1.Fourth investigation and analysis of the quality control situation in the critical care medicine of traditional Chinese medicine hospitals in Sichuan province
Jun CHEN ; Xingyue CHEN ; Kunlan LONG ; Rui YUAN ; Song ZHANG ; Xiaobin LI ; Xingmei ZHONG ; Kaichen ZHANG ; Peng DING ; Peiyang GAO
Chinese Journal of Integrated Traditional and Western Medicine in Intensive and Critical Care 2024;31(4):459-464
Objective To enhance the quality of medical services in the intensive care unit(ICU)of provincial traditional Chinese medicine(TCM)hospitals.Methods In November 2023,Sichuan Provincial Critical Care Medicine Quality Control Center of TCM launched the"quality control supervision project scoring standard for critical care medicine of TCM"to conduct quality control evaluation and business guidance for all TCM hospitals with independent ICU.The survey covered structural indicators,control indicators,participation of TCM,development of new technologies,and diagnosis and treatment programs for dominant diseases.Results In terms of structural indicators:a total of 110 TCM hospitals in the province have independent ICU,an increase of 1.12 times compared with 2019.The control indicators showed that the ICU patients admission rate was higher than that of the national ICU admission rate in 2017,and the admission rate of patients with acute physiology and chronic health evaluation Ⅱ(APACHEⅡ)score≥15 points increased.However,the mortality of ICU exceeded the national average.The implementation of core indicators had been significantly improved,but the incidence of outcome indicators such as ICU ventilator-associated pneumonia(VAP),ICU intravascular catheter-related bloodstream infection(CRBSI),and ICU catheter-related urinary tract infection(CAUTI)had increased since 2019,mainly in secondary hospitals.The average number of new technologies was about(5.5±3.4),the participation rate of TCM decreased,and the dominant diseases increased compared with 2019,mainly sepsis,respiratory failure and hemorrhagic stroke.Conclusions The number of ICU units in TCM hospitals at all levels in Sichuan province has grown rapidly,and key performance indicators have also improved compared to previous periods.However,greater efforts are still needed in preventing the occurrence rates of VAP,CRBSI,and CAUTI.There is a shortage of medical resources allocation,and the imbalance in regional medical resources and professional training remains an urgent issue to be addressed.Additionally,the participation rate of TCM and the dominant diseases need further enhancement.
2.Feasibility of X-ray field area optimization for Cyberknife image guidance
Rui ZHAO ; Jing ZHANG ; Xing-Xin GAO ; Zhong-Ze TIAN ; Xiao-Bo CAO ; Sha LI
Chinese Medical Equipment Journal 2024;45(11):49-53
Objective To investigate the effect of reducing the image-guided X-ray field area on the accuracy of Cyberknife radiotherapy,in order to provide a feasible method for achieving patient protection optimization.Methods Firstly,the spine-tracking,fiducial tracking and lung-tracking radiotherapy plans were formulated for the simulation phantom,and then image-guided full-field localization and position pre-setting were carried out for the simulation phantom,and the spine-tracking,fiducial tracking and lung-tracking radiotherapy plans were executed for the simulation phantom using a reduced lead block field area,respectively.Secondly,the radiotherapy accuracy of different radiotherapy plans was verified by end-to-end(E2E)software using new EBT films of the same batch as the base film.Finally,the changes of the simulation phantom were compared in terms of position pre-presetting error,radiotherapy accuracy and lead block field area.Results The spine-tracking and fiducial tracking radiotherapy plans had the translation errors not higher than 0.1 mm and the rotation errors not higher than 0.1°,which were comparable to the fluctuated conventional Cyberknife image-guided locating;the spine-tracking,fiducial tracking and lung-tracking radiotherapy plans had the lead block field radiotherapy accu-racies being 0.71,0.18 and 1.06 mm,respectively,which met the clinical requirements for Cyberknife radiotherapy;the lead block field areas of the spine-tracking,fiducial tracking and lung-tracking radiotherapy plans were reduced to 19.75%,29.28%and 12.71%of the full field area,respectively,and the efficacy for field area optimization was significant.Conclusion It's feasible to involve a reduced image-guided X-ray field area in Cyberknife radiotherapy,which contributes to optimizing radiation protection for the patients.[Chinese Medical Equipment Journal,2024,45(11):49-53]
3.Technical points of human use experience of ethnic medicine.
