Portal vein arterialization (PVA) is an acquired concept in shunt surgery for portal hypertension. This technique, recently described as both a temporary and permanent procedure in adult liver ...transplantation, is reported by the authors in two cases of pediatric transplantation. The indication was low portal blood flow after reperfusion with poor graft function due to persistence of spontaneous retroperitoneal venous shunts. In both cases described, PVA allowed for satisfactory macroscopic liver reperfusion. The increase in portal blood flow from 150 to 500 ml/min in the second patient enabled the liver to be reperfused correctly and led to successful transplantation. The graft function in both cases improved in the 1st postoperative week, but thrombosis of the PVA occurred in the 1st patient 2 months after transplantation. Signs of hepatic hyperarterialization occurred in the second patient and this necessitated a dearterialization of the portal vein 2 weeks later. Although the benefit of this procedure appears to be beyond doubt in the immediate postoperative period, we have no data on long‐term arterialization. We do think that PVA can be performed in pediatric liver transplantation, but it may need to be done only in special, individual situations when no valid alternative can be proposed, such as in the absence of a mesenteric vein and/or the presence of spontaneous retroperitoneal venous shunts.
Full text
Available for:
BFBNIB, FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SAZU, SBCE, SBMB, UL, UM, UPUK
Novel 2,3,9,10,16,17,23,24-octakis(3,3-dimethyl-1-butoxycarbonyl) phthalocyaninato copper(II) thin films were prepared by the Langmuir-Blodgett technique. Unlike for the symmetrical tetrasubstituted ...analogue, polarized light UV-visible measurements do not show inplane anisotropy of the orientation of molecules in the films. Transmission electron microscopy methods were applied in order to investigate the morphology and the structure of the deposited films. Dynamic response characteristics of the electrical conductance to 250 ppm NH
3 in dry air are presented. The sensitivity as a function of temperature was analysed.
Full text
Available for:
GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
The paper describes the results obtained from a research activity aimed to realise very-low-cost wireless transmitters for the realisation of high capacity point-to-point radio-links over huge ...distances. The transmitters were obtained from recycled PC hardware components and low- cost radio boards for IEEE 802.11a and IEEE 802.11 h applications. The manufactured hardware was used to implement a topology network made of links ranging from 100 to 300 kms. Performance analyses were run for about six months, showing extraordinary stability and reliability and excellent data transport performance..
Reports on a nonexperimentally induced case of infant abuse by a 6-yr-old Japanese macaque mother. The mother was born and reared in the wild and was living in a stable social group at the time of ...delivery--unlike the conditions in most previous reports. There were unusual findings from the quantitative study of the maternal behavior outside of the abuse (e.g., the mother-infant pair did not show a consistent decrease in the amount of contact from week to week). (18 ref)
