In the new media era,the internet has become a vast"public opinion arena."As the main body of China's healthcare service system,public hospitals are characterized by high technology,high risk,and high social attention.Based on the communication features of the new media era,public opinion management in public hospitals faces greater difficulties and challenges.Drawing on the practical experience of online public opinion management in a tertiary public hospital in Guangzhou o-ver the past three years,this article summarizes the public opinion management mechanism,studies the content of public opin-ion,analyzes the challenges encountered,and explores strategies for managing online public opinion in public hospitals.

In the new media era,the internet has become a vast"public opinion arena."As the main body of China's healthcare service system,public hospitals are characterized by high technology,high risk,and high social attention.Based on the communication features of the new media era,public opinion management in public hospitals faces greater difficulties and challenges.Drawing on the practical experience of online public opinion management in a tertiary public hospital in Guangzhou o-ver the past three years,this article summarizes the public opinion management mechanism,studies the content of public opin-ion,analyzes the challenges encountered,and explores strategies for managing online public opinion in public hospitals.

As a new medium for communication,WeChat official accounts have become vital tools for public hospitals in disseminating health knowledge.With the advancement of smart hospitals,these accounts have gained significant attention as cru-cial platforms for health communication and brand promotion.This paper examines the WeChat official account(subscription ac-count)of a public hospital in Guangzhou,analyzing operational data from January 1,2022 to July 31,2024.It investigates the operational status,content production,and dissemination effects of various push content themes from a health communication per-spective.The study identifies existing issues and offers suggestions to enhance top-level design,address reader needs,and inno-vate new formats for science popularization.These measures are made to identify effective operational strategies and provide a ref-erence for public hospitals in the promotion of health-related knowledge through WeChat official accounts.

To determine whether the pathological changes caused by injury to the spinal cord can be correlated with values obtained by the Magnetic Motor Evoked Potential (MEPs) technique, we studied spinal cords from 41 adult cats who were divided into 4 groups. The groups ranged from normal cats whose spinal cords were not compressed, to slightly, moderately and severely injured. MEPs were recorded before compression and in 30 minutes, 6 hours, 1 week, 2 week and 4 week after the compression unit was installed. Pathological changes with increased pressure were seen in blood vessels, nerve cells and fibers, Nissl substance and the central canal. A reversal of pathological changes was observed in slight or moderate injury during the 4 weeks of the experiment. Extensive injury, however, caused irreversible changes in the nerve cells with loss of motor function. The latency of MEPs at 30 minutes and 6 hours in the slightly injured group was 0.37 and 0.38 times greater than the baseline and returned to normal levels in 4 weeks. In the moderately injured group, the latency was increased 0.77 and 0.81 times and in the severely injured 1.32 and 1.36 times over the baseline. Recovery in the second group was partial and not at all in the severely injured. Thus, there appears to be good correlation between observed pathological changes, motor functions and MEPs.