Zhong-Qi YANG ; Ya-Qin TANG ; Yan LING ; Yan-Ping DU ; Wei-An YUAN ; Chong ZOU ; Jian-Yuan TANG ; Si-Yuan HU ; Rui GAO ; Lei ZHANG
China Journal of Chinese Materia Medica 2023;48(5):1402-1406
Ethnic medicine has a rich history of application. Because of the large number of ethnic groups, wide geographical distribution, and unique medical systems in China, the research on the human use experience(HUE) of ethnic medicine should combine the characteristics of ethnic medicine, be based on practical experience, and respect folk practice and tradition. The clinical positioning of ethnic medicine should consider three factors, i.e., population region, dominant diseases, and clinical demand. We should consider the development of traditional preparations that meet the needs of ethnic regions and encourage the development of new drugs that can be popularized and used nationwide for the dominant diseases of ethnic medicines. Attention should be paid to the problems such as a large number of customary articles or substitutes of ethnic medicinal materials, the phenomena of foreign bodies with the same name and different names for the same substance, the different standards of medicinal materials, and the poor processing standards. The name, processing method, source, medicinal parts, and dosage of ethnic medicinal materials or decoction pieces should be determined, and resources should be carefully evaluated to ensure the safety of medicinal resources and ecology. The preparation of ethnic medicine is mostly in the form of pills, powder, ointment, etc., with simple processing technology. The problems of low-quality stan-dards of some preparations, different prescriptions with the same name, and inconsistent processing technology should be overcome, and the process route and main process parameters should be clarified to lay the foundation for the subsequent empirical research on HUE. In the collection and analysis of the HUE data of ethnic medicine, the core guiding ideology of "patient-centered" should be established, and the experience data of patients should be collected. The problems of weak links existing in the inheritance of ethnic medicine should be solved, and flexible and diverse methods should be adopted. Meanwhile, on the premise of complying with the requirements of the principles of medical ethics, we should respect the religion, culture, and customs of ethnic areas to obtain the key HUE information of ethnic medicine. On the basis of the patient preference information and differences in regional disease epidemiology, population characteristics, and medical practice, whether the HUE conclusions of ethnic medicine can be extrapolated to patients outside the region is evaluated from the aspects of clinical benefits, risk tolerance, risk acceptance, etc. The HUE research on ethnic medicine is carried out in a clear way to guide the research and development of new ethnic medicines.
Humans
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Medicine, Chinese Traditional
;
China
;
Reference Standards
;
Technology
;
Drugs, Chinese Herbal/therapeutic use*
4.Variation and interaction mechanism between active components in Rheum officinale and rhizosphere soil microorganisms under drought stress.
