Background and objective Radiofrequency ablation (RFA) combined with chemotherapy has a certain short-term therapeutic effect for the treatment of advanced non-small cell lung cancer (NSCLC), but whether it can improve the long-term survival rate of patients is still controversy. This study retrospectively analyzed the difference of long-term effi-cacy between RFA combined with chemotherapy and chemotherapy alone in the treatment of patients with advanced NSCLC. Methods A total of 77 patients with stage IIIb and stage IV NSCLC who underwent radiofrequency ablation and chemo-therapy in the Department of Thoracic Surgery, Xuanwu Hospital, Capital University of Medical Sciences from September 2009 to December 2015 were enrolled as the treatment group. Chemotherapy with no radiofrequency ablation was performed in 56 patients with stage IIIb and stage IV NSCLC as the control group. Two groups of patients were followed up by telephone about their living conditions. "Survival" package of R software version 3.4.1 was used for statistical analysis. Two sets of data baseline levels were tested by chi-square test.The bias was processed by Cox regression model and the survival curve was plot-ted using covariate mean substitution method. Results The first-year survival rate of the treatment group was 70.74%, the two-year survival rate was 39.31% and the median survival time was 22.1 months. The one-year survival rate was 54.54% in the control group, the two-year survival rate was 19.49%, the median survival for 18.1 months. The long-term survival rate of the treatment group was better than that of the control group (P<0.05, OR=0.571). Conclusion Radiofrequency ablation of lung cancer combined with chemotherapy can significantly improve the 2-year survival rate of patients with stage IIIb and stage IV NSCLC.

Objective:To analyze the value and difference of the optic nerve sheath pulse dynamic deformation index (DI) in normal-tension glaucoma (NTG) and high-pressure primary open angle glaucoma (POAG).Methods:A cross-sectional study was conducted to collect clinical data at the Eye Center of Beijing Tongren Hospital from June 2016 to March 2017, 32 patients with NTG and 35 patients with high-pressure POAG were sampled.For all subjects, their basic information, body mass index (BMI), mean arterial blood pressure (MAP), 24 hours intraocular pressure, and ophthalmologic examinations required for diagnosis were recorded.All subjects underwent transorbital ultrasonography and for each 15 seconds of consecutive ultrasound images were taken.The dynamic post-processing technique was used to calculate the DI.The difference in DI between the two groups and the correlation of DI with other variables were analyzed.The study protocol was approved by the Ethics Committee of Beijing Tongren Hospital.Written informed consent was obtained from all subjects prior to their entering the study cohort and receiving the transorbital ultrasound examination.Results:The median level of DI in the NTG group was 0.51 (0.48, 0.54), which was higher than that in the high-pressure POAG group (0.23[0.20, 0.25]), exhibiting a significant difference ( Z=-7.01, P<0.01). The mean BMI in the NTG group was lower than that in the high-pressure POAG group([21.29±4.64]kg/m 2vs. [23.53±3.40]kg/m 2), the mean MAP in the NTG group was lower than that in the high-pressure POAG group([91.44±14.30]mmHg vs. [104.05±13.96] mmHg), the differences between the two groups were statistically significant ( t=-2.30, P<0.05; t=-3.65, P<0.01). There was no statistical association between the two groups of DI and age, MAP, BMI, mean intraocular pressure and maximum intraocular pressure (all at P>0.05). Conclusions:The DI of the NTG patient is higher than that of the POAG patient, which indicates that the optic nerve sheath subarachnoid pressure and optic nerve sheath stiffness in NTG patients are lower than those in POAG patients.Therefore, the DI is a potential indicator of non-invasive intracranial pressure and translaminar cribrosa pressure difference detection in ophthalmology.