Spirometric functions before and after surgical correction

 TLC (% of pred)RV (% of pred)VC (% of pred)FRC (% of pred)
Before91.8%± 3.9%155.3% ± 12.3%72.9% ±4.6%119.7% ±10.2%
After60.5% ±7.9%123.8% ±19.8%56.1% ±7.4%76.8% ±9.8%