Objective To evaluate the effect of sodium hypochlorite and Ultra Clean on root canal cleaning and dentin structure.Methods A total of 129 single canal isolated teeth were collected and root canal was prepared to M # with Waveone Gold nickel titani-um file.After preparation,they were divided into 3 groups by random number table according to irrigant:group A sodium hypochlorite+normal saline,group B sodium hypochlorite+EDTA,and group C sodium hypochlorite+Ultra Clean.The dye was stained with 1％methylene blue solution,and the penetration depth and range of the dye solution were observed under a type microscope.The removal of debris and stain layer in the root canal was observed by digital camera and scanning electron microscope.The change of dentin micro-structure was analyzed by Fourier infrared spectrometer.Results In the upper middle part of the root canal,the penetration depth and range of group C were greater than those of groups A and B(P＜0.05);the percentage of debris in group C was lower than that of groups A and B(P＜0.05),and the stain layer score in groups B and C was lower than that of group A(P＜0.05).In the lower root ca-nal segment,groups B and C were superior to group A in the evaluation of permeability,debris and stain removal(P＜0.05).The demineralization ability and exposure of dentin collagen fiber in group C were higher than those in group A and blank group(P＜0.05).Conclusion Sodium hypochlorite combined with Ultra Clean is considered to have good cleaning effect and strong demineralization ability,but it may slightly increase the exposure of organic matter such as collagen fiber.

Objective To evaluate the effect of sodium hypochlorite and Ultra Clean on root canal cleaning and dentin structure.Methods A total of 129 single canal isolated teeth were collected and root canal was prepared to M # with Waveone Gold nickel titani-um file.After preparation,they were divided into 3 groups by random number table according to irrigant:group A sodium hypochlorite+normal saline,group B sodium hypochlorite+EDTA,and group C sodium hypochlorite+Ultra Clean.The dye was stained with 1％methylene blue solution,and the penetration depth and range of the dye solution were observed under a type microscope.The removal of debris and stain layer in the root canal was observed by digital camera and scanning electron microscope.The change of dentin micro-structure was analyzed by Fourier infrared spectrometer.Results In the upper middle part of the root canal,the penetration depth and range of group C were greater than those of groups A and B(P＜0.05);the percentage of debris in group C was lower than that of groups A and B(P＜0.05),and the stain layer score in groups B and C was lower than that of group A(P＜0.05).In the lower root ca-nal segment,groups B and C were superior to group A in the evaluation of permeability,debris and stain removal(P＜0.05).The demineralization ability and exposure of dentin collagen fiber in group C were higher than those in group A and blank group(P＜0.05).Conclusion Sodium hypochlorite combined with Ultra Clean is considered to have good cleaning effect and strong demineralization ability,but it may slightly increase the exposure of organic matter such as collagen fiber.

Objective To analyze the procurement data of lipid-lowering drugs in hospitals at different levels in Jiangsu Province from October 2019 to September 2023,to evaluate the impact of the volume-based procurement(VBP)policy,and to provide references for clinical rational drug use and healthcare policy optimization.Methods Based on procurement data from the Jiangsu Provincial Health Information Center,statistical analyses of procurement expenditures,defined daily doses(DDDs),and defined daily cost(DDC)were conducted.Mixed-effects models were applied to assess changes in procurement expenditures,DDDs,and DDC before and after VBP implementation.Results From 2019 to 2023,statins dominated the market in Jiangsu Province,with rosuvastatin recording the highest DDDs(748 million).Statins,traditional Chinese medicines,and cholesterol absorption inhibitors ranked highest in procurement expenditures.Tertiary hospitals accounted for the largest share of usage(47.6%)and expenditures(55.8%),while secondary hospitals had the lowest DDC(1.22 yuan)and tertiary hospitals the highest(1.89 yuan).Post-VBP,procurement expenditures and DDC decreased by 53.9%and 35.4%,respectively.Primary hospitals showed the largest expenditure reduction(61.6%),and secondary hospitals exhibited the greatest DDC decline(53.9%).DDDs increased significantly in primary care settings(e.g.,pitavastatin surged by 239.79%in secondary hospitals),while tertiary hospitals saw reduced usage of some drugs(e.g.,amlodipine/atorvastatin decreased by 7.34%).Mixed-effects models confirmed that VBP significantly reduced expenditures(OR=-1.07,P<0.01)and DDC(OR=-2.70,P<0.01)while indirectly lowering prices of non-VBP drugs.After covariate adjustment,expenditure reductions for rosuvastatin and atorvastatin narrowed,ezetimibe expenditures increased(OR=0.13,P<0.01),and pitavastatin usage declined(OR=-0.10,P<0.01).Changes in amlodipine/atorvastatin and ezetimibe lacked statistical significance due to short VBP implementation periods.Tertiary hospitals demonstrated the strictest policy adherence,with the largest expenditure and DDC reductions(P<0.01).Subgroup analysis revealed that the policy did not significantly affect clinical demand(DDDs)in hospitals at different levels,though it was considered to have triggered adjustments in medication structure.Conclusion Jiangsu's lipid-lowering drug structure aligns with guidelines(statin-based,moderate-intensity preference).VBP effectively reduced costs,with tertiary hospitals prioritizing originator-to-generic substitution and primary hospitals reflecting cost-control and demand variations.Confounding factors influenced policy evaluation.The study recommends continuous monitoring and policy optimization to enhance procurement efficiency,ensure rational clinical use,and sustain cost savings,providing insights for further healthcare reform.

