To study the influence of the minimal invasive Nuss procedure on the pulmonary function of postoperative pectus excavatum patients.

Conduct retrospective analysis on the data from 676 pectus excavatum patients who were treated by the minimal invasive Nuss procedure from August 2006 to November 2014. Wherein 182 cases have complete preoperative and postoperative pulmonary-function data of one year, three years. These cases were divided into 3 groups according to the age, namely, children group(from 6 to 12 years old, 34 cases), adolescents group(from 13 to 18 years old, 80 cases), adults group(above 18 years old, 68 cases), among which there were 71 cases with pulmonary function data of 1 year after removal of steel plate, they were divided into 3 groups in the same way, namely, children group(20 cases), adolescents group(22 cases), adults group(29 cases) .To compare and analyze the pulmonary function indicatrix of patients with different ages in preoperative stage, 1 year, 3 years postoperative stages and 1 year after dismantling the steel plate stage, and to investigate the influence of the minimal invasive Nuss procedure on the postoperative lung function.

The pulmonary function indicatrix in preoperative stage, 1 year, 3 years postoperative stages of the children group did not have significant difference(P>0.05); the FVC, FEV1 indicatrix of adolescents and adults groups declined after operation in 1 year and 3 years compared with the preoperative stage(P<0.05), FEF 25%-75%, FEF 50%, FEF75% were improved after operation in 1 year and 3 years compared with the preoperative stage(P<0.05); the pulmonary function indicatrix of three age groups in the 1 year after dismantling the steel plate stage had all improved, in which the pulmonary function indicatrix of the children group improves most significantly(P<0.05).

After the minimal invasive Nuss procedure before the plate dismantling process, the pulmonary function of children patients remains to be similar. Partial ventilatory function was damaged in the adolescents and adults patients. After the plate dismantling process, the pulmonary function indicatrix of each age group has improved in different degrees. Improvement effect is the most significant in patients below the age of 12.

Pectus excavatum; Minimal invasive nuss procedure; Pulmonary function