Objective:To design a large-scale mobile emergency resuscitation unit based on 5G communication technology to improve the efficiency of prehospital transportation and treatment.Methods:The study was conducted in Hangzhou from November 2022 to September 2023. It's sorted out the application scenario requirements for prehospital first aid, transfer, and prehospital-intrahospital emergency linkage in carrying out the program design, single technology testing, onboard debugging, and integration debugging phases sequentially.Results:In September 2023, a large-scale 5G mobile emergency resuscitation unit was completed and delivered. The unit was converted from an electric bus and consists of five parts: (1) Vehicle appearance: the vehicle is 12.9 meters long, 2.3 meters wide and 2.6 meters high, with a single mileage of 200 kilometers; (2) The overall internal structure: the vehicle has one resuscitation bed and two stretcher positions. Additionally, there is a comprehensive operating table located at the front of the vehicle. The middle of the vehicle is equipped with a central digital control screen. (3) First aid materials and instruments: the vehicle's materials are modularly configured in accordance with the resuscitation, guardianship, surgery, inspection and testing, Communication modular configuration, equipped with a defibrillation monitor, transfer ventilator, extracorporeal membrane lung oxygenation and other critical care first aid and electrocardiogram, digital radiography, blood gas analyzer, chest pain 5 monitors and other inspection and testing equipment; (4) Vehicle communication and information systems: equipped with high-definition remote video interactive system, telemedicine terminal DP300 integrated system, a real-time panoramic experience system and centralized guardianship system; (5) Vehicle disinfection: a plasma disinfector installed on the top of the car can meet the hospital disinfection hygiene standardsⅡ class environmental management requirements.Conclusions:Incorporating 5G communication technology, the large-scale mobile emergency resuscitation unit is equipped with various advanced treatment equipment and remote consultation systems. It can accommodate the resuscitation needs of the most critically ill patients, offering substantial support for public emergency rescues. Further exploration of its potential is merited.

Glioblastoma (GBM) therapy is severely impaired by the blood-brain barrier (BBB) and invasive tumor growth in the central nervous system. To improve GBM therapy, we herein presented a dual-targeting nanotheranostic for second near-infrared (NIR-II) fluorescence imaging-guided photo-immunotherapy. Firstly, a NIR-Ⅱ fluorophore MRP bearing donor-acceptor-donor (D-A-D) backbone was synthesized. Then, the prodrug nanotheranostics were prepared by self-assembling MRP with a prodrug of JQ1 (JPC) and T7 ligand-modified PEG_5k-DSPE. T7 can cross the BBB for tumor-targeted delivery of JPC and MRP. JQ1 could be restored from JPC at the tumor site for suppressing interferon gamma-inducible programmed death ligand 1 expression in the tumor cells. MRP could generate NIR-II fluorescence to navigate 808 nm laser, induce a photothermal effect to trigger in-situ antigen release at the tumor site, and ultimately elicit antitumor immunogenicity. Photo-immunotherapy with JPC and MRP dual-loaded nanoparticles remarkably inhibited GBM tumor growth in vivo. The dual-targeting nanotheranostic might represent a novel nanoplatform for precise photo-immunotherapy of GBM.

Cancer immunotherapy is impaired by the intrinsic and adaptive immune resistance. Herein, a bispecific prodrug nanoparticle was engineered for circumventing immune evasion of the tumor cells by targeting multiple immune resistance mechanisms. A disulfide bond-linked bispecific prodrug of NLG919 and JQ1 (namely NJ) was synthesized and self-assembled into a prodrug nanoparticle, which was subsequently coated with a photosensitizer-modified and tumor acidity-activatable diblock copolymer PHP for tumor-specific delivery of NJ. Upon tumor accumulation via passive tumor targeting, the polymeric shell was detached for facilitating intracellular uptake of the bispecific prodrug. NJ was then activated inside the tumor cells for releasing JQ1 and NLG919 via glutathione-mediated cleavage of the disulfide bond. JQ1 is a bromodomain-containing protein 4 inhibitor for abolishing interferon gamma-triggered expression of programmed death ligand 1. In contrast, NLG919 suppresses indoleamine-2,3-dioxygenase 1-mediated tryptophan consumption in the tumor microenvironment, which thus restores robust antitumor immune responses. Photodynamic therapy (PDT) was performed to elicit antitumor immunogenicity by triggering immunogenic cell death of the tumor cells. The combination of PDT and the bispecific prodrug nanoparticle might represent a novel strategy for blockading multiple immune evasion pathways and improving cancer immunotherapy.

