Laparoscopic Appendectomy in Children with Perforated Appendicitis

Abstract

Purpose:It is controversial to do laparoscopic appendectomy in children with perforated appendicitis. Recently, we have adopted laparoscopic appendectomy as a first-choice method in children with perforated appendicitis. Results: The operation times were significantly longer for the LA group than for the OA group (OA group 76.3±23.7 vs. LA group 95.4±32.4 min) (P＜0.05). The hospital days were also longer in the LA group than the OA group (OA group 8.7±4.4 vs. LA group 11.0±6.3 (days)). However, there was no difference in time to diet (OA group: 5.0±3.3 vs. LA group: 5.4±2.9 (days)) (P＞0.05) and in the rate of complications (OA group: 36/117 vs. LA group: 13/45) (P＞0.05) between the two groups. The incidence of postoperative ileus, intraabdominal abscess and wound infection was lower in LA group, but not significantly. Conclusion: Operation times and hospital days were longer in the LA group. But the incidence of complication was similar between the two groups. Considering little postoperative scar and less pain, laparoscopic appendectomy could be regarded as the optimal surgical therapy in children with perforated appendicitis. (J Korean Surg Soc 2009;76:47-51)

The effects of the guide field and tapered wiggler in free-electron laser

“…This instability of electron beam is undesirable because it limits not only the spectral purity of the electromagnetic field but also the efficiency of the conversion of the electron energy into electromagnetic energy. It has been shown that the use of tapered wigglers offer a way to avoid these problems and the efficiency can be considerably increased by optimizing the tapering [7][8][9].…”