Pulmonary Function Before Surgery for Pectus Excavatum and at Long-term Follow-up: Conclusion

Pulmonary Function Before Surgery for Pectus Excavatum and at Long-term Follow-up: ConclusionA potential criticism on the present retrospective study is the great variation in time between surgery and the follow-up pulmonary function tests (2.7 to 17.9 years). However, as we found no significant relation between the preoperative lung volumes and age and no significant relation between postoperative change in lung volumes and the follow-up interval, it is likely that the increased restriction of pulmonary function was due to the operation newmycanadianpharmacy.com my canadian pharmacy. The reduction in lung function at follow-up was found to be most pronounced in the patients who had the least functional impairment preoperatively. Therefore functional improvement after surgery may be expected in patients with preoperative lung function values of less than 75 percent predicted; this was supported by our findings. We also found that increased restriction of lung function at follow-up was not correlated with age at surgery, the preoperative anteroposterior diameter of the chest, or the change in diameter at follow-up.
The FEVi was found to be significantly different from the predicted values, although there was no significant difference when expressed as a ratio of the IVC. None of the previous studies were able to show an obstructive ventilatory defect in patients with pectus excavatum on the basis of the FEVi, the “Tiffenau test,” or timed IVC measurements.’’ If an obstructive ventilatory defect was present, we found it to be associated with one or more pulmonary complaints.
The change in the RV at follow-up as well as the RV/TLC ratio was significant, which indicated that the decrease in the TLC was due to both a decrease in the IVC and the RV. The subjective physical improvement in most patients’ is difficult to explain. Despite a significant increase in the anteroposterior diameter of the chest, the lung volumes showed a definite decrease at follow-up.

This entry was posted in Pulmonary Function and tagged anteroposterior, cardiorespiratory, lung volumes, pulmonary function.