Feng-Pu XIE ; Nan WANG ; Jing GAO ; Gang ZHANG ; Zhong-Xing SONG ; Yuan-Yuan LI ; Ya-Li ZHANG ; Duo-Yi WANG ; Rui LI ; Mi-Mi LIU ; Zhi-Shu TANG
China Journal of Chinese Materia Medica 2023;48(6):1498-1509
To explore the changes and the reaction mechanisms between soil microecological environment and the content of secon-dary metabolites of plants under water deficit, this study carried out a pot experiment on the 3-leaf stage seedlings of Rheum officinale to analyze their response mechanism under different drought gradients(normal water supply, mild, moderate, and severe drought). The results indicated that the content of flavonoids, phenols, terpenoids, and alkaloids in the root of R. officinale varied greatly under drought stresses. Under mild drought stress, the content of substances mentioned above was comparatively high, and the content of rutin, emodin, gallic acid, and(+)-catechin hydrate in the root significantly increased. The content of rutin, emodin, and gallic acid under severe drought stress was significantly lower than that under normal water supply. The number of species, Shannon diversity index, richness index, and Simpson index of bacteria in the rhizosphere soil were significantly higher than those in blank soil, and the number of microbial species and richness index decreased significantly with the aggravation of drought stresses. In the context of water deficit, Cyanophyta, Firmicutes, Actinobacteria, Chloroflexi, Gemmatimonadetes, Streptomyces, and Actinomyces were the dominant bacteria in the rhizosphere of R. officinale. The relative content of rutin and emodin in the root of R. officinale was positively correlated with the relative abundance of Cyanophyta and Firmicutes, and the relative content of(+)-catechin hydrate and(-)-epicatechin gallate was positively correlated with the relative abundance of Bacteroidetes and Firmicutes. In conclusion, appropriate drought stress can increase the content of secondary metabolites of R. officinale from physiological induction and the increase in the association with beneficial microbe.
Rhizosphere
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Rheum
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Droughts
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Soil
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Catechin
;
Emodin
;
Bacteria/metabolism*
;
Water/metabolism*
;
Firmicutes
;
Soil Microbiology
5.Comparison of clinical efficacy between closed reduction combined with semi-circular external fixator and minimally invasive percutaneous plate osteosynthesis (MIPPO) in the treatment of middle and distal tibia fractures.
Min-Rui FU ; Chang-Long SHI ; Jing-Hua GAO ; Lu-Guang LI ; Jian-Guo LI ; Yong-Zhong CHENG ; Zhong-Kai WU
China Journal of Orthopaedics and Traumatology 2023;36(9):815-820
OBJECTIVE:
To compare the clinical efficacy between closed reduction combined with semi-circular external fixator and minimally invasive percutaneous plate osteosynthesis (MIPPO) in the treatment of middle anddistal tibia fractures.
METHODS:
The clinical data of sixty patients with middle and distal tibia fractures admitted between January 2019 and November 2022, were retrospectively analyzed. These patients were categorized into external fixation group (n=30) and internal fixation group (n=30). There were 18 males and 12 females in the external fixation group, with an average age of (49.29±2.35) years old. Among them, 14 patients presented with fractures on the left side, and 16 patients presented with fractures on the right side. Closed reduction, arched wire, and semi-circular external fixator were used for treatment. There were 20 males and 10 females in the internal fixation group, with an average age of (48.96±1.87) years old. Among them, 15 patients presented with fractures on the left side, and 15 patients presented with fractures on the right side. MIPPO technique was used for the treatment. Perioperative parameters, including time injury to surgery, surgical duration, incision length, intraoperative bleeding, time to active activity, and incision healing level, were compared between the two groups. Clinical outcomes were also assessed, including Johner-Wruhs scores, time to minimum pain-adapted full weight-bearing, visual analog scale (VAS), SF-36 scale, and complications.
RESULTS:
The external fixation group exhibited a significantly shorter incision length (1.36±0.86) cm and lower intraoperative bleeding (10.83±5.73) ml compared to the internal fixation group (12.74±3.12) cm and (86.47±8.90) ml, respectively(P<0.05). The postoperative active activity time (1.50±0.54) days and minimum pain-adapted full weight-bearing activity time(108.87±3.43) days in the external fixation group were slightly delayed than the internal fixation group(1.15±0.98) days and (105.27±3.68) days, respectively(P<0.05). Over a mean postoperative follow-up duration of (6.23±1.89) months, both groups showed improved VAS and SF-36 scale scores. There were no statistically significant differences in VAS and SF-36 scale scores 1, 3, 6 months post-operatively between the two groups(P>0.05). The intraoperative surgical time in the external fixation group (35.42±9.31) minutes was shorter than that in the internal fixation group(74.22±7.81) minutes (P<0.05). There was no intraoperative vascular or nerve injury, nor postoperative skin necrosis in the external fixation group. However, skin necrosis was observed in 6 patientsin the internal fixation group, representing a statistically significant difference (P<0.05).