Managing look-alike/sound-alike medications is important to medical institutions'pharmaceutical manage-ment and pharmacy services.Based on national policies and regulations,this standard focuses on the whole life cycle of look-alike/sound-alike medications in medical institutions.It is developed based on the principles of scientific validity,universality,guidance,and applicability,formed by sorting out problems,soliciting opinions,expert argumentation,and deliberation.It is the first group standard to standardize the management of look-alike/sound-alike medications.This paper introduced and analyzed the team com-position,problem sorting and compilation process,and various elements of the standard in the process of formulating the standard,to provide a reference for medical institutions to use this standard.

Objective To analyze the procurement data of lipid-lowering drugs in hospitals at different levels in Jiangsu Province from October 2019 to September 2023,to evaluate the impact of the volume-based procurement(VBP)policy,and to provide references for clinical rational drug use and healthcare policy optimization.Methods Based on procurement data from the Jiangsu Provincial Health Information Center,statistical analyses of procurement expenditures,defined daily doses(DDDs),and defined daily cost(DDC)were conducted.Mixed-effects models were applied to assess changes in procurement expenditures,DDDs,and DDC before and after VBP implementation.Results From 2019 to 2023,statins dominated the market in Jiangsu Province,with rosuvastatin recording the highest DDDs(748 million).Statins,traditional Chinese medicines,and cholesterol absorption inhibitors ranked highest in procurement expenditures.Tertiary hospitals accounted for the largest share of usage(47.6%)and expenditures(55.8%),while secondary hospitals had the lowest DDC(1.22 yuan)and tertiary hospitals the highest(1.89 yuan).Post-VBP,procurement expenditures and DDC decreased by 53.9%and 35.4%,respectively.Primary hospitals showed the largest expenditure reduction(61.6%),and secondary hospitals exhibited the greatest DDC decline(53.9%).DDDs increased significantly in primary care settings(e.g.,pitavastatin surged by 239.79%in secondary hospitals),while tertiary hospitals saw reduced usage of some drugs(e.g.,amlodipine/atorvastatin decreased by 7.34%).Mixed-effects models confirmed that VBP significantly reduced expenditures(OR=-1.07,P<0.01)and DDC(OR=-2.70,P<0.01)while indirectly lowering prices of non-VBP drugs.After covariate adjustment,expenditure reductions for rosuvastatin and atorvastatin narrowed,ezetimibe expenditures increased(OR=0.13,P<0.01),and pitavastatin usage declined(OR=-0.10,P<0.01).Changes in amlodipine/atorvastatin and ezetimibe lacked statistical significance due to short VBP implementation periods.Tertiary hospitals demonstrated the strictest policy adherence,with the largest expenditure and DDC reductions(P<0.01).Subgroup analysis revealed that the policy did not significantly affect clinical demand(DDDs)in hospitals at different levels,though it was considered to have triggered adjustments in medication structure.Conclusion Jiangsu's lipid-lowering drug structure aligns with guidelines(statin-based,moderate-intensity preference).VBP effectively reduced costs,with tertiary hospitals prioritizing originator-to-generic substitution and primary hospitals reflecting cost-control and demand variations.Confounding factors influenced policy evaluation.The study recommends continuous monitoring and policy optimization to enhance procurement efficiency,ensure rational clinical use,and sustain cost savings,providing insights for further healthcare reform.

