Objective To observe the clinical efficacy and safety of hydrotalcite tablets combined with esomeprazole magnesium enteric-coated tablets in the treatment of active gastric ulcer with Helicobacter pylori (Hp) infection.Methods A total of 87 cases of active gastric ulcer with Hp infection were randomly divided into control group (n =44 cases) and treatment group (n =43 cases).Control group was treated with esomeprazole enteric coated tablet 20 mg,qd,orally.Treatment group was given hydrotalcite tablets 1 g each time,tid,orally.The two groups were treated for 4 weeks.The clinical efficacy,Hp eradication rate,healing quality and adverse drug reactions were compared between two groups.Results After treatment,the total effective rates of treatment and control groups were 90.70％ (39/43 cases) and 88.64％ (39/44 cases),the eradication rates of Hp were 81.40％ (35/43 cases) and 77.27％ (34/44 cases),there were no significant differences (all P ＞ 0.05).After treatment,the healing quality of treatment group and control group (grade) were 65.12％ (28/43 cases) and 40.91％ (18/44 cases) with significant difference (P ＜ 0.05).The adverse drug reactions in the treatment group were based on anorexia,dizziness and nausea,which in control group were based on lack of appetite and nausea.The incidences of adverse drug reactions in treatment and control groups were 13.95 ％ and 11.36％ without significant difference (P ＞ 0.05).Conclusion There were the same clinical efficacy and safety in the treatment of active gastric ulcer with Hp infection between hydrotalcite tablet combined with esomeprazole enteric coated tablet and single use of esomeprazole magnesium enteric-coated tablet,but the former can significantly improve the quality of ulcer healing.

Objective:To systematically review the relevant researches on aspiration screening tools for stroke patients. Methods:Literatures aboute stroke aspiration screening tools till December, 2018 were recalled from PubMed, Cochrane Library, Web of Science, EMbase, CNKI, Wanfang Database and China Biomedical Literature Database. Two researchers independently screened the literatures and extracted the basic information, such as the content, screening format, scoring standard and measurement characteristics. Results:A total of 25 studies were included, involving ten aspiration screening tools. The content, screening format, scoring standard and measurement characteristics of the aspiration screening tools were analysed. There was no evidence to support the tools. Conclusion:Tools would be selected according to the patient's condition, age and swallowing related characteristics.

A derivatizaton method combined with gas chromatography-mass spectrometry(GC-MS)was established for detection of isobutyl chloroformate(IBCF)residue in active pharmaceutical ingredient of agatroban.The extraction and derivatization reagents,derivatization time,qualitative and quantitative ions were selected and optimized,respectively.The possible mechanism of derivatization and characteristic fragment ions fragmentation were speculated.The agatroban samples were dissolved and extracted by methanol,and the residual IBCF was derived with methanol to generate methyl isobutyl carbonate(MIBCB).After 24 h static derivatization at room temperature,IBCF was completely transformed into MIBCB,which could be used to indirectly detect IBCF accurately.The results showed that the linearity of this method was good in the range of 25-500 ng/mL(R2=0.9999).The limit of detection(LOD,S/N=3)was 0.75 μg/g,and the limit of quantification(LOQ,S/N=10)was 2.50 μg/g.Good recoveries(95.2%-97.8%)and relative standard deviations(RSDs)less than 3.1%(n=6)were obtained from agatroban samples at three spiked levels of IBCF(2.50,25.00,50.00 μg/g),which showed good accuracy of this method.Good precision of detection results was obtained by different laboratory technicians at different times,the mean value of spiked sample solution(25.00 μg/g)was 24.28 μg/g,and the RSD was 2.1%(n=12).The durability was good,minor changes of detection conditions had little effect on the results.Under the original condition and conditions with initial column temperature±5℃,heating rate±2℃/min,column flow rate±0.1 mL/min,the IBCF content of spiked sample solution(25.00 μg/g)was detected,the mean value of detection results was 24.16 μg/g,and the RSD was 2.2%(n=7).Eight batches of agatroban samples from two manufacturers were detected using the established method,and the results showed that no IBCF residue was detected in any of these samples.The agatroban samples could be dissolved by methanol,and then the IBCF residue could be simultaneously extracted and derived with methanol as well.This detection method had the advantages of simple operation,high sensitivity,low matrix effect and accurate quantification,which provided a new effective method for detection of IBCF residue in agatroban.