130 pacientes submetidos à UFC clássica e grupo B - constituído de 171 pacientes submetidos à UFC com modificação técnica para aproveitamento do sangue residual. Foram comparadas variáveis demográficas, diagnóstico, tratamento cirúrgico, dados do período intra-operatório e pós- operatório, necessidade e volume de transfusões, exames laboratoriais e permanência hospitalar. RESULTADOS: Não houve diferença no valor inicial de hematócrito antes da CEC (p = 0,06), mas no grupo B, os valores após a ultrafiltração foram maiores (p < 0,0001). O grupo B foi mais transfundido nas primeiras 48 horas do pós-operatório (p < 0,0001). Não houve diferença no tempo de ventilação mecânica (p = 0,34), mas o tempo de uso de drogas vasoativas (p < 0,0001), tempo de uso de antibióticos (p = 0,0006), tempo de internação na unidade de terapia intensiva (p < 0,0001) e o tempo total de internação no pós-operatório (p < 0,0001) foram maiores no grupo B. CONCLUSÕES: A UFC com a modificação técnica não apresentou resultados superiores aos da UFC clássica, pois, apesar de elevar o hematócrito após a circulação extracorpórea, proporcionou maior sangramento no pós-operatório com maior necessidade de transfusão de hemoderivados e prolongamento do tempo de permanência hospitalar.

OBJECTIVE: To compare patients submitted to the conventional ultrafiltration (CUF) with and without a technical modification that allows use of residual blood from the circuit tubes and oxygenator. METHOD: From March 2002 to January 2005, 301 patients undergoing to congenital heart defects surgery with cardiopulmonary bypass (CPB) were retrospectively analyzed and divided in two groups: Group A - 130 submitted to CUF and Group B, 171 patients submitted to CUF with a technical modification that uses residual blood. Demographic data, diagnosis, surgical treatment, intra-operative and postoperative data, the need and amount of blood transfusions, laboratorial results and length of hospital stay were compared between the groups. RESULTS: There was no differences in the initial hematocrit before CPB (p = 0.06), but in the Group B, the values after ultrafiltration were higher (p <0.0001). Group B patients received more transfusions in the first 48 hours of the postoperative period (p <0.0001). There was no signicant difference in the time of mechanical ventilation (p = 0.34), but the inotropic support (p <0.0001), antibiotic therapy (p = 0.0006), length of stay in the intensive care unit (p <0.0001) and length of hospital stay (p <0.0001) were greater for Group B. CONCLUSIONS: CUF with the technical modification was not better than conventional CUF, because in spite of elevating the hematocrit after the CBP, it caused greater postoperative bleeding with a greater need of blood transfusions and longer hospitalar stays.