OBJECTIVE:To establish the quality standard of Chailing hugan granules. METHODS:TLC was used for qualitative identification of Radix bupleuri,Atractylodes macrocephala and Glycyrrhiza uralensis. The content of total flavonoids (by rutin) in preparation was determined by UV-visible spectrophotometry. The moisture, dissolubility and granularity of preparation were determined. RESULTS:TLC spots of R. bupleuri ,A. macrocephala and G. uralensis were clear and well-separated without interference from negative control. The linear range of rutin was 0.050-0.300 mg/mL(r＝0.999 8). RSDs of precision, stability and reproducibility tests were all lower than 2%. The recoveries were 97.89%-100.01%(RSD＝0.68%,n＝9). The content of samples were 1.920-2.018 mg/g. The contents of moisture in 3 batches of samples were 1.54%,1.62% and 1.57%;all samples dissolved within 5 min. The sum of granules not passing through No.1 sieve and passing through No.5 sieve were 2.13%, 2.51%,2.38%,which were all in line with the requirements of Chinese Pharmacopeia (2015 edition,Vol Ⅳ). CONCLUSIONS:The content of total flavonoicle in Chailing hugan granules should be no less than 1.57 mg/g (by rutin). Established quality standard is simple,rapid,accurate and reproducible,and can be used for quality control of Chailing hugan granules.

Objective:To study the clinical characteristics of neonatal umbilical vascular catheter (UVC) rupture.Methods:A neonate with UVC rupture admitted to Neonatology Department of our hospital was retrospectively reviewed. Literature on this subject were searched in the following databases: Chinese Medical Journal full-text Database, CNKI, Wanfang Database, CQVIP database, PubMed, Web of Science, Embase and Cochrane Library (up until March 15 2022). The causes, treatment and prognosis of neonatal UVC rupture were analyzed.Results:In our case, the UVC was accidentally damaged during the removal of the ligature suture. The UVC was ruptured after a slight force was applied to remove the catheter, resulting in approximately 7 cm of UVC remaining in the body. Trans-umbilical vein intervention was performed and the catheter was successfully removed with a lasso under X-ray guidance. A total of 33 UVC rupture cases were included from 15 articles (no case report in China before). In 16 cases (47.1%), the UVCs were accidentally cut off by knife or scissors when removing the catheter. In 3 cases (8.8%), the UVCs were broken during insertion. The UVC was broken in 1 case (2.9%) during flushing the catheter. The causes of the other 14 cases (41.2%) were unknown. 9 cases (26.5%) had clinical manifestations, including respiratory distress, prominent heart murmur, sepsis and limb ischemia. 20 cases (58.8%) showed no clinical features. No data on the other 5 cases (14.7%). 21 cases (61.8%) received vascular intervention removal, 11 cases (32.4%) received surgical removal, 1 case (2.9%) was removed with tweezers, and 1 case (2.9%) died before UVC was removed. Among the neonates receiving surgical treatment, 1 case died of sepsis on the second day after surgery and 1 case had sequela of limb ischemia. 2 cases had postoperative vasospasm and embolism after vascular intervention with overall good prognosis.Conclusions:The rupture of UVC in neonates is rare and mainly related with knife and scissors injury.