Objective:To explore the feasibility and effectiveness of the construction of urban unmanned aerial vehicle (UAV) blood distribution system, and to provide a novel way for the distribution of emergency blood.Methods:The study was completed in Hangzhou from April 2019 to January 2021, and the main participants were from the Second Affiliated Hospital of Zhejiang University School of Medicine, Zhejiang Province Blood Center and Hangzhou Fast Ant Network Technology Co., Ltd. Firstly, an unmanned aircraft delivery system was built for urban emergency blood and a special blood storage box for drones were developed. The drone was used to deliver blood products from Zhejiang Province Blood Center to Binjiang Campus, the Second Affiliated Hospital of Zhejiang University School of Medicine, and the following indicators were obtained: (1) flight time of the drone blood delivery; (2) real-time temperature of blood products during transportation; (3) Baidu map software was used to measure the blood delivery time of road traffic, which was compared with the flight time of the drone.Results:The urban drone blood delivery system consists of intelligent logistics drones, cryogenic blood storage tanks, unmanned logistics hub stations, and cloud-based operation control platforms. The drone route distance from Zhejiang Provincial Blood Center to Binjiang Campus, the Second Affiliated Hospital of Zhejiang University School of Medicine was 2.36±0.06 km, and the ground distance was 5.8 km, with 27 flights from April 12, 2019 to January 29, 2021, and the drone flight time was, shorter than the road travel time for a round trip [(6.37±0.35) min vs. (17.00±1.94) min]. At different time points of the day, UAV blood delivery could save 15.98-4.28 min, with an average saving of 10.62±1.87 min. Conclusions:Urban UAV blood delivery systems have the advantages of being fast, unaffected by ground traffic conditions, and can ensure the safety of blood products during transportation, and are worthy of further exploration.

Objective:To explore the new generation of intelligent ICU Unit based on 5G and artificial intelligence technology.Methods:This study was conducted at the Second Affiliated Hospital, Zhejiang University School of Medicine from May 2019 to August 2020. Based on a multidisciplinary team including medical, nursing, hospital management, clinical medical engineering, 5G technology, information technology, artificial intelligence technology, logistics service, etc, was assembled to intelligently design and reconstruct an intelligent ICU Unit of Emergency ICU.Results:Based on 5G technology, a new intelligent ICU unit environment was constructed to realize remote and high-speed interaction of multi-dimensional information in ICU, including intelligent assistance of remote monitoring, remote ward rounds, remote consultation and family visits. An intelligent hospital infection prevention and control system was established including automatic identification and alarm of hand hygiene and personal protection.Conclusions:The new generation of intelligent ICU unit combined with 5G and artificial intelligence technology has changed the mode of medical service for critically ill patients and improved the service level, which is worthy of further exploration and application.

