BACKGROUND Although en bloc dissection of hepatic hilum lymph nodes has many advantages in radical tumor treatment,the feasibility and safety of this approach for laparo-scopic pancreaticoduodenectomy(LPD)require furt...BACKGROUND Although en bloc dissection of hepatic hilum lymph nodes has many advantages in radical tumor treatment,the feasibility and safety of this approach for laparo-scopic pancreaticoduodenectomy(LPD)require further clinical evaluation and investigation.AIM To explore the application value of the"five steps four quadrants"modularized en bloc dissection technique for accessing hepatic hilum lymph nodes in LPD patients.METHODS A total of 52 patients who underwent LPD via the"five steps four quadrants"modularized en bloc dissection technique for hepatic hilum lymph nodes from April 2021 to July 2023 in our department were analyzed retrospectively.The patients'body mass index(BMI),preoperative laboratory indices,intraoperative variables and postoperative complications were recorded.The relationships between preoperative data and intraoperative lymph node dissection time and blood loss were also analyzed.RESULTS Among the 52 patients,36 were males and 16 were females,and the average age was 62.2±11.0 years.There were 26 patients with pancreatic head cancer,16 patients with periampullary cancer,and 10 patients with distal bile duct cancer.The BMI was 22.3±3.3 kg/m²,and the median total bilirubin(TBIL)concentration was 57.7(16.0-155.7)µmol/L.All patients successfully underwent the"five steps four quadrants"modularized en bloc dissection technique without lymph node clearance-related complications such as postoperative bleeding or lymphatic leakage.Correlation analysis revealed significant associations between preoperative BMI(r=0.3581,P=0.0091),TBIL level(r=0.2988,P=0.0341),prothrombin time(r=0.3018,P=0.0297)and lymph node dissection time.Moreover,dissection time was significantly correlated with intraoperative blood loss(r=0.7744,P<0.0001).Further stratified analysis demonstrated that patients with a preoperative BMI≥21.9 kg/m²and a TIBL concentration≥57.7μmol/L had significantly longer lymph node dissection times(both P<0.05).CONCLUSION The"five steps four quadrants"modularized en bloc dissection technique for accessing the hepatic hilum lymph node is safe and feasible for LPD.This technique is expected to improve the efficiency of hepatic hilum lymph node dissection and shorten the learning curve;thus,it is worthy of further clinical promotion and application.展开更多
The solution we propose optimizes the energy inside the wireless sensor network (WSN) with higher performance. The WSN is composed of many sensors nodes which collect the information, treat that information then send ...The solution we propose optimizes the energy inside the wireless sensor network (WSN) with higher performance. The WSN is composed of many sensors nodes which collect the information, treat that information then send it to the base station. The information is received by the base station (BS) then data?are?sent to the users by that BS. The most important element in sensor node is energy, as the lifetime of wireless sensor network depends on the sensor node energy. So many researches had been made in order to improve this energy basing routing protocols. As a result, we are able to propose a solution that optimizes this energy. In this paper, we are presenting a new approach of selecting node sensor base on routing protocol and process to send data to the base station. This ameliorates wireless sensor network lifetime and increases?the transmission sensor node to base station.展开更多
目的：探讨整块与分块切除在腔镜辅助甲状腺微小乳头状癌手术中的应用效果。方法回顾性分析2013年2月～2014年2月北京安贞医院腔镜辅助手术中快速冰冻病理证实甲状腺微小乳头状癌患者62例资料，前24例先行患侧腺叶、峡部切除，继而在纳...目的：探讨整块与分块切除在腔镜辅助甲状腺微小乳头状癌手术中的应用效果。方法回顾性分析2013年2月～2014年2月北京安贞医院腔镜辅助手术中快速冰冻病理证实甲状腺微小乳头状癌患者62例资料，前24例先行患侧腺叶、峡部切除，继而在纳米碳示踪下行中央区淋巴结分块清扫（分块切除组），后38例将患侧腺叶、峡部、中央区淋巴脂肪组织连续整块切除一次完成（整块切除组）。对2组手术时间、术中出血量、中央区淋巴结清扫数量、术后并发症情况进行比较。结果2组手术均顺利完成，无中转开放手术。整块切除组较分块切除组手术时间长[（86．1±10．0）min vs ．（73．5±8．9） min，t＝4．997，P＝0．000]，2组术中出血量差异无显著性（P＞0．05），而中央区淋巴结清扫数量整块切除组明显多于分块切除组[（8．2±1．6）枚vs．（6．1±1．5）枚，t＝5．131，P＝0．000]。2组均无永久性喉返神经损伤及低钙血症。术后暂时性声音嘶哑整块切除组3例，分块切除组4例，总发生率为11．3％（7／62），2组间差异无显著性（χ2＝0．424，P＝0．515），未予特殊处理，均于术后8周内恢复正常。术后随访5～17个月，平均10个月，均无局部种植、复发和远处转移。结论整块切除较分块切除更符合无瘤原则，在腔镜辅助甲状腺微小乳头状癌手术中可以得到安全的应用。展开更多
