Objective:To evaluate the clinical effect of transforaminal endoscopic spine system (TESSYS) technique in treating single-level lumbar spinal stenosis (LSS) based on computed tomography (CT) imaging and traumatic stress indicators. Methods:A total of 112 patients with single-level LSS admitted to The Third Hospital of Qinhuangdao from June 2019 to June 2021 were selected,and they were divided into observation group and control group by random number table method,with 56 cases in each group. The observation group was treated with TESSYS technique,and the control group was treated with "broad easy immediate surgery (BEIS)" technique of intervertebral foramen scope. The indicators of CT imaging of spinal canal area and protrusion ratio,as well as traumatic stress indicators included lactate dehydrogenase (LDH),myoglobin (MYO) and cortisol (COR),of two groups were compared before and 1 week after surgery. Oswestry Disability Index (ODI),Visual Analogue Scale (VAS) score and Japanese Orthopaedic Association (JOA) Scores were compared between the two groups. Excellent rates of treatment and postoperative complications of two groups were compared at the 6 th month after surgery. Results:The average hospital stay and operation time of observation group were respectively (4.29±1.08)d and (93.53±22.01)min,which were significantly shorter than (6.61±1.72)d and (112.29±26.68)min of control group,and the intraoperative blood loss of observation group was (30.15±8.26) ml,which was shorter than that (41.35±11.58) ml of control group,and the differences of them between two groups (t=8.548,4.059,5.892,P<0.05),respectively. At the 1st week after surgery,the ODI and VAS scores of observation group were lower than those of control group,and the JOA score was higher than that of control group,and the differences of them between two groups were significant (t=9.443,t=8.969,6.084,P<0.05),respectively. At the 3rd month after surgery,the ODI and VAS scores of observation group were respectively lower than those of control group,and JOA score of observation group was higher than that of control group,and the differences of them were significant (t=9.706,3.753,5.894,P<0.05),respectively. The rate of excellent and good treatment of observation group was 94.64％,which was higher than that (80.36％) of control group,and the differences of them between the two groups were statistically significant (t=5.225,P<0.05). At the 1st week after surgery,the vertebral canal area of observation group was larger than that of control group,and the ratio of protrusion invasion was less than that of control group,and the differences of them between the two groups were statistically significant (t=3.404,5.578,P<0.05),respectively. At the 1st d after surgery,the serum LDH,MYO and COR levels of observation group were lower than those of control group,and the differences of them between two groups were statistically significant (t=7.570,9.687,5.242,P<0.05),respectively. At the 3rd d after surgery,the serum LDH,MYO and COR levels of observation group were respectively than those of control group,and the differences of them between two groups were significant (t=6.856,9.729,2.744,P<0.05). There was no significant difference in complication rate between the two groups (P>0.05). Conclusion:Compared with BEIS technique,TESSYS technique has the advantages of less trauma,faster postoperative recovery and higher excellent and good rate in treating single-segment LSS,which can alleviate stress reaction of early postoperative trauma. Its comprehensively clinical efficacy is ideal.

OBJECTIVE To carry out regular monitoring of carbapenem-resistant Klebsiella pneumoniae(CRKP)contamination status in the environment of intensive care unit(ICU)and take targeted prevention and control measures so as to reduce the incidence of hospital-associated infections with multidrug-resistant organisms(MDROs).METHODS The surfaces of surroundings of the patients who were colonized and infected with CRKP in the ICU of grade A tertiary hospital of Shanghai and the hands of relevant staff were sampled by stages from Jan 1,2021 to Jun 30,2024.The distribution of the CRKP strains in the surroundings were analyzed according to the locations positive for CRKP,and the disinfection measures were accordingly and continuously modified.The trend of isolation rate of CRKP strains from the ICU patients was analyzed during the time period when the measures were implemented.RESULTS Totally 266 environmental samples were collected during the baseline period(from Jan.1 2021 to Dec.31 2021),265 during intervention period(from Jan.1 2022 to Dec.31 2023),274 during con-solidation period(from Jan.1 to Jun.30 2024);the isolation rates of the CRKP strains were 4.51％,4.91％and 3.65％,respectively.The isolation rate of the strains was highest from the bed unit(10.40％),followed by the article for public use(6.74％),articles used by health care workers(2.98％)and diagnosis and treatment arti-cles(1.91％).The isolation rate of CRKP of the patients was 24.75％during the baseline period,15.48％during the intervention period,5.69％during the consolidation period,showing a continuously downward trend(x2=30.330,P＜0.001).CONCLUSION It is necessary to regularly carry out the environmental monitoring of CRKP strains,seek for the weak links of environmental disinfection and implement the intensified prevention and control measures so as to reduce the incidence of CRKP infection,which may provide theoretical bases for effective control of the CRKP strains.

