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目的观察"一针法"连续缝合在胆肠吻合术中的应用效果。方法 214例接受胆肠吻合术患者,其中应用"一针法"连续缝合114例(观察组)、应用传统缝合100例(传统组),比较两组胆肠吻合时间并观察两组术后胆漏、胆系感染、胆肠吻合口出血、胆肠吻合口狭窄并发症发生情况。结果观察组、传统组胆肠吻合时间分别为(7.1±1.4)、(17.2±3.4)min,两组相比P<0.05。观察组术后发生胆漏1例、胆系感染1例、胆肠吻合口出血2例、胆肠吻合口狭窄0例,传统组分别为9、21、1、6例,两组胆漏、胆系感染、胆肠吻合口狭窄发生率比较P均<0.05。结论在胆肠吻合术中应用"一针法"连续缝合省时、并发症少。 [ABSTRACT FROM AUTHOR]

In order to solve trace-level steroid estrogen pollution in groundwater and surface water, a SPE-GC-MS approach to determine five steroid estrogens (SEs), E1, 17α-E2, 17β-E2, EE2 and E3, by optimizing of solid phase extraction (SPE), derivatization conditions and the secondary purification process of complex samples has been developed. The results show that Oasis HLB column, ethyl acetate elution and derivatizing at 40℃ for 20 min can achieve the best results for extraction. Moreover, the Generik NAX column activated by methyl is suitable for the secondary purification of complex samples. The linear ranges of E1, 17α-E2, and 17β-E2 are 5-1000 ng/L, whereas those of EE2 and E3 are 10-1000 ng/L. The detection and quantitation limits are 2-3 ng/L and 6.5-10 ng/L, respectively. The standard solution added recoveries of water samples range from 80% to 120%. The relative standard deviations of daily peak areas in the SEs determination range from 6.8% to 10%. This method was used to determine the SEs pollution levels of waters from pond, river, groundwater and sewage treatment plant effluent and results show that this detection technique can be effectively applied to the identification and evaluation of estrogen risk in surface water and groundwater samples.