Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.

BACKGROUND:Finite element analysis is a commonly used mathematical modeling method to analyze the biomechanics of the lumbar spine.By constructing finite element models of the complex tissues such as muscles,blood vessels,and nerves in the lumbar region,mechanical analysis is performed to elucidate the pathogenesis of lumbar spine disorders and the mechanical mechanisms of treatment approaches. OBJECTIVE:To review the progress of finite element analysis in understanding the pathogenesis and treatment modalities of lumbar spine disorders,and to propose a new clinical workflow for the implementation of finite element analysis,aiming to provide a reference for future studies and promote the widespread utilization of finite element analysis in clinical diagnosis and treatment. METHODS:The PubMed database was searched using English keywords"finite element analysis,lumbar vertebra",while the WanFang and China National Knowledge Infrastructure(CNKI)databases were searched using Chinese keywords"finite element analysis,lumbar vertebra".A total of 73 articles were included for review. RESULTS AND CONCLUSION:(1)Lumbar spine degeneration in non-slipped patients typically originates from the posterior annulus fibrosus,while in patients with lumbar spine spondylolisthesis,degeneration starts from the lumbar facet joints due to abnormal mechanical mechanisms.(2)Restoring vertebral body height can prevent adjacent-level degeneration,and finite element analysis-measured vertebral compression strength can serve as an effective predictor of fracture risk,replacing bone density measurements.(3)In lumbar spine fusion surgery,selecting fusion devices of appropriate height and placing them transversely can prevent device subsidence.Increased intervertebral strain,circumferential stress,and intervertebral pressure in adjacent segments after fusion surgery may contribute to the occurrence of degenerative changes in neighboring segments.(4)Finite element analysis results suggest that preoperative planning for transforaminal endoscopic surgery should include considerations for osteotomy size to avoid excessive destruction of the articular process,and intraoperatively,preferential selection of a technique that traverses the superior articular process for foraminal dilatation.(5)In percutaneous kyphoplasty,bilateral pedicle screw augmentation should be performed,distributing bone cement on both sides of the pedicle.More advanced non-aluminum glass polyalkenoate cement materials should be selected.(6)Traction therapy should be personalized based on individual patient characteristics,including customized traction angles and forces,to achieve optimal therapeutic effects.(7)Manual therapy can induce relative displacement between the herniated intervertebral disc and the nerve root,thereby reducing compression.(8)The workflow involving CT/MR-AI Plus FEA-AI Plus Surgical robots can enable more precise diagnosis and treatment.

Objective To verify the mechanism of Buyang Huanwu decoction in the treatment of spinal cord injury based on network pharmacology and molecular docking.Methods The active ingredients and targets of Buyang Huanwu decoction were screened out by TCMSP,SymMap,PubChem and Swiss Target Prediction databases.Spinal cord injury targets were retrieved from OMIM,GeneCards,TTD,and DrugBank databases.Through venny software,the intersection target of Buyang Huanwu decoction and spinal cord injury was obtained.The active ingredient-target network for the treatment of spinal cord injury was constructed with Cytoscape software.Gene ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analysis of common targets were carried out by DAVID,and the binding ability of drugs and targets was analyzed by molecular docking technology.Results A total of 106 active ingredients and 225 targets of Buyang Huanwu decoction,1315 targets of spinal cord injury and 112 targets of drug-disease intersection were obtained.The active ingredients of Buyang Huanwu decoction were quercetin,kaempferol,ellagic acid,luteolin and hederagenin in the treatment of spinal cord injury.Conclusion Buyang Huanwu decoction can achieve the purpose of treating spinal cord injury through various signal pathways.

Objective:To investigate the classification of main pancreatic duct and treatment strategy after linear stapler closure of pancreatic neck in laparoscopic pancreaticoduodenectomy (LPD).Methods:The records of 51 consecutive patients with LPD who were treated by linear staple closure technique of pancreatic neck from February to December 2022 from Binzhou Second People′s Hospital, Shijingshan Campus, Beijing Chaoyang Hospital, Capital Medical University, Rizhao Hepatobiliary-Pancreatic-Splenic Surgery Research Institute, Chaoyang Central Hospital, Shandong Juxian People′s Hospital, Weihai Municipal Hospital, Binzhou Central Hospital, and Affiliated Hospital of Chifeng University were retrospectively reviewed. According to the visibility, position and diameter of the main pancreatic duct at the stump of the pancreas, the type of main pancreatic duct was divided into type I, type Ⅱ, type Ⅲa and type Ⅲb. The number of cases in each main pancreatic duct classification and the corresponding treatment strategies were examined.Results:A total of 51 cases of LPD were successfully completed. Of these patients, the males comprised 56.9%(29/51), and females comprised 43.1%(22/51), with age ranging from 31 to 88 years old. The type of the main pancreatic duct at the stump of the pancreas included 7 cases (13.7%) of type Ⅰ, 39 cases (76.5%) of type Ⅱ, 2 cases (3.9%) of type Ⅲa, and 3 cases (5.9%) of type Ⅲb. Corresponding treatment strategies were adopted according to different main pancreatic duct types, the main pancreatic duct was successfully found, and a support drainage tube was inserted.Conclusion:After linear stapler closure of pancreatic neck, corresponding treatment strategies should be adopted according to the classification of the main pancreatic duct, which would help to improve the success rate of finding the main pancreatic duct and placing a support drainage tube.

