Avaliação da aptidão cardiorrespiratória de crianças com displasia broncopulmonar

• Autor(a) principal: Abreu, Lilian Rodrigues
• Data de Publicação: 2007
• Outros Autores: Costa-Rangel, Raquel Castro Andrade da, Gastaldi, Ada Clarice [UNIFESP], Guimarães, Rogério Contato, Cravo, Sergio Luiz [UNIFESP], Sologuren, Maria José Junho
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNIFESP
• Texto Completo: http://dx.doi.org/10.1590/S1413-35552007000200004; http://repositorio.unifesp.br/handle/11600/3622
• topic: Chronic neonatal lung disease; Children; prematurity; cardiopulmonary test; gas analysis; exercise-induced bronchospasm; doença pulmonar crônica neonatal; Crianças; prematuridade; teste cardiopulmonar; análise de gases; broncoespasmo induzido pelo exercício

OBJECTIVE: To assess cardiorespiratory capacity and investigate the presence of exercise-induced bronchospasm among children with bronchopulmonary dysplasia. METHOD: Pulmonary function tests and gas analyses were performed in a cardiopulmonary test on 46 children aged 7-10 years. Three groups were formed: children born prematurely with bronchopulmonary dysplasia (BPD; n= 13), children born prematurely without bronchopulmonary dysplasia (Preterm; n= 13) and healthy children born at full term (Control; n= 20). RESULTS: The test duration was 7.70 ± 1.49; 9.1 ± 2.02 and 8.4 ± 2.12 min; VO2max was 35.98 ± 5.33; 38.99 ± 6.73 and 34.91 ± 6.09 ml/kg/min; and VE was 28.54 ± 7.39; 28.84 ± 5.98 and 28.96 ± 6.96 l/min for the BPD, Preterm and Control groups respectively. There were no significant differences between the groups (p> 0.05). The maximum heart rate was 188 ± 9.37; 196 ± 5.15 and 197 ± 10.90 beats/min and the respiratory exchange ratio (RER) was 1.21 ± 0.22; 1.10 ± 0.06 and 1.05 ± 0.05, for the BPD, Preterm and Control groups respectively, and there was a significant difference between the BPD and Control groups (p< 0.05). The FEV1 values before and after exercise were 99 ± 12% and 94 ± 14%; 100 ± 14% and 100 ± 15%; and 102 ± 15% and 101 ± 15%, for the BPD, Preterm and Control groups respectively. Comparison of FEV1 before and after exercise did not show any significant differences and exercise-induced bronchospasm was not characterized, in any of the groups. CONCLUSION: The difference in RER may be related to abnormal ventilation and pulmonary diffusion. The cardiorespiratory capacity of children with BPD was similar to that of the Preterm and Control groups.