Ultrasonic study on the evaluation of regional right ventricular function by strain rate imaging after surgical repair of conotruncal defects / 中华超声影像学杂志

Objective To evaluate regional right ventricular function by ultrasonic strain rate imaging in postoperative children with conotruncal defects(CTD). Methods All 27 postoperative CTD children had magnetic resonance imaging evaluation of right ventricular end-diastolic volume and end-systolic volume to calculate right ventricular ejection fraction (RVEF). The ultrasonic parameters of peak systolic strain rate (SRs), peak early diastolic strain rate (SRe), peak late diastolic strain rate(SRa) and strain (S) were obtained at the basal,middle and apical segment in curve of right ventricular anterior wall in 27 postoperative CTD children and 27 normal children. The correlation between SRs,S and RVEF were evaluated. Results Compared with healthy children,SRs,S,SRe,SRa were significantly reduced in postoperative CTD children (P ＜ 0.01 ), there were different distribution rules between postoperative CTD children and normal children,and all indexes had no statistical descrepancy among the basal, middle and apical segment ( P ＞0.05). SRs in basal segment of the right ventricular anterior wall correlated well with RVEF ( r = 0.89,P ＜ 0. 01 ). Conclusions Regional right ventricular function still was reduced in postoperative CTD children, and could be accurately evaluated by ultrasonic strain rate imaging.

Laparoscopy-assisted radical pull-out operation for Hirschsprung disease:a report of 12 cases / 中国普通外科杂志

Objective To explore the effect of Laparoscopy-assisted radical pull-out operation for Hirschsprung disease.Methods The clinical data of 12 patients with Hirschsprung disease admitted to our hospital in the last 2 years were retrospectively reviewed.Results The surgical procedures of 12 cases were successfully performed by laparoscopy,including 6 cases of common segment,4 cases of short segment,and 2 cases of long segment type.All the operations were completed with laparoscopy in 80-130 min(mean 100 min).There was very little bleeding during the procedure and no obvious scar.There were no complications.Conclusions Laparoscopy-assisted radical pull-out operation for Hirschsprung disease is feasible and effective.