Objective To determine the content of gentiopicroside and to evaluate the quality of Radix Gentianae Macrophyllae in Gansu province.Methods The HPLC method was performed on Waters C18 column.Methanol-water(3 ∶7) were used as the mobile phase,the flow rate was at 1.0 mL?min-1 with the detection wavelength being 254 nm.Results For gentiopicroside,the linear range was 1.7352～17.3520 ?g and the average recovery was 97.06 %with RSD=2.5 %.Conclusion The content of gentiopicroside in all of the samples produced in Gansu province is higher than or approach to the standard for Radix Gentianae Macrophyllae in Chinese Pharmacopoeia.

Objective To investigate the treatment of neonatal respiratory distress syndrome by less invasive surfactant administration(LISA)clinical efficacy,complications and influence on blood gas analysis.Methods A total of 100 cases of neonatal respiratory distress syndrome requiring pulmonary surfactant(PS)tracheal injection therapy and admitted to the Jinhua Central Hospital between December 1st 2019 and August 1st 2022 were randomly assigned into treatment group(50 cases)and control group(50 cases).The treatment group of children received PS treatment using LISA technology,while the control group of children received PS treatment using tracheal intubation tracheal instillation PS extubation followed by intubation-surfactant-extubation technology.The clinical treatment effect,blood gas analysis,non-invasive ventilation time,length of hospitalization,and incidence of complications were compared between the two groups.Results The total effective rate of treatment in the treatment group was higher than that in the control group;After 1 hour of PS treatment,the oxygen partial pressure and blood oxygen saturation of the treatment group were higher than those of the control group,while the carbon dioxide partial pressure was lower than that of the control group.The non-invasive assisted ventilation time of the treatment group was shorter than that of the control group.The incidence of bronchopulmonary dysplasia was lower than that of the control group.Their difference were statistically significant(P<0.05).Conclusion The use of LISA technology for PS treatment of NRDS can improve blood gas indicators,shorten non-invasive ventilation time,improve diagnostic and therapeutic effects,reduce the risk of bronchopulmonary dysplasia,and do not increase the incidence of complications such as tracheal mucosal injury and pulmonary hemorrhage in children.