Objective:To evaluate the clinical effect of transforaminal endoscopic spine system (TESSYS) technique in treating single-level lumbar spinal stenosis (LSS) based on computed tomography (CT) imaging and traumatic stress indicators. Methods:A total of 112 patients with single-level LSS admitted to The Third Hospital of Qinhuangdao from June 2019 to June 2021 were selected,and they were divided into observation group and control group by random number table method,with 56 cases in each group. The observation group was treated with TESSYS technique,and the control group was treated with "broad easy immediate surgery (BEIS)" technique of intervertebral foramen scope. The indicators of CT imaging of spinal canal area and protrusion ratio,as well as traumatic stress indicators included lactate dehydrogenase (LDH),myoglobin (MYO) and cortisol (COR),of two groups were compared before and 1 week after surgery. Oswestry Disability Index (ODI),Visual Analogue Scale (VAS) score and Japanese Orthopaedic Association (JOA) Scores were compared between the two groups. Excellent rates of treatment and postoperative complications of two groups were compared at the 6 th month after surgery. Results:The average hospital stay and operation time of observation group were respectively (4.29±1.08)d and (93.53±22.01)min,which were significantly shorter than (6.61±1.72)d and (112.29±26.68)min of control group,and the intraoperative blood loss of observation group was (30.15±8.26) ml,which was shorter than that (41.35±11.58) ml of control group,and the differences of them between two groups (t=8.548,4.059,5.892,P<0.05),respectively. At the 1st week after surgery,the ODI and VAS scores of observation group were lower than those of control group,and the JOA score was higher than that of control group,and the differences of them between two groups were significant (t=9.443,t=8.969,6.084,P<0.05),respectively. At the 3rd month after surgery,the ODI and VAS scores of observation group were respectively lower than those of control group,and JOA score of observation group was higher than that of control group,and the differences of them were significant (t=9.706,3.753,5.894,P<0.05),respectively. The rate of excellent and good treatment of observation group was 94.64％,which was higher than that (80.36％) of control group,and the differences of them between the two groups were statistically significant (t=5.225,P<0.05). At the 1st week after surgery,the vertebral canal area of observation group was larger than that of control group,and the ratio of protrusion invasion was less than that of control group,and the differences of them between the two groups were statistically significant (t=3.404,5.578,P<0.05),respectively. At the 1st d after surgery,the serum LDH,MYO and COR levels of observation group were lower than those of control group,and the differences of them between two groups were statistically significant (t=7.570,9.687,5.242,P<0.05),respectively. At the 3rd d after surgery,the serum LDH,MYO and COR levels of observation group were respectively than those of control group,and the differences of them between two groups were significant (t=6.856,9.729,2.744,P<0.05). There was no significant difference in complication rate between the two groups (P>0.05). Conclusion:Compared with BEIS technique,TESSYS technique has the advantages of less trauma,faster postoperative recovery and higher excellent and good rate in treating single-segment LSS,which can alleviate stress reaction of early postoperative trauma. Its comprehensively clinical efficacy is ideal.

OBJECTIVE To carry out