Oxidative destruction of organic pollutants on modified polypropylene fiber

The paper shows the prospects of using composites based on polypropylene fiber with embedded particles of metal Fe{0} and Al{0}. Samples were used for oxidative destruction of organic compounds under conditions of the Fenton-like system and visible radiation

Vergleichende In-vitro-Testung von Kavafiltern

PURPOSE: In vitro evaluation of six established and two new IVC Filters in order to compare their capture rates.MATERIAL AND METHODS: Six established IVC Filters, the already in vitro tested Cook Celect Filter and a newly developed mesh Filter had to pass several tests in a flow model where they had to prove capture efficiency in vertical and horizontal positions as well as in concentric and eccentric centering. The study was divided into a single- and multi-clot test, where they were exposed to single or multi blood clots of different sizes (3x5, 3x10, 5x10, 5x20, 7x20, 10x24 mm). RESULTS: In the single-clot test the capture rate of the different filters increased significantly (p < 0.001) with increasing clot size. The filter position (horizontal, vertical) did not show any statistical significance (p = 0.3870, p = 0.2241) in either single or multi exposure. In contrast to the filter position, the filter centering (concentric, eccentric) had a statistically significant effect on the capture efficiency in multi exposure (p = 0.0149).CONCLUSION: There are remarkable differences between the tested IVC filters. The Cook Celect filter, the Günther tulip filter and the newly developed mesh filter reached the best results. With larger emboli the Vena Tech LP filter and the OptEase filter obtained equally good capture rates. The Anthéor filter, the Recovery filter and the Titanium Greenfield filter achieved substandard test-results

Vergleichende In-vitro-Testung von Kavafiltern

PURPOSE: In vitro evaluation of six established and two new IVC Filters in order to compare their capture rates.MATERIAL AND METHODS: Six established IVC Filters, the already in vitro tested Cook Celect Filter and a newly developed mesh Filter had to pass several tests in a flow model where they had to prove capture efficiency in vertical and horizontal positions as well as in concentric and eccentric centering. The study was divided into a single- and multi-clot test, where they were exposed to single or multi blood clots of different sizes (3x5, 3x10, 5x10, 5x20, 7x20, 10x24 mm). RESULTS: In the single-clot test the capture rate of the different filters increased significantly (p < 0.001) with increasing clot size. The filter position (horizontal, vertical) did not show any statistical significance (p = 0.3870, p = 0.2241) in either single or multi exposure. In contrast to the filter position, the filter centering (concentric, eccentric) had a statistically significant effect on the capture efficiency in multi exposure (p = 0.0149).CONCLUSION: There are remarkable differences between the tested IVC filters. The Cook Celect filter, the Günther tulip filter and the newly developed mesh filter reached the best results. With larger emboli the Vena Tech LP filter and the OptEase filter obtained equally good capture rates. The Anthéor filter, the Recovery filter and the Titanium Greenfield filter achieved substandard test-results

Bypass during Liver Transplantation: Anachronism or Revival? : Liver Transplantation Using a Combined Venovenous/Portal Venous Bypass ; Experiences with 163 Liver Transplants in a Newly Established Liver Transplantation Program

Introduction. The venovenous/portal venous (VVP) bypass technique has generally become obsolete in liver transplantation (LT) today. We evaluated our experience with 163 consecutive LTs that used a VVP bypass. Patients and Methods. The liver transplant program was started in our center in 2010. LTs were performed using an extracorporal bypass device. Results. Mean operative time was 269 minutes and warm ischemic time 43 minutes. The median number of transfusion of packed cells and plasma was 7 and 14. There was no intraoperative death, and the 30-day mortality was 3%. Severe bypass-induced complications did not occur. Discussion. The introduction of a new LT program requires maximum safety measures for all of the parties involved. Both surgical and anaesthesiological management (reperfusion) can be controlled very reliably using a VVP bypass device. Particularly when using marginal grafts, this approach helps to minimise both surgical and anaesthesiological complications in terms of less volume overload, less use of vasopressive drugs, less myocardial injury, and better peripheral blood circulation. Conclusion. Based on our experiences while establishing a new liver transplantation program, we advocate the reappraisal of the extracorporeal VVP bypass

Bypass during Liver Transplantation: Anachronism or Revival? Liver Transplantation Using a Combined Venovenous/Portal Venous Bypass-Experiences with 163 Liver Transplants in a Newly Established Liver Transplantation Program

Introduction. The venovenous/portal venous (VVP) bypass technique has generally become obsolete in liver transplantation (LT) today. We evaluated our experience with 163 consecutive LTs that used a VVP bypass. Patients and Methods. The liver transplant program was started in our center in 2010. LTs were performed using an extracorporal bypass device. Results. Mean operative time was 269 minutes and warm ischemic time 43 minutes. The median number of transfusion of packed cells and plasma was 7 and 14. There was no intraoperative death, and the 30-day mortality was 3%. Severe bypass-induced complications did not occur. Discussion. The introduction of a new LT program requires maximum safety measures for all of the parties involved. Both surgical and anaesthesiological management (reperfusion) can be controlled very reliably using a VVP bypass device. Particularly when using marginal grafts, this approach helps to minimise both surgical and anaesthesiological complications in terms of less volume overload, less use of vasopressive drugs, less myocardial injury, and better peripheral blood circulation. Conclusion. Based on our experiences while establishing a new liver transplantation program, we advocate the reappraisal of the extracorporeal VVP bypass