d-α-Tocopheryl polyethylene glycol 1000 succinate (TPGS, also known as vitamin E-TPGS) is a biodegradable amphiphilic polymer prepared by esterification of vitamin E with polyethylene glycol (PEG) 1000. It is approved by the US Food and Drug Administration (FDA) and has found wide application in nanocarrier drug delivery systems (NDDS). Fully characterizing the in vivo fate and pharmacokinetic behavior of TPGS is important to promote the further development of TPGS-based NDDS. However, to date, a bioassay for the simultaneous quantitation of TPGS and its metabolite, PEG1000, has not been reported. In the present study, we developed such an innovative bioassay and used it to investigate the pharmacokinetics, tissue distribution and excretion of TPGS and PEG1000 in rat after oral and intravenous dosing. In addition, we evaluated the interaction of TPGS with cytochromes P450 (CYP450s) in human liver microsomes. The results show that TPGS is poorly absorbed after oral administration with very low bioavailability and that, after intravenous administration, TPGS and PEG1000 are mainly distributed to the spleen, liver, lung and kidney before both being slowly eliminated in urine and feces as PEG1000. In vitro studies show the inhibition of human CYP450 enzymes by TPGS is limited to a weak inhibition of CYP3A4. Overall, our results provide a clear picture of the in vivo fate of TPGS which will be useful in evaluating the safety of TPGS-based NDDS in clinical use and in promoting their further development.

Objective: To learn the epidemiological characteristics of coronavirus disease 2019（COVID-19）in Huzhou,so as to provide reference for prevention and control of COVID-19. Methods: All the confirmed cases of COVID-19 in Huzhou,diagnosed according to the COVID-19 Diagnosis and Treatment Plan（Sixth Version Trial）and reported from January 25 to February 7,2020,were recruited. The process of diagnosis and treatment,clinical manifestation,exposure history and close contacts were collected to analyze the epidemiological characteristics. Results: On January 25,the first confirmed cases of COVID-19 in Huzhou was reported. By February 7,totally 10 confirmed cases were reported and no asymptomatic infection was found. They were all imported,including three Wuhan residents,two with a trip to Wuhan,three with a trip to Suizhou,one with a trip to Hangzhou and one with a trip to Thailand（two Wuhan passengers on the same flight）. The ratio of male to female cases was 1∶1. The median age was 32 years old. Seven cases were found when they went to a doctor by themselves,and three cases were found during the quarantine. The main clinical manifestations were fever,dry cough and fatigue. The median time from onset to diagnosis was 3 days. By March 3,all the cases were discharged,with median course of 24 days. There were 312 close contacts,and all of them were released after 14 days of quarantine. Conclusions To prevent imported cases from outside and stop spread inside taken by Huzhou government was proved to be effective. All the COVID-19 cases in Huzhou were imported,mostly from Wuhan. No local cases were reported.

Objective:To evaluate the reliability and repeatability of thoracolumbar AOSpine injury score (TLAOSIS)and thoracolumbar injury severity score (TLICS) classification scoring system in guiding thoracolumbar fracture surgery, and to explore the main reasons for the consistency of classification scoring systems.Methods:Fifty-five thoracolumbar fracture patients with complete clinical data and radiologic data admitted to Second Affiliated Hospital of Zhejiang Chinese Medical University from January 2018 to December 2018 were enrolled. Based on their preoperative X-ray films, CT and MRI, six physicians were assigned to independently determine the classification using the TLAOSIS and TLICS.For the same patient, the classification was identified as inconsistency among 6 observers if there was an observer in a different type.After a 4-week interval, the 55 patients were presented in a random sequence to the same evaluators for repeated evaluation.All data did not contain any marks related to the type. The Cohen's Kappa coefficient was used to determine the interobserver reliability and intraobserver repeatability concerning fracture morphology, posterior ligament classification (PLC) injury classification and neurological function score. Kappa coefficients were used to observe the consistency of pre- and post-measure measurements within each observer.Results:The two classification scoring systems had good consistency and reproducibility in guiding surgery. For TLAOSIS classification scoring system, the interobserver and intraobserver Kappa values for fracture morphology were 0.806 and 0.667; neurological status were 0.937 and 0.891; PLC injury classification were 0.873 and 0.779; the final recommendation surgery were 0.816 and 0.764. For TLICS classification scoring system, the interobserver and intraobserver Kappa values for fracture morphology were 0.878 and 0.788; neurological status were 0.936 and 0.888; PLC injury classification were 0.809 and 0.691; the final recommendation surgery were 0.811 and 0.705. The two classification scoring systems were statistically significant in fracture morphology and PLC injury classification both in the reliability and repeatability analysis ( P<0.05), but there was no significant difference in the neurological function score ( P>0.05). Conclusions:TLAOSIS and TLICS have good consistency and reproducibility in guiding surgery. The fracture morphology and PLC injury classification are the factors influencing the consistency of surgical guidance for the two classification scoring systems.

