ICP-MS establishes blood lead reference method expected to improve detection accuracy / 中华检验医学杂志

Lead poisoning severely threatens human health with its cumulation and durability in the body. The analysis of lead in blood is vital for screening, diagnosis, treatment, and prognostication of lead poisoning and for indirectly monitoring the level of lead in the environment. Although the detection programs are available throughout our country, the accuracy and comparability of the results cannot meet the expectation. A variety of factors can affect the accuracy of blood lead testing. To promote the application of blood lead analysis in clinical trials and reduce the bias of results, a better reference system for blood lead analysis should be established to evaluate the accuracy of traditional methods, promote the standardization of blood lead analysis and achieve accurate blood lead testing.

Exploration and practice of undergraduate tutorial system in clinical medical colleges / 中华医学教育探索杂志

Objective:To explore the necessity and feasibility of undergraduate tutorial system in clinical medical colleges.Methods:A questionnaire survey on the scientific research situation was conducted among 64 students from the long-term class and the base class of the Fourth Clinical Medical College of Capital Medical University from September 2015 to February 2018. The undergraduate tutorial system was tested in two classes for one year. After that, the questionnaire survey was conducted again to compare it with the system before implementation and analyze the trial situation of the tutorial system.Results:During the practice of the undergraduate tutorial system, it was found that most of the students wanted to participate in scientific research and were guided by tutors to improve their scientific research capabilities, but at the same time, it was also discovered that tutors were busy with their work and were unable to give insufficient guidance to the students. In terms of medical papers writing, from September 2015 to February 2018, 20 students in the long-term class participating in the tutorial system wrote 23 papers in total, and 9 students in the base class totally wrote 9 papers, with a significant difference ( P<0.05). From September 2015 to February 2018, 9 students from the base class wrote 9 papers, and from March 2018 to March 2019, there were 18 students from the base class who totally wrote 27 papers, with a significant difference ( P<0.05). Conclusion:It's feasible and necessary to implement the undergraduate tutorial system in clinical medical colleges.