Background:Rhei Radix et Rhizoma has been traditionally used as a potent laxative for centuries due to its remarkable efficacy.Raw pieces of Rhei Radix et Rhizoma(RP)are known for their strong laxative effects,often accompanied by side effects,while steamed Rhei Radix et Rhizoma pieces(SP)possess a milder laxative effect and are widely used clinically.However,there is a lack of comprehensive evidence examining the mechanisms underlying SP's effectiveness,particularly from a bioavailability perspective.Objective:This study aimed to investigate the impact of the steaming process on the in vivo disposition of RP and SP through pharmacokinetics,tissue distribution,and excretion assays.Methods:An ultra-performance liquid chromatography-tandem mass spectrometry method was developed for the simultaneous quantitative analysis of prototype anthraquinones and their glucuronide metabolites.Pharmacokinetic,tissue distribution,and excre-tion assays were conducted in constipation rats following oral administration of RP and SP.Blood,tissue,urine,and fecal samples were collected and analyzed to compare the absorption,distribution,metabolism,and excretion profiles of anthraquinones,high-lighting differences in bioavailability and safety between RP and SP.Results:Compared with the RP group,the SP group showed significantly reduced area under the plasma concentration-time curve,mean residence time,and half-life time values for rhein-8-O-β-D-glucopyranoside,rhein,emodin,aloe-emodin,and their glucuronide metabolites.The clearance values were significantly increased in the SP group.These results demonstrate that SP led to lower exposure levels and higher elimination rates of these components compared with RP.Additionally,these compo-nents were primarily distributed in the large intestine,where they exerted their laxative effects.Glucuronide metabolites were mainly excreted through urination,while prototype components were excreted in both urine and feces.Notably,the cumulative excretion of aloe-emodin,emodin,rhein,and their glucuronide metabolites was significantly higher in both urine and feces after SP administra-tion,indicating that SP enhances the excretion of these components compared with RP.Conclusion:The findings suggest that SP reduced anthraquinone exposure levels while enhancing their excretion,demonstrating that the steaming process significantly promotes the elimination of key components.This study provides a comprehensive analysis of how steaming alters the in vivo disposition of Rhei Radix et Rhizoma,offering a scientific basis for the improved safety and clinical use of SP.These insights not only clarify the mechanistic differences between RP and SP but also contribute to a broader understanding of processing-induced modifications in Chinese medicines.This research paves the way for optimizing Chinese medicine processing techniques to enhance the safety and efficacy of herbal therapies.

OBJECTIVE: To evaluate the early effectiveness of navigation-free robot-assisted total knee arthroplasty (TKA) compared to traditional TKA in the treatment of knee osteoarthritis combined with extra-articular deformities. METHODS: The clinical data of 30 patients with knee osteoarthritis combined with extra-articular deformities who met the selection criteria between June 2019 and January 2024 were retrospectively analyzed. Fifteen patients underwent CORI navigation-free robot-assisted TKA and intra-articular osteotomy (robot group) and 15 patients underwent traditional TKA and intra-articular osteotomy (traditional group). There was no significant difference in age, gender, body mass index, affected knee side, extra-articular deformity angle, deformity position, deformity type, and preoperative knee range of motion, American Knee Society (KSS) knee score and KSS function score, and lower limb alignment deviation between the two groups ( P>0.05). The operation time, intraoperative blood loss, and complications of the two groups were recorded and compared. The knee range of motion and lower limb alignment deviation were recorded before operation and at 6 months after operation, and the knee joint function was evaluated by KSS knee score and function score. RESULTS: There was no significant difference in operation time between the two groups ( P>0.05); the intraoperative blood loss in the robot group was significantly less than that in the traditional group ( P<0.05). Patients in both groups were followed up 6-12 months, with an average of 8.7 months. The incisions of all patients healed well, and there was no postoperative complication such as thrombosis or infection. At 6 months after operation, X-ray examination showed that the position of the prosthesis was good in both groups, and there was no loosening or dislocation of the prosthesis. The knee joint range of motion, the lower limb alignment deviation, and the KSS knee score and KSS function score significantly improved in both groups ( P<0.05) compared to preoperative ones. The changes of lower limb alignment deviation and KSS function score between pre- and post-operation in the robot group were significantly better than those in the traditional group ( P<0.05), while the changes of other indicators between pre- and post-operation in the two groups were not significant ( P>0.05). CONCLUSION Compared to traditional TKA, navigation-free robot-assisted TKA for knee osteoarthritis with extra-articular deformities results in less intraoperative blood loss, more precise reconstruction of lower limb alignment, and better early effectiveness. However, long-term effectiveness require further investigation.
Humans ; Arthroplasty, Replacement, Knee/methods* ; Osteoarthritis, Knee/surgery* ; Robotic Surgical Procedures/methods* ; Male ; Female ; Retrospective Studies ; Range of Motion, Articular ; Middle Aged ; Aged ; Treatment Outcome ; Osteotomy/methods* ; Knee Joint/physiopathology* ; Operative Time