Objective:To compare the differences between thoracolumbar AO spine injury score (TL AOSIS) and thoracolumbar injury classification and severity score system (TLICS) in guiding thoracolumbar fracture surgery.Methods:A retrospective study was conducted of the 55 patients with complete preoperative imaging data who had been treated for thoracolumbar injuries at Department of Spinal Surgery, The Second Affiliated Hospital to Zhejiang Chinese Medical University from January 2015 to December 2016. They were 34 men and 21 women, aged from 21 to 55 years (average, 37.5 years). Of them, 31 were identified as having normal neurological function and 24 as having impaired neurological function. TL AOSIS and TLICS were used to evaluate respectively all the patients, those with normal neurological function and those with impaired neurological function, and consequently made suggestions whether surgery should be performed or not.Results:Among the 55 patients, by the guidance of TL AOSIS and TLICS respectively, conservative treatment was suggested for 19 and 25 cases, either conservative treatment or surgery for 12 and 13 cases, and surgery for 24 and 17 cases. There was fine consistency between the 2 scoring systems in surgery suggestion for thoracolumbar fracture ( P=0.358). Among the 31 patients with normal neurological function, by the guidance of TL AOSIS and TLICS respectively, conservative treatment was suggested for 19 and 25 cases, either conservative treatment or surgery for 6 and 0 cases, and surgery for 6 and 6 cases. TLICS suggested surgery for significantly more patients than TL AOSIS did ( P=0.033). Among the 24 patients with impaired neurological function, by the guidance of TL AOSIS and TLICS respectively, either conservative treatment or surgery was suggested for 6 and 13 cases, and surgery for 18 and 11 cases. TL AOSIS suggested surgery for significantly more patients than TLICS did ( P=0.039). Conclusion:There is fine consistency between TL AOSIS and TLICS in surgery suggestion for thoracolumbar fracture, but TL AOSIS may lead to more surgery suggestions for the patients with complete burst fracture or impaired neurological function than TLICS.

Spinal cord injury can lead to varied degrees of sensory and motor dysfunction, with high incidence, high disability rate and high cost, causing a huge burden on the patient's family and society. The researches on spinal cord injury have received much attention from all sectors of society. At present, drug therapy is the main treatment for spinal cord injury, and the clinical application of non-pharmacological treatments is still controversial. In recent years, with the deepening of the research on spinal cord injury, the application of electrical stimulation in the treatment of spinal cord injury has made some progress. The author reviews the electrical stimulation, brain stimulation, magnetic stimulation of spinal cord injury, so as to provide reference for the clinical treatment of spinal cord injury.

Objective To explore the curative effect of anterolateral musculocutaneous flap to repair the soft defect of the lower leg amputation stump which on the verge of reamputation, and preserved the length of leg or the knee joint to improve prosthetic limb function. Methods Four patients with soft defect and bone expose of proxi-mal leg amputation stump were enrolled in this study from April, 2013 to November, 2016. Each patient underwent stump revision using anterolateral musculocutaneous flap, including 3 free musculocutaneous flaps and 1 pedicle mus-culocutaneous flap. The patients were all male with the mean age of 20(8-48) years. The wound was treated debride-ment, and reconstructed on the second stage. Defect area was from 7.0 cm×6.0 cm to 25.0 cm×10.0 cm. Anterolateral musculocutaneous flaps was from 13.0 cm×10.0 cm to 28.0 cm×12.0 cm. The length of preservation tibia stump was from 5.2 cm to 9.4 cm. Results All patients were followed-up from 12 months to 37 months (average, 19 months). All the musculocutaneous flaps survived completely with a soft tissue texture, elastic, and very wear-resisting. The sensory return was determined to be S2in 2 patients, S3in 1 patient and S3+ in 1 patient. The 6-Minute Walk Test:grade Ⅳ in 2 cases, grade Ⅲ in 2 cases; Stanmore movement classification: gradeV in 2 cases, grade Ⅳ in 2 cases. Conclusion The anterolateral musculocutaneous flap maybe is an ideal flap to provid stable coverage for the stump of leg amputation which on the verge of reamputation.