45 resultados para Gallbladder stones
em QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast
Resumo:
This article discusses the rule that criminal liability does not normally attach for the causing of emotional harm or mental distress in the absence of proof of a 'recognised psychiatric injury'. It considers what is involved in the diagnosis of psychiatric injury, and to what extent the difference between such injury and 'ordinary' mental distress is one of degree rather than one of kind. It reviews the situations in which the law already criminalises the infliction of emotional harm without proof of psychiatric injury, and assesses the policy arguments for drawing the distinction in the normal case. The article concludes that the law can and should adopt a more flexible approach to cases of this sort.
Resumo:
Routine intravenous cholangiography using the safer contrast medium, meglumine iotroxate, may be a useful investigation prior to laparoscopic cholecystectomy for the detection of suspected common bile duct stones. We compared this with endoscopic cholangiography.
Resumo:
It has been proposed that duodenogastric reflux may be the basic underlying mechanism which gives rise to symptoms of flatulent dyspepsia. Fasting and postprandial gastric juice bile acid concentrations were measured in patients with flatulent dyspepsia with and without gall bladder disease and postcholecystectomy. There were 13 patients with gall bladder disease, 12 with normal gall bladders and 13 postcholecystectomy. Gastric juice was obtained by intubation. Bile acid concentrations were compared with 21 controls and 15 asymptomatic subjects with gall bladder disease. For 21 patients with gall bladder disease who underwent cholecystectomy, levels were again assessed postoperatively to allow correlation with outcome. The occurrence of reflux and the resultant gastric juice bile acids did not correlate with symptoms. Concentrations postcholecystectomy, including asymptomatic subjects were significantly higher than controls (p less than 0.01). It is concluded that limited duodenogastric reflux is common and need not be associated with symptoms even when the resultant intra-gastric concentrations are higher than normal.
Resumo:
It has been suggested that the symptoms of flatulent dyspepsia are caused by a functional disturbance of the upper gastrointestinal tract. The aim of this study was to investigate delayed gastric emptying as the basis of symptoms in patients with and without gallbladder disease and after cholecystectomy. There were 13 dyspeptic patients with gallbladder disease, 12 with normal gallbladders, and 13 post-cholecystectomy patients. Gastric emptying was measured by means of a 99mTc-labelled scrambled egg meal and external scintillation counter. The rate of emptying in the symptomatic groups was compared with that in 24 asymptomatic normal control subjects and 12 non-dyspeptic patients with gallbladder disease. Delayed gastric emptying tended to occur in patients with gallbladder disease with and without dyspepsia and was not specifically associated with symptoms.
Resumo:
Fasting and post-prandial circulating levels of insulin, gastrin, gastric inhibitory polypeptide, pancreatic polypeptide and neurotensin were measured in patients with flatulent dyspepsia, with and without gallbladder disease and post-cholecystectomy. Levels were also measured in non-dyspeptic patients with gallbladder disease and normal controls. There were no consistent significant differences from controls for fasting and post-prandial responses in patients with a history of dyspepsia or those who experienced dyspepsia at the time of the test. In patients with gallbladder disease, with and without dyspepsia, there was a reduced neurotensin response compared to normal controls. It is concluded that circulating levels of these hormones are not related to symptoms of flatulent dyspepsia.
Resumo:
Weathering of stone is one of the major reasons for the damage of stone masonry structures and it takes place due to interlinked chemical, physical and biological processes in stones. The key parameters involved in the deterioration processes are temperature, moisture and salt. It is now known that the sudden variations in temperature and moisture greatly accelerate the weathering process of the building stone fabric. Therefore, in order to monitor these sudden variations an effective and continuous monitoring system is needed. Furthermore, it must consist of robust sensors which are accurate and can survive in the harsh environments experienced in and around masonry structures. Although salt penetration is important for the rate of deterioration of stone masonry structures, the processes involved are much slower than the damage associated with temperature and moisture variations. Therefore, in this paper a novel fibre optic temperature cum relative humidity sensor is described and its applicability in monitoring building stones demonstrated. The performance of the sensor is assessed in an experiment comprising wetting and drying of limestone blocks. The results indicate that the novel fibre optic relative humidity sensor which is tailor made for applications in masonry structures performed well in wetting and drying tests, whilst commercial capacitance based sensors failed to recover during the drying regime for a long period after a wetting regime. That is, the fibre optic sensor has the capability to measure both sorption and de-sorption characteristics of stone blocks. This sensor is used in a test wall in Oxford and the data thus obtained strengthened the laboratory observations.
Hygrothermal Features of Laterite Dimension Stones for Sub-Saharan Residential Building Construction
Resumo:
The building sector is widely recognized as having a major impact on sustainable development. Both in developed and developing countries, sustainability in buildings approaches are growing. Laterite dimension stone (LDS) is a building material that was traditionally used in sub-Saharan Africa, but its technical features still need to be assessed. This article presents some results of a study focused on the characterization of LDS exploited in Burkina Faso for building purposes. The measured average thermal conductivity is 0.51 W/mK, which increases with water content and evolves with the specific gravity and with porosity. Rock mineral phases (quartz, goethite, hematite, magnetite) are cemented by kaolinite. The porosity of the material is high (30%), with macropores visible on the surface and found in the rock inner structure as well. Results from the hygrothermal monitoring of a pilot building are also presented.