Limited data can be found in the literature on leaks after LSG. A new algorithm based on leak size permits standardization of endoscopic management and reduces procedures after LSG.

No abstract

Perforated peptic ulcer (PPU), despite antiulcer medication and Helicobacter eradication, is still the most common indication for emergency gastric surgery associated with high morbidity and mortality. Perforated peptic ulcer is a common abdominal disease that is treated by surgery. The development of laparoscopic surgery has changed the way to treat such abdominal surgical emergencies but there is no consensus on whether the benefits of laparoscopic closure of perforated peptic ulcer outweigh the disadvantages such as prolonged surgery time and greater expense. However we can say that laparoscopic repair is a viable and safe surgical option for patients with perforated peptic ulcer disease and should be considered with the necessary expertise available.

By assimilating biological systems, both structural and functional, into multifractal objects, their behavior can be described in the framework of the scale relativity theory, in any of its forms (standard form in Nottale’s sense and/or the form of the multifractal theory of motion). By operating in the context of the multifractal theory of motion, based on multifractalization through non-Markovian stochastic processes, the main results of Nottale’s theory can be generalized (specific momentum conservation laws, both at differentiable and non-differentiable resolution scales, specific momentum conservation law associated with the differentiable–non-differentiable scale transition, etc.). In such a context, all results are explicated through analyzing biological processes, such as acute arterial occlusions as scale transitions. Thus, we show through a biophysical multifractal model that the blocking of the lumen of a healthy artery can happen as a result of the “stopping effect” associated with the differentiable-non-differentiable scale transition. We consider that blood entities move on continuous but non-differentiable (multifractal) curves. We determine the biophysical parameters that characterize the blood flow as a Bingham-type rheological fluid through a normal arterial structure assimilated with a horizontal “pipe” with circular symmetry. Our model has been validated based on experimental clinical data.

In order to diminish the climat changes due to greenhouse gases, the capture from the source, transport and storage of carbon dioxide is one of the environmental priorities of the EU until 2050. Transportation of this gas through pipelines (one of the solutions with most advantages in transport) can be done at ambient temperature only at high pressures, so the carbon dioxide to remain in the supercritical state. In case of underground pipelines, there is a risk of cracking at the wall of the pipe, with the release into the atmosphere of a large quantity of gas. The authors demonstrate the existence of a threshold at which the properties of the material change from ductile to brittle properties due to depressurization of the pipe, which has the effect of a rapid drop of the temperature in the crack. This paper presents the factors influencing the ductile-brittle transformation and the factors influencing this transition. Changing to brittle proprieties into the material of the pipe, leads to a rapid increase of the hole through which the CO 2 leaks. As these pipes are part of a vast network, the amount of carbon dioxide released into the atmosphere can be considerable, affecting the neighboring ecosystem, contributing to the local change of temperature regime and to global warming, by the high concentration of CO 2 in a large area.