Prediction equations for spirometry in four‐ to six‐year‐old children
详细信息    查看全文
文摘
To generate prediction equations for spirometry in 4‐ to 6‐year‐old children.

sSec_2">Methods

spar0010">Forced vital capacity, forced expiratory volume in 0.5 s, forced expiratory volume in one second, peak expiratory flow, and forced expiratory flow at 25&ndash;75% of the forced vital capacity were assessed in 195 healthy children residing in the town of Sete Lagoas, state of Minas Gerais, Southeastern Brazil. The least mean squares method was used to derive the prediction equations. The level of significance was established as p < 0.05.

sSec_3">Results

spar0015">Overall, 85% of the children succeeded in performing the spirometric maneuvers. In the prediction equation, height was the single predictor of the spirometric variables as follows: forced vital capacity = exponential [(&minus;2.255) + (0.022 &times; height)], forced expiratory volume in 0.5 s = exponential [(&minus;2.288) + (0.019 &times; height)], forced expiratory volume in one second = exponential [(&minus;2.767) + (0.026 &times; height)], peak expiratory flow = exponential [(&minus;2.908) + (0.019 &times; height)], and forced expiratory flow at 25&ndash;75% of the forced vital capacity = exponential [(&minus;1.404) + (0.016 &times; height)]. Neither age nor weight influenced the regression equations. No significant differences in the predicted values for boys and girls were observed.

sSec_4">Conclusion

spar0020">The predicted values obtained in the present study are comparable to those reported for preschoolers from both Brazil and other countries.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700