CONCLUSION
Both external fixation and plate internal fixation are effective methods for the treatment of middle and distal tibia fractures. External fixation exhibits the advantage of less surgical trauma and a lower incidence of complications.
Female
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Male
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Humans
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Middle Aged
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Retrospective Studies
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Tibia
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Treatment Outcome
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Ankle Fractures
;
Tibial Fractures/surgery*
;
External Fixators
;
Pain
;
Necrosis
6.The efficacy of radiotherapy based combined therapy for unresectable locally invasive bladder cancer and its associated factors analysis.
Si Jin ZHONG ; Jun Jun GAO ; Ping TANG ; Yue Ping LIU ; Shu Lian WANG ; Hui FANG ; Jing Ping QIU ; Yong Wen SONG ; Bo CHEN ; Shu Nan QI ; Yuan TANG ; Ning Ning LU ; Hao JING ; Yi Rui ZHAI ; Ai Ping ZHOU ; Xin Gang BI ; Jian Hui MA ; Chang Ling LI ; Yong ZHANG ; Jian Zhong SHOU ; Nian Zeng XING ; Ye Xiong LI
Chinese Journal of Oncology 2023;45(2):175-181
Objective: Retrospective analysis of the efficacy and influencing factors of bladder preservation integrated therapy for unresectable invasive bladder cancer confined to the pelvis was done, also including the bladder function preservation and adverse effects analysis. Methods: Sixty-nine patients with unresectable locally invasive bladder cancer who received radiotherapy-based combination therapy from March 1999 to December 2021 at our hospital were selected. Among them, 42 patients received concurrent chemoradiotherapy, 32 underwent neoadjuvant chemotherapyand 43 with transurethral resection of bladder tumors (TURBT) prior to radiotherapy. The late adverse effect of radiotherapy, preservation of bladder function, replase and metastasis and survival were followed-up. Cox proportional hazards models were applied for the multifactorial analysis. Results: The median age was 69 years. There were 63 cases (91.3%) of uroepithelial carcinoma, 64 of stage Ⅲ and 4 of stage Ⅳ. The median duration of follow-up was 76 months. There were 7 grade 2 late genito urinary toxicities, 2 grade 2 gastrointestinal toxicities, no grade 3 or higher adverse events occurred. All patients maintained normal bladder function, except for 8 cases who lost bladder function due to uncontrolled tumor in the bladder. Seventeen cases recurred locally. There were 11 cases in the concurrent chemoradiotherapy group with a local recurrence rate of 26.2% (11/42) and 6 cases in the non-concurrent chemoradiotherapy group with a local recurrence rate of 22.2% (6/27), and the difference in local recurrence rate between the two groups was not statistically significant (P=0.709). There were 23 cases of distant metastasis (including 2 cases of local recurrence with distant metastasis), including 10 cases in the concurrent chemoradiotherapy group with a distant metastasis rate of 23.8% (10/42) and 13 cases in the non-concurrent chemoradiotherapy group with a distant metastasis rate of 48.1% (13/27), and the distant metastasis rate in the non-concurrent chemoradiotherapy group was higher than that in the concurrent chemoradiotherapy group (P=0.036). The median 5-year overall survival (OS) time was 59 months and the OS rate was 47.8%. The 5-year progression-free survival (PFS) time was 20 months and the PFS rate was 34.4%. The 5-year OS rates of concurrent and non-concurrent chemoradiotherapy group were 62.9% and 27.6% (P<0.001), and 5-year PFS rates were 45.4% and 20.0%, respectively (P=0.022). The 5-year OS rates of with or without neoadjuvant chemotherapy were 78.4% and 30.1% (P=0.002), and the 5-year PFS rates were 49.1% and 25.1% (P=0.087), respectively. The 5-year OS rates with or without TURBT before radiotherapy were 45.5% and 51.9% (P=0.233) and the 5-year PFS rates were 30.8% and 39.9% (P=0.198), respectively. Multivariate Cox regression analysis results showed that the clinical stage (HR=0.422, 95% CI: 0.205-0.869) was independent prognostic factor for PFS of invasive bladder cancer. The multivariate analysis showed that clinical stages (HR=0.278, 95% CI: 0.114-0.678), concurrent chemoradiotherapy (HR=0.391, 95% CI: 0.165-0.930), neoadjuvant chemotherapy (HR=0.188, 95% CI: 0.058-0.611), and recurrences (HR=10.855, 95% CI: 3.655-32.638) were independent prognostic factors for OS of invasive bladder cancer. Conclusion: Unresectable localized invasive bladder cancer can achieve satisfactory long-term outcomes with bladder-preserving combination therapy based on radiotherapy, most patients can retain normal bladder function with acceptable late adverse effects and improved survival particularly evident in patients with early, concurrent chemoradiotherapy and neoadjuvant chemotherapy.
