Background
Local steroid hormone injections into hypertrophic scars resulted in depression of the lesion site and radiated linear depigmentation and atrophy surrounding the lesion, which is extremely rare. We reported a case.
Aim
Our report was designed to explore the causes of this adverse reaction.
Method
We reported a case of strange adverse reactions after steroid hormone injection for hyperplastic scars: depression of the lesion and linear‐like depigmentation and atrophy of the skin around the lesion, which did not improve after 1 year of topical drug treatment.
Results
We considered that the injection was too deep. Steroid crystals are deposited in normal skin tissue and absorbed by the lymphatic vessel network responsible for removing macromolecules in the interstitial tissue, resulting in linear discoloration and atrophy along the lymphatic vessels.
Conclusion
When treating hyperplastic scarring, the doctor needs to strictly grasp the depth, level, and dosage of the injection and avoid such adverse reactions.
The construction process of project group is full of uncertain factors, large numbers of resources are required, and it is easy to lack of certain resources. Based on programming theory, the project group resource reallocation optimization model is established when supplied resource quantities are insufficient. By applying programming theory, a linear programming model including labor, material resource reallocation is established, it regards the shortest delaying construction period and minimum extra increased cost as the objective function. It guarantees the rational reallocation of resources. Through actual example analysis, how to optimize the configuration of the actual project group when the situation in which insufficient resources supply occurs is vadilated.
In this study, numerical simulation of XCP probe was executed. The 3D Navier-Stokes equations were used as governing equations, and the finite volume method combining two-equations turbulence model was applied. The flow field of XCP Probe was analyzed, especially around the XCP Probe's head. The results show that the arc design of the XCP Probe's head plays an important role on the steady falling speed. In addition, when the radian is 27°, the resistance of the probe is smallest and a larger falling speed can be achieved; The electrodes of probe should be located in front end of a conduit which is in the middle of the probe.
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