基金Supported by Health Research Program of Anhui,No.AHWJ2022b032。
文摘BACKGROUND Although en bloc dissection of hepatic hilum lymph nodes has many advantages in radical tumor treatment,the feasibility and safety of this approach for laparo-scopic pancreaticoduodenectomy(LPD)require further clinical evaluation and investigation.AIM To explore the application value of the"five steps four quadrants"modularized en bloc dissection technique for accessing hepatic hilum lymph nodes in LPD patients.METHODS A total of 52 patients who underwent LPD via the"five steps four quadrants"modularized en bloc dissection technique for hepatic hilum lymph nodes from April 2021 to July 2023 in our department were analyzed retrospectively.The patients'body mass index(BMI),preoperative laboratory indices,intraoperative variables and postoperative complications were recorded.The relationships between preoperative data and intraoperative lymph node dissection time and blood loss were also analyzed.RESULTS Among the 52 patients,36 were males and 16 were females,and the average age was 62.2±11.0 years.There were 26 patients with pancreatic head cancer,16 patients with periampullary cancer,and 10 patients with distal bile duct cancer.The BMI was 22.3±3.3 kg/m²,and the median total bilirubin(TBIL)concentration was 57.7(16.0-155.7)µmol/L.All patients successfully underwent the"five steps four quadrants"modularized en bloc dissection technique without lymph node clearance-related complications such as postoperative bleeding or lymphatic leakage.Correlation analysis revealed significant associations between preoperative BMI(r=0.3581,P=0.0091),TBIL level(r=0.2988,P=0.0341),prothrombin time(r=0.3018,P=0.0297)and lymph node dissection time.Moreover,dissection time was significantly correlated with intraoperative blood loss(r=0.7744,P<0.0001).Further stratified analysis demonstrated that patients with a preoperative BMI≥21.9 kg/m²and a TIBL concentration≥57.7μmol/L had significantly longer lymph node dissection times(both P<0.05).CONCLUSION The"five steps four quadrants"modularized en bloc dissection technique for accessing the hepatic hilum lymph node is safe and feasible for LPD.This technique is expected to improve the efficiency of hepatic hilum lymph node dissection and shorten the learning curve;thus,it is worthy of further clinical promotion and application.
文摘The solution we propose optimizes the energy inside the wireless sensor network (WSN) with higher performance. The WSN is composed of many sensors nodes which collect the information, treat that information then send it to the base station. The information is received by the base station (BS) then data?are?sent to the users by that BS. The most important element in sensor node is energy, as the lifetime of wireless sensor network depends on the sensor node energy. So many researches had been made in order to improve this energy basing routing protocols. As a result, we are able to propose a solution that optimizes this energy. In this paper, we are presenting a new approach of selecting node sensor base on routing protocol and process to send data to the base station. This ameliorates wireless sensor network lifetime and increases?the transmission sensor node to base station.
文摘目的：探讨整块与分块切除在腔镜辅助甲状腺微小乳头状癌手术中的应用效果。方法回顾性分析2013年2月～2014年2月北京安贞医院腔镜辅助手术中快速冰冻病理证实甲状腺微小乳头状癌患者62例资料，前24例先行患侧腺叶、峡部切除，继而在纳米碳示踪下行中央区淋巴结分块清扫（分块切除组），后38例将患侧腺叶、峡部、中央区淋巴脂肪组织连续整块切除一次完成（整块切除组）。对2组手术时间、术中出血量、中央区淋巴结清扫数量、术后并发症情况进行比较。结果2组手术均顺利完成，无中转开放手术。整块切除组较分块切除组手术时间长[（86．1±10．0）min vs ．（73．5±8．9） min，t＝4．997，P＝0．000]，2组术中出血量差异无显著性（P＞0．05），而中央区淋巴结清扫数量整块切除组明显多于分块切除组[（8．2±1．6）枚vs．（6．1±1．5）枚，t＝5．131，P＝0．000]。2组均无永久性喉返神经损伤及低钙血症。术后暂时性声音嘶哑整块切除组3例，分块切除组4例，总发生率为11．3％（7／62），2组间差异无显著性（χ2＝0．424，P＝0．515），未予特殊处理，均于术后8周内恢复正常。术后随访5～17个月，平均10个月，均无局部种植、复发和远处转移。结论整块切除较分块切除更符合无瘤原则，在腔镜辅助甲状腺微小乳头状癌手术中可以得到安全的应用。