Objective:To evaluate the predictive performance of the individualized drug delivery decision-making system including Smart Dose, PharmVan and JPKD on predicting the Vancomycin plasma concentration and to analyze the related factors affecting the predictive performance.Methods:The clinical data of patients who were treated with Vancomycin and received therapeutic drug monitoring (TDM) admitted to the First Affiliated Hospital of Wenzhou Medical University from January 2018 to July 2020 were retrospectively collected. Smart Dose and PharmVan were used to predict the plasma concentration of Vancomycin of the initial regimen. Smart Dose, PharmVan and JPKD were used to predict the plasma concentration of Vancomycin of the adjustment regimen for patients whose initial steady-state trough concentration were not qualified. The relative predictive error (PE) between the measured plasma concentration and predicted plasma concentration was calculated and box plotted. Mann-Whitney U test was used to evaluate the difference of the absolute value of PE (APE) predicted by each software for Vancomycin plasma concentration. The TDM results were divided into accurate prediction group (APE < 30%) and the inaccurate prediction group (APE≥30%) according to the APE value. Patients and disease characteristics including gender, age, body weight complication, Vancomycin medication and TDM results were collected from electronic medical records. Univariate analysis and multivariate Logistic regression analysis were used to screen the related factors that influence the predictive performance of Smart Dose, PharmVan and JPKD; and receiver operating characteristic curve (ROC curve) was drawn to evaluate its predictive value. Results:A total of 185 patients were enrolled, and 258 plasma concentration of Vancomycin were collected, including 185 concentrations of initial regimen and 73 concentration of adjustment regimen. There was no significant difference in the APE of the initial regimen of plasma concentration between Smart Dose and PharmVan. No significant difference in the APE of the adjustment regimen of plasma concentration was found among Smart Dose, PharmVan and JPKD. The accuracy of Smart Dose in predicting the plasma concentration of the adjustment regimen was better than that of the initial regimen [22.94% (10.50%, 36.24%) vs. 29.33% (13.07%, 47.99%), P < 0.05]. The univariate analysis of factors affecting the performance of Smart Dose in predicting the concentration of initial regimen showed that the proportion of patients with hypertension in the accurate prediction group was significantly higher than that in the inaccurate prediction group [43.3% (42/97) vs. 27.3% (24/88), P < 0.05]. The univariate analysis of factors affecting the performance of Smart Dose in predicting the concentration of adjustment regimen showed that the proportion of patients with valvular heart disease in the accurate prediction group was significantly lower than that in the inaccurate prediction group [23.4% (11/47) vs. 46.2% (12/26), P < 0.05]. The univariate analysis of factors affecting the performance of JPKD in predicting the concentration of adjustment regimen showed that the body weight of patients in the accurate prediction group was significantly higher than that in the inaccurate prediction group (kg: 62.8±14.9 vs. 54.8±12.8, P < 0.05). Multivariate Logistic regression analysis indicated that hypertension was a beneficial factor for Smart Dose to predict the initial plasma concentration of Vancomycin [odds ratio ( OR) = 0.526, 95% confidence interval (95% CI) was 0.281-0.983, P = 0.044], and low body weight was an independent risk factor for the inaccurate prediction of JPKD for adjustment regimen ( OR = 1.042, 95% CI was 1.001-1.085 , P = 0.043). ROC curve analysis indicated that the area underROC curve (AUC) of the body weight for evaluating the accuracy of JPKD in predicting Vancomycin plasma concentration was 0.663, and 95% CI was 0.529-0.796 ( P = 0.023). When the body weight was less than 55.95 kg, the risk of inaccurate prediction of JPKD in predicting Vancomycin plasma concentration was increased, and the predictive sensitivityand specificity were 75% and 60% respectively. Conclusions:There is no significant difference in the predictive performance of Smart Dose, PharmVan or JPKD on Vancomycin plasma concentration. Smart Dose had a better predictive performance for the Vancomycin plasma concentration of adjustment regimen than initial regimen. Smart Dose had a better predictive performance when the patient was concomitant with hypertension. JPKD had a poor predictive performance for low-body weight patients. The predictive performance of JPKD was decreased when the body weight was lower than 55.95 kg.

Objective: To explore a new platform for pre-hospital and in-hospital emergency medical services based on a new generation of 5G communication technology, providing a basis for further improving the level of emergency medical services. Methods: This study was conducted at the Second Affiliated Hospital of Zhejiang University School of Medicine from October 2017 to April 2019. Based on the latest requirements of emergency medical services at home and abroad, the cross-enterprise and multi-disciplinary technical forces were organized to build platform. Firstly, to determine the process of pre-hospital and in-hospital emergency medical services, various modules and technical routes were constructed under 5G conditions and individual technologies were tested one by one. Then they were gradually integrated into two platforms of ambulance and hospital emergency. Finally, the simulation test is carried out under the support of the whole 5G network. Results: The pre-hospital and in-hospital emergency medical service platform based on 5G technology comprises of 5G ambulance, 5G panoramic VR real-time display system, 5G remote ultrasonic examination system, medical drone system, and 5G emergency command platform. 5G ambulance contains medical equipments such as multi-function monitor, ventilator, defibrillation monitor, portable B-ultrasound, high-definition remote video interactive system based on 5G network, VR immersive real-time panoramic experience system, and GPS positioning system. 5G panoramic VR real-time display system includes VR panoramic camera and VR glasses. The wearer with VR glasses can view the real-time situation on the ambulance, which makes a preliminary judgment on the patient's condition and provides rescue guidance. 5G remote ultrasonic examination system integrates robot technology, real-time remote control technology, and ultrasonic imaging technology. The specialist can control the movement of the ultrasonic probe set on the 5G ambulance by manipulating the mechanical arm. The patient's image and color super-picture can also be simultaneously returned to the specialist. The medical drone system enables the medical resources to be allocated in the shortest possible time through the 5G networked drones, so as to eliminate the delay caused by traffic congestion. 5G emergency command platform can integrate, transmit, and display data from multiple sources and forms through web pages in assistance of AI and internet of things. Conclusions The new platform for pre-hospital and in-hospital emergency medical services based on 5G technology can realize more fluent information exchange in pre-hospital and in-hospital, and realize the functions that are difficult to achieve under the previous network conditions.