Objective To compare the diagnostic values of different detection methods for respir-atory pathogens in children with acute respiratory infections.Methods A total of 862 children with a-cute respiratory infections were enrolled,and their throat swab samples were tested for seven common respiratory pathogens by the dual amplification method and a self-built nucleic acid detection system.For samples with inconsistent results between the two methods,nested polymerase chain reaction(PCR)was performed for verification.Results The positive detection rate of the dual amplification method was 57.75％,which was significantly higher than 30.14％of the self-built nucleic acid detec-tion system,and the detection rate of mixed infections was 10.14％,which was also significantly high-er than 1.97％of the self-built nucleic acid detection system(P＜0.05).The sensitivity of the dual amplification method was 91.63％,which was significantly higher than 72.61％of the self-built nu-cleic acid detection system,and the specificity was 92.31％,which was also significantly higher than 75.62％of the self-built nucleic acid detection system(P＜0.05).Conclusion The dual amplifica-tion method can simultaneously detect the ribonucleic acid of seven respiratory pathogens with high sensitivity and specificity,demonstrating significant clinical application value.

Managing look-alike/sound-alike medications is important to medical institutions'pharmaceutical manage-ment and pharmacy services.Based on national policies and regulations,this standard focuses on the whole life cycle of look-alike/sound-alike medications in medical institutions.It is developed based on the principles of scientific validity,universality,guidance,and applicability,formed by sorting out problems,soliciting opinions,expert argumentation,and deliberation.It is the first group standard to standardize the management of look-alike/sound-alike medications.This paper introduced and analyzed the team com-position,problem sorting and compilation process,and various elements of the standard in the process of formulating the standard,to provide a reference for medical institutions to use this standard.

Objective:To explore the clinical efficacy of periosteal induction technique combined with transfer of sural neurovascular flap in treatment of post-traumatic osteomyelitis of calcaneus with soft tissue defect.Methods:Clinical data, from January 2017 to December 2022, of 17 patients in the Army Institute for Traumatic Orthopaedics, the 920th Hospital of Joint Service Force of the Chinese People’s Liberation Amy with post-traumatic calcaneal osteomyelitis combined with soft tissue defect were retrospectively studied. The patients were 11 males and 6 females, with 46.5 (17-68) years in average. All patients received surgical treatment with periosteal induction technique in 2 phased surgies. Thorough debridement, antibiotics blended bone cement filling and wound coverage with sural neurovascular flap were carried out in phase-I surgery; The phase-II surgery were performed at 6-8 weeks after infection control to remove bone cement and then to transfer bone grafts for periosteal induction. After surgery, flap healing and infection control were observed. The infection control, pain improvement, recovery of ankle function and improvement of quality of life were evaluated by comparison of following parameters before and after surgery per phase: infection indicators [white blood cell count (WBC), erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP)], Visual Analogue Scale (VAS) score, American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot score, and MOS 36-item Short form Health Survey (SF-36, Boston Institute of Health, USA).Results:All 17 patients completed the two-phased surgical treatment, with an average interval of 9.4 (8-16) weeks between phase-I and phase-II surgery. All patients were included in the postoperative follow-up of 25.8 (13-40) months. After debridement in phase-I surgery, the sizes of soft tissue defect were found at 3.0 cm×2.0 cm-6.0 cm×8.0 cm. All flaps survived from the reconstructive surgery of sural neurovascular flap. Postoperative distal flap necroses occurred to 4 patients but all healed after further debridement. Recurrence of postoperative infection occurred to 2 patients and the infection control was achieved after the phase-I rescue surgery. Good outcomes without recurrence of infection were achieved after phase-II surgery. The postoperative follow-up at 1 year after phase-II surgery showed a statistically significant improvement of infection in blood indicators and reductions in VAS score, AOFAS ankle-hindfoot score and SF-36 score in comparison with those before surgery ( P<0.05). In addition to WBC, there were also significant differences in pairwise comparisons between each group at different time points ( P<0.05). Conclusion:In the treatment of post-traumatic calcaneal osteomyelitis with soft tissue defect, a combination of periosteal induction technique and sural neurovascular flap is beneficial to infection control, bone defect reconstruction, recovery of ankle function and improvement of quality of life.