Humans
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Aged
;
Treatment Outcome
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Retrospective Studies
;
Combined Modality Therapy
;
Chemoradiotherapy/methods*
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Urinary Bladder Neoplasms/radiotherapy*
;
Antineoplastic Combined Chemotherapy Protocols/therapeutic use*
;
Neoplasm Staging
7.Fortify clinical advantages and promote innovative development: comparison of the Chinese Colorectal Cancer Surgery Database with foreign databases.
Jun Hao ZHANG ; Rui Qing LIU ; Yuan GAO ; Hong Wei YAO ; Ying Chi YANG ; Zhong Tao ZHANG ; Yun LU
Chinese Journal of Surgery 2023;61(5):362-367
With the continuous development of evidence-based medicine, increasing attention has been paid to the construction of a large medical database to ensure a source of high quality real-world data. The Chinese Medical Association Colorectal Surgery Group created the Chinese Colorectal Cancer Surgery Database (CCCD), whose objective is to promote the development of colorectal surgery and improve patient prognosis with evidence-based medicine theory. Compared to major databases around the world, CCCD contains more comprehensive information on colorectal cancer surgical cases, recording the main epidemiological characteristics and detailed surgical information, but perioperative treatment data still need to be strengthened. It is necessary to continuously expand the coverage, enrich perioperative data and strengthen data, quality control. In the future, CCCD is expected to play a role in promoting homogenization of medical services, promoting smooth and effective graded diagnosis and treatment, giving full role to the characteristics of each center to achieve integrated development, and connecting real-world data and artificial intelligence.
8. Mechanism of electroacupuncture regulating the ligand pathway of tyrosine kinase receptor in improving vascular dementia
Xia LI ; Shi-Jie ZHU ; Zhong-Sheng TANG ; Ya-Fei LUO ; Rui-Juan FAN ; Gao-Yu XIE ; Yun-Fang KOU ; Ying LU
Acta Anatomica Sinica 2023;54(6):689-694
Objective To observe the potential mechanism of electroacupuncture regulating the erythropoietin-producing hepatocellular receptor B2/erythropoietin-producing hepatocellular receptor-interacting B2/big mitogen-activated protein kinase 1(EphB2/EphrinB2/BMK1) signaling pathway to improve neural damage in vascular dementia rats. Methods Eighty SD male adult rats were randomly divided into a sham surgery group, a model group, a non acupoint electroacupuncture group, a nimodipine group, and an electroacupuncture three needle group. The vascular dementia rat model was made by the modified Pulsinelli four vessel occlusion method. After grouping, the rats in each group were subjected to water maze test, HE staining, Nissl staining, and transmission electron microscopy(TEM) to observe the pathological changes in the hippocampal CA1 area, and the expression of EphB2 and BMK1 in the hippocampal CA1 area was detected by immunohistochemistry; Detection of EphB2 and BMK1 protein expression in rat hippocampal CA1 region was detected by Western blotting. Results Compared with the model group, the escape latency of vascular dementia rats treated with electroacupuncture and nimodipine decreased (P<0.05), while the number of crossing platforms significantly increased (P<0.05); The result of HE staining, Nissl staining and TEM showed that compared with the model group, the neurons in hippocampal CA1 area of rats in the EA Zhisanzhen group and nimodipine group were arranged orderly, and the morphology and structure of cells and organelle were complete; Immunohistochemical method and