Objective To investigate the effect of evidence-based pain nursing on postoperative pain and wound healing in hemorrhoids patients with hemorrhoid surgery. Methods A total of120 hemorrhoid cases treated from January to April 2018 in our hospital were randomly divided into observation group and control group. The control group (n = 60) received routine nursing during perioperative period, another 60 cases in the observation group were treated with evidence-based pain nursing on the basis of routine nursing. The postoperative pain and wound healing were compared between the two groups. Results The 24, 48 h pain scores as well as highest pain score of the observation group were all lower than that of the control group (P ＜ 0. 05). The pain scores of the first dressing change and the first bowel movement were lower than that of the control group (P ＜ 0. 05).The edema scores of the observation group at 24 and 48 hours after operation were lower, the wound score before discharge was lower, and the wound healing time was shorter than that of the control group (P ＜ 0. 05). Conclusion Evidence-based nursing can reduce postoperative pain degree, reduce wound edema and promote healing of hemorrhoid patients.

Objective To investigate the effect of evidence-based pain nursing on postoperative pain and wound healing in hemorrhoids patients with hemorrhoid surgery. Methods A total of120 hemorrhoid cases treated from January to April 2018 in our hospital were randomly divided into observation group and control group. The control group (n = 60) received routine nursing during perioperative period, another 60 cases in the observation group were treated with evidence-based pain nursing on the basis of routine nursing. The postoperative pain and wound healing were compared between the two groups. Results The 24, 48 h pain scores as well as highest pain score of the observation group were all lower than that of the control group (P ＜ 0. 05). The pain scores of the first dressing change and the first bowel movement were lower than that of the control group (P ＜ 0. 05).The edema scores of the observation group at 24 and 48 hours after operation were lower, the wound score before discharge was lower, and the wound healing time was shorter than that of the control group (P ＜ 0. 05). Conclusion Evidence-based nursing can reduce postoperative pain degree, reduce wound edema and promote healing of hemorrhoid patients.

Objective To reduce the risk of cervical spinal cord injury,the most medial point of the cervical intervertebral disc that the posterior percutaneous endoscopic sheath could reach was evaluated.And that could help to determine the indication of posterior percutaneous endoscopic cervical discectomy for cervical intervertebral disc herniation.Methods Cervical MRI images for 50 randomly selected patients,21 males and 29 females with ages from 20 to 60(average 33.5± 10.03 years),were analysed.All 50 patients underwent MRI examination at our institution between January 2014 and December 2017.As 50％ of the zygapophyseal joint was preserved,on the cross-section T2-weighted MRI images,when the sheath just touched the spinal cord,the intersection point of the medial wall of sheath and cervical spinal cord (Point L) was the most medial point of the posterior percutaneous endoscopy could get.The distance between Point L and the line through and tangent to the most lateral point of cervical disc border was the length of the line section DL.The distance between the middle sagittal line of the cervical disc and the line through and tangent to the most lateral point of cervical disc border was the length of the line section D.D1/D was the most medial distance ratio of the posterior percutaneous endoscopic cervical discectomy when 50％ of the lateral zygapophyseal joint was preserved.In the same way,D'1/D was the most medial distance ratio of the posterior percutaneous endoscopic cervical discectomy when 75％ of the lateral zygapophyseal joint was preserved.Results When 50％ of the lateral zygapophyseal joint was preserved,the upper limit of 95％ confidence intervals of the most medial distance ratio that the posterior percutaneous endoscopy could get were 78％,76％,81％,93％ in C3,4,C4,5,C5,6,C6,7 respectively.This meant that the most medial distance the posterior percutaneous endoscopy could get were the 78％,76％,81％,0.93％ of the length of the line section D in C3,4,C4,5,C5,6,C6,7 respectively.The most medial distance the posterior percutaneous endoscopy could get in C5,6 or C6,7 was longer than that in C3,4,C4,5.Conclusion When 50％ of the lateral zygapophyseal joint was preserved,the upper limit of the most medial distance ratio that the posterior percutaneous endoscopy should get were 78％,76％,81％,93％ in C3,4,C4,5,C5,6,C6,7 respectively.This meant that the most medial distance the posterior percutaneous endoscopy could get were the 78％,76％,81％,93％ of the length of line section D in C3,4,C4,5,C5,6,C6,7 respectively.If the resected disc was beyond this range,the cervical spinal cord should be in the risk of being injured.