| 1 | Critical analysis of feeding jejunostomy following resection of upper gastrointestinal malignancies显示文摘AIM To assess nutritional recovery,particularly regarding feeding jejunostomy tube(FJT)utilization,following upper gastrointestinal resection for malignancy. METHODS A retrospective review was performed of a prospectively-maintained database of adult patients who underwent esophagectomy or gastrectomy(subtotal or total)for cancer with curative intent,from January 2001 to June 2014. Patient demographics,the approach to esophagectomy,the extent of gastrectomy,FJT placement and utilization at discharge,administration of parenteral nutrition(PN),and complications were evaluated. All patients were followed for at least ninety days or until death.RESULTS The 287 patients underwent upper GI resection,comprised of 182 esophagectomy(n=107 transhiatal,58.7%; n=56 Ivor-Lewis,30.7%)and 105 gastrectomy [n=63 subtotal(SG),60.0%; n=42 total(TG),40.0%]. 181 of 182 esophagectomy patients underwent FJT,compared with 47 of 105 gastrectomy patients(99.5% vs 44.8%,P < 0.0001),of whom most had undergone TG(n=39,92.9% vs n=8 SG,12.9%,P < 0.0001). Median length of stay was similar between esophagectomy and gastrectomy groups(14.7 d vs 17.1 d,P=0.076). Upon discharge,87 esophagectomy patients(48.1%)were taking enteral feeds,with 53(29.3%)fully and 34(18.8%)partially dependent. Meanwhile,20 of 39 TG patients(51.3%)were either fully(n=3,7.7%)or partially(n=17,43.6%)dependent on tube feeds,compared with 5 of 8 SG patients(10.6%),all of whom were partially dependent. Gastrectomy patients were significantly less likely to be fully dependent on tube feeds at discharge compared to esophagectomy patients(6.4% vs 29.3%,P=0.0006). PN was administered despite FJT placement more often following gastrectomy than esophagectomy(n=11,23.4% vs n=7,3.9%,P=0.0001). FJT-specific complications requiring reoperation within 30 d of resection occurred more commonly in the gastrectomy group(n=6),all after TG,compared to 1 esophagectomy patient(12.8% vs 0.6%,P=0.0003). Six of 7 patients(85.7%)who experienced tube-related complications required PN.CONCLUSION Nutritional recovery following esophagectomy and gastrectomy is distinct. Operations are associated with unique complication profiles. Nutritional supplementation alternative to jejunostomy should be considered in particular scenarios. | Andrew M Blakely Saad Ajmal Rachel E Sargent Thomas T Ng Thomas J Miner | 2017 | World Journal of Gastrointestinal Surgery2017，9，2： | 4 |
| 2 | Theoretical evaluation of dielectric materials for lightning energy harvesting system显示文摘This study describes the hypothetical approach to system design to collect and store electrical energy present in a flash of lightning.The system’s operations include the attraction and handling of the electrical charge obtained from lightning flashes.Performance differences arise from three different dielectric materials(rutile,mica and quartz)and the results define the estimated response of the storage system,including charge storage.All the results in this article were obtained through simulation or demonstrated mathematically showing the estimated outcomes of the system.The findings demonstrate that each dielectric material has its own advantages and disadvantages that influence the efficiency of the storage system.Through analysing the distinction of the three materials,it is observed that mica is the most suitable dielectric material,as it has the greatest dielectric strength,which is the main factor in the handling of charge. | Saad Uddina Jinan Gua Muhammad Ajmal | 2022 | Clean Energy2022，6，6： | 0 |
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