RÉSUMÉ
Objective@#To investigate the association between the family relationship of college students in Shanghai and the psychological stress response under the COVID-19 epidemic.@*Methods@#Totally 904 college students from universities in Shanghai were investigated with questionnaire of FACESII-CV and IES-R.@*Results@#The score of family relationship intimacy was(61.32±6.29), the score of family relationship adaptability was(43.30±5.83), the score of psychological stress was(30.77±7.33), the score of internal dimension，avoidance, high alertness were(11.63±2.53)(11.69±2.64)(7.45±2.33). About 77.5%(701) and 17.3%(156) of college students showed mild and moderate stress reactions. Three dimensional scores of psychological stress response and two dimensional scores of family relationship differed significantly by age, grade, family income and parental education(P<0.01). Moreover, family relationship intimacy and adaptability scores showed negative associations with intrusive symptoms, avoidance symptoms, and high alert symptom dimension scores(P<0.05).@*Conclusion@#College students showed mild psychological stress under the COVID 19 epidemic with intrusion and avoidance symptoms as the most common. The intimacy and adaptability of family relationships are negatively associated with psychological stress response of college students under the epidemic. High-quality family relationships can reduce the psychological impact and adverse effects of the new crown epidemic on college students.
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To ensure the safety of the commercially available chenpi, a convenient and fast analytical method was developed for the determination of 133 pesticide residues in chenpi using gas chromatography-tandem mass spectrometry (GC-MS/MS). In this study, different extraction solvents, redissolution solvents and adsorbents were tested according to the recovery and purification effect to obtain a modified QuEChERS method. The samples were extracted with acetonitrile. During the clean-up step, octadecyl-modified silica (C18) and graphitized carbon black (GCB) were selected, and aminopropyl (NH2) was used instead of primary secondary amine (PSA) because of its weaker ion exchange capacity which had little effect on the recovery of ditalimfos. Samples were quantified by matrix-matched calibration with internal stan-dards. All pesticides showed good linearity in the respective range, both with values of r2 >0.99. The average recoveries of the pesticides spiked samples ranged from 70.0％ to 112.2％ with the RSDs of 0.2％–14.4％. The modified QuEChERS method was validated and applied to twenty real samples. Five pesticides were found in eight batches, but no pesticide exceeded the maximum residue limits (MRL, MRL reference to European commission).
RÉSUMÉ
Objective To explore the clinical effect of percutaneous low frequency electric stimulation on prevention of venous indwelling needle thrombotic blockage in patients with coronary heart disease. Methods A total of 150 patients admitted to the department of cardiovascular medicine from May 2017 to January 2018 who met the inclusion and exclusion criteria were selected. It was divided into the intervention group and the control group by the random number table method, including 75 cases in the intervention group and 75 cases in the control group. In the control group, the routine nursing method was adopted for the maintenance of intravenous indwelling needle. In the intervention group, on the basis of routine nursing, the percutaneous low frequency electrical stimulation was added. The incidence of thrombosis, occlusion, mean retention time, patient satisfaction and intravenous infusion complications were compared between the two groups. Results The incidence of thrombosis was 40.0% (30/75) and 64.0% (48/75) in the intervention group and the control group, and the blockage rate was 28.0% (21/75) and 52.0% (39/75) in the intervention group and the control group, respectively. There were significant differences between the two groups (χ2=8.654, 9.000, all P< 0.01). The incidence of phlebitis, drug exosmosis and subcutaneous bruising were 13.33% (10/75), 13.33% (10/75) and 18.67% (14/75) in the intervention group, 33.33% (25/75), 40.00% (30/75) and 41.33% (31/75) in the control group, respectively. There were significant differences between the two groups (χ2=8.385, 13.636, 9.175, all P<0.01). The indwelling time and patient satisfaction of the intervention group were (2.817 ± 0.221) d and 82.67% (62/75) respectively, while those of the control group were (2.291±0.127) d and 50.67% (38/75), respectively. There were significant differences between the two groups (t=17.926, χ2=17.280, all P<0.01). Conclusions Percutaneous low frequency electrical stimulation has positive significance for improving the formation of thrombus at the point of intravenous indwelling needle and preventing the blockage of catheter caused by thrombosis.
RÉSUMÉ
Objective@#To explore the clinical effect of percutaneous low frequency electric stimulation on prevention of venous indwelling needle thrombotic blockage in patients with coronary heart disease.@*Methods@#A total of 150 patients admitted to the department of cardiovascular medicine from May 2017 to January 2018 who met the inclusion and exclusion criteria were selected. It was divided into the intervention group and the control group by the random number table method, including 75 cases in the intervention group and 75 cases in the control group. In the control group, the routine nursing method was adopted for the maintenance of intravenous indwelling needle. In the intervention group, on the basis of routine nursing, the percutaneous low frequency electrical stimulation was added. The incidence of thrombosis, occlusion, mean retention time, patient satisfaction and intravenous infusion complications were compared between the two groups.@*Results@#The incidence of thrombosis was 40.0% (30/75) and64.0% (48/75) in the intervention group and the control group, and the blockage rate was 28.0% (21/75) and 52.0% (39/75) in the intervention group and the control group, respectively. There were significant differences between the two groups (χ2=8.654, 9.000, all P< 0.01). The incidence of phlebitis, drug exosmosis and subcutaneous bruising were 13.33% (10/75), 13.33% (10/75) and 18.67% (14/75) in the intervention group, 33.33% (25/75), 40.00% (30/75) and 41.33% (31/75) in the control group, respectively. There were significant differences between the two groups (χ2 = 8.385, 13.636, 9.175, all P< 0.01). The indwelling time and patient satisfaction of the intervention group were (2.817±0.221) d and 82.67% (62/75) respectively, while those of the control group were (2.291±0.127) d and 50.67% (38/75), respectively. There were significant differences between the two groups (t=17.926, χ2=17.280, all P<0.01).@*Conclusions@#Percutaneous low frequency electrical stimulation has positive significance for improving the formation of thrombus at the point of intravenous indwelling needle and preventing the blockage of catheter caused by thrombosis.