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The article discusses the challenges and strategies for preventing pressure injuries in the operating room. Pressure injuries, also known as pressure ulcers or bedsores, are a significant concern in surgical settings due to their association with increased morbidity, longer hospital stays, and higher healthcare costs. Risk factors for developing pressure injuries during surgery include patient-related factors, surgical factors, and environmental factors. The knowledge and practices of healthcare professionals, as well as organizational and systemic challenges, also play a role in preventing pressure injuries. The article suggests a comprehensive approach that includes risk assessment, the use of support surfaces and positioning techniques, education and training, and a multidisciplinary approach and collaboration among healthcare professionals. By implementing these strategies, healthcare facilities can significantly reduce the incidence of pressure injuries and improve patient outcomes. Continued research and innovation in this field are necessary to further enhance prevention efforts and the quality of care provided to surgical patients. [Extracted from the article]

The paper considered to extract, isolate and identify alkaloids in Leonurus heterophyllus. The total alkaloids in Leonurus heterophyllus was extracted by 1% boiling hydrochloric acid solution. After alcohol precipitation, acid precipitation was caaried out. Then the concentrate of alkaloids from Leonurus heterophyllus was further isolated and purified by means of 732 cation exchange resin. This thesis identified alkaloids in Leonurus heterophyllus initially by means of precipitation of alkaloids, thin layer chromatography and UV spectral scanning in three solvents, which were 70% ethanol, 0.5% hydrochloric acid methanol, and methanol. The alkaloids in Leonurus heterophyllus was eluted by the 5% ammonia and 70% ethanol, respectively, then was dried. The two dried alkaloids were expanded on the silica gel thin-layer board, whose situations were basicaaly the same, and their UV spectrum disolved in the three solvents was also consistent. The two alkaloids eluted with 5% ammonia and 70% ethanol might be derived from the same ingredients and contain the same substance. [ABSTRACT FROM AUTHOR]