Objective:To analyze the current status of referral of stroke inpatients and explore the characteristics of the referral network in Changsha, for the reference to improve and promote the hierarchical medical system of stroke.Methods:Data of the inpatient medical record of stroke patients and the annual reports of medical institutions in Changsha in 2018 were collected from the health statistics network direct reporting system of Health Commission of Hunan province, for analysis of the referrals of inpatients in different medical institutions. Social network analysis was adopted to analyze the density, centrality and K-core of the referral network of stroke inpatients.Results:A total of 82 medical institutions for stroke inpatients were included with 2 859 referrals of patients. Most of the referrals were made between tertiary hospitals(1 515), especially within hospitals of a stroke alliance(1 123). The density of referral network was 0.613.Tertiary hospitals were in the center of the network, the entry points of secondary hospitals were in the center of the network and primary medical institutions were located at peripheral positions. Most of the tertiary hospitals in the 15-core(14, 72.68%), 12 of them were the units of Hunan Stroke Alliance.Conclusions:Tertiary hospitals played an important role in the region, secondary hospitals were able to receive patients referred by tertiary hospitals, but few patients were transferred to primary care institutions; The primary medical institutions failed to play due roles in the referral network. The establishment of stroke alliances could promote the cooperation of hospitals in the alliance, but the division of labor and cooperation among different levels of medical institutions in the region needed to be further optimized.

AIM: To investigate the effect of different lens combinations on visual acuity, visual quality and patient satisfaction by comparing mixed implantation of Tecnis Symfony ZXR00(ZXR00)and Tecnis ZMB00(ZMB00)lenses, bilateral implantation of ZMB00 lenses, and bilateral implantation of ZXR00 lenses.METHODS:This retrospective case-control study included 117 patients with cataracts(234 eyes)who underwent phacoemulsification combined with intraocular lens(IOLs)implantation from August 2020 to December 2021. The 3 groups included 36 patients(72 eyes)who underwent bilateral implantation of ZXR00(RR group), 37 patients(74 eyes)who underwent bilateral implantation of ZMB00(MM group), and 44 patients(88 eyes)who underwent implantation with a combination of ZXR00 and ZMB00(MR group). The uncorrected distance visual acuity(UDVA, 5 m), uncorrected intermediate visual acuity(UIVA, 80 cm), uncorrected near visual acuity(UNVA, 40 cm), corrected distance visual acuity(CDVA), defocus curve, stereopsis and VF-14 and QoV visual quality scale of the patients in the three groups were assessed at 3-month follow-up.RESULTS:Bilateral UNVA in the MM and MR group were significantly better than that in the RR group(P<0.05). Bilateral UIVA was the best in the RR group. There were no significant differences in bilateral UDVA, CDVA and stereopsis among the groups(P>0.05). Values for near-stereoscopic acuity at 40 cm were 107.27±80.53, 105.67±83.79, and 108.69±97.66(20-400)arcsec in the MR, MM, and RR groups, respectively(P>0.05). Satisfaction rates exceeded 90% in all groups.CONCLUSION:All groups achieved good distance, intermediate, and near visual acuity and near-stereoscopic vision postoperatively. Mixed implantation with ZXR00 and ZMB00 lenses achieved excellent full-range vision and resulted in high satisfaction. These results may aid in developing individualized clinical treatment plans.