Anatomometric Changes of Thorax After Pneumonectomy in Early Postoperative Period

Abstract

The aim of the study was to analyze changes in chest anatomical parameters of 17 patients after pneumonectomy in the early postoperative period. Materials and methods. The analysis of axial computer tomograms of 17 patients operated on for lung cancer, before pneumonectomy and on the 8-12th day after operation was carried out. Mean age of patients was 56±1.9 years. The transverse, antero-posterior dimensions of the thorax and the degree of retraction of the thoracic wall on the side of the operatiion were analyzed, and the angle of III and VII ribs’ lateral segments inclination was estimated on the sagittal slices. The received data were processed using the «Statistica 6». For each quantitative parameter, the mean value (X) and the standard error of the mean (S) were determined. Differences between the indices in the dependent groups were assessed using the sign test and the Wilcoxon watched pair test, in independent groups - the Mann-Whithey test. Statistically significant differences were considered for p <0.05. Results. The dynamics of changes in transverse, antero-posterior dimensions of the operated hemithorax, the grade of retraction of the anterior-lateral wall of the thorax, the angle of inclination of the lateral segments of the ribs are reflected. It is noted that on the 10th day after the operation there are changes in the anatomcal parameters of the thorax. Conclusions. Changes in the thorax after pneumonectomy consist of a decrease in its transverse and antero-posterior dimensions, as well as flattening of the anterior-lateral wall of the chest on the side of the operation and more pronounced on the right.