Western blotting showed that the expression of EphB2 and BMK1 in the CA1 region of hippocampus in the model group was significantly lower than that in the sham surgery group (P<0.05); Compared with the model group, the expression of EphB2 and BMK1 in the hippocampal CA1 region of rats in the electroacupuncture Zhisanzhen group significantly increased (P<0.05), while the expression of EphB2 and BMK1 in the hippocampal CA1 region of rats in the non acupoint electroacupuncture group was not statistically significant (P>0.05). Compared with the nimodipine group, the expression of EphB2 and BMK1 in the hippocampal CA1 region of rats in the electroacupuncture Zhisanzhen group significantly increased (P<0.05). Conclusion Electroacupuncture may improve the damage of hippocampal neurons in vascular dementia rats by increasing the expression of EphB2 and BMK1 in the CA1 region of the hippocampus, thereby improving the learning and memory of vascular dementia rats.
9.Safety and efficacy of the early administration of levosimendan in patients with acute non-ST-segment elevation myocardial infarction and elevated NT-proBNP levels: An Early Management Strategy of Acute Heart Failure (EMS-AHF).
Feng XU ; Yuan BIAN ; Guo Qiang ZHANG ; Lu Yao GAO ; Yu Fa LIU ; Tong Xiang LIU ; Gang LI ; Rui Xue SONG ; Li Jun SU ; Yan Ju ZHOU ; Jia Yu CUI ; Xian Liang YAN ; Fang Ming GUO ; Huan Yi ZHANG ; Qing Hui LI ; Min ZHAO ; Li Kun MA ; Bei An YOU ; Ge WANG ; Li KONG ; Jian Liang MA ; Xin Fu ZHOU ; Ze Long CHANG ; Zhen Yu TANG ; Dan Yu YU ; Kai CHENG ; Li XUE ; Xiao LI ; Jiao Jiao PANG ; Jia Li WANG ; Hai Tao ZHANG ; Xue Zhong YU ; Yu Guo CHEN
Chinese Journal of Internal Medicine 2023;62(4):374-383
Objectives: To investigated the safety and efficacy of treating patients with acute non-ST-segment elevation myocardial infarction (NSTEMI) and elevated levels of N-terminal pro-hormone B-type natriuretic peptide (NT-proBNP) with levosimendan within 24 hours of first medical contact (FMC). Methods: This multicenter, open-label, block-randomized controlled trial (NCT03189901) investigated the safety and efficacy of levosimendan as an early management strategy of acute heart failure (EMS-AHF) for patients with NSTEMI and high NT-proBNP levels. This study included 255 patients with NSTEMI and elevated NT-proBNP levels, including 142 males and 113 females with a median age of 65 (58-70) years, and were admitted in the emergency or outpatient departments at 14 medical centers in China between October 2017 and October 2021. The patients were randomly divided into a levosimendan group (n=129) and a control group (n=126). The primary outcome measure was NT-proBNP levels on day 3 of treatment and changes in the NT-proBNP levels from baseline on day 5 after randomization. The secondary outcome measures included the proportion of patients with more than 30% reduction in NT-proBNP levels from baseline, major adverse cardiovascular events (MACE) during hospitalization and at 6 months after hospitalization, safety during the treatment, and health economics indices. The measurement data parameters between groups were compared using the t-test or the non-parametric test. The count data parameters were compared between groups using the χ² test. Results: On day 3, the NT-proBNP levels in the levosimendan group were lower than the control group but were statistically insignificant [866 (455, 1 960) vs. 1 118 (459, 2 417) ng/L, Z=-1.25,P=0.21]. However, on day 5, changes in the NT-proBNP levels from baseline in the levosimendan group were significantly higher than the control group [67.6% (33.8%,82.5%)vs.54.8% (7.3%,77.9%), Z=-2.14, P=0.03]. There were no significant differences in the proportion of patients with more than 30% reduction in the NT-proBNP levels on day 5 between the levosimendan and the control groups [77.5% (100/129) vs. 69.0% (87/126), χ²=2.34, P=0.13]. Furthermore, incidences of MACE did not show any significant differences between the two groups during hospitalization [4.7% (6/129) vs. 7.1% (9/126), χ²=0.72, P=0.40] and at 6 months [14.7% (19/129) vs. 12.7% (16/126), χ²=0.22, P=0.64]. Four cardiac deaths were reported in the control group during hospitalization [0 (0/129) vs. 3.2% (4/126), P=0.06]. However, 6-month survival rates were comparable between the two groups (log-rank test, P=0.18). Moreover, adverse events or serious adverse events such as shock, ventricular fibrillation, and ventricular tachycardia were not reported in both the groups during levosimendan treatment (days 0-1). The total cost of hospitalization [34 591.00(15 527.46,59 324.80) vs. 37 144.65(16 066.90,63 919.00)yuan, Z=-0.26, P=0.80] and the total length of hospitalization [9 (8, 12) vs. 10 (7, 13) days, Z=0.72, P=0.72] were lower for patients in the levosimendan group compared to those in the control group, but did not show statistically significant differences. Conclusions: Early administration of levosimendan reduced NT-proBNP levels in NSTEMI patients with elevated NT-proBNP and did not increase the total cost and length of hospitalization, but did not significantly improve MACE during hospitalization or at 6 months.
Male
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Female
;
Humans
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Aged
;
Natriuretic Peptide, Brain
;
Simendan/therapeutic use*
;
Non-ST Elevated Myocardial Infarction
;
Heart Failure/drug therapy*
;
Peptide Fragments
;
Arrhythmias, Cardiac
;
Biomarkers
;
Prognosis
10.The curative effect and mechanism of magnetic hyperthermia in the treatment of knee osteoarthritis
Fei GAO ; Longlong DU ; Tong WANG ; Xuefeng LI ; Yuke ZHONG ; Qimeng GAO ; Rui CHEN ; Puwei YUAN ; Lingyun ZHAO
Journal of Xi'an Jiaotong University(Medical Sciences) 2023;44(5):784-793
【Objective】 We combined the concept of traditional medicine with magnetic induction technology, originally brought up the research concept of magnetic hyperthermia to cure KOA, explored the mechanism and constructed a new treatment of KOA with modern medical features. 【Methods】 Through establishing a primary KOA model in rats and constructing ferrimagnetic vortex domain iron oxide nanorings (FVIOs) as a platform for highly efficient magnetic hyperthermia agent, the lesions of KOA were heated accurately under the low-intensity magnetic field. We confirmed the curative effect through the results of pain perception, histopathology, knee joint morphology and microscopic bone structure and the content of serum inflammatory factor, to study the therapeutic mechanism of magnetic hyperthermia for KOA. 【Results】 Compared with the model group, the recovery of mechanical pain threshold after magnetic hyperthermia improved by approximately 48.9%; the degree of hyperemia and edema of joint capsule and synovial tissue and the wear degree of joint cartilage surface, were significantly reduced; the Mankin and OARSI scores decreased by about 33% and 20%, respectively; the MicroCT results indicated that the degree of hardening of the subchondral bone also improved; the expression of inflammatory factors in the serum was reduced. 【Conclusion】 In this study, we utilized the FVIOs as a high-efficiency magnetic hyperthermia platform for the treatment of KOA. The efficacy of magnetic hyperthermia on KOA is clarified, and the mechanism is related to the inhibition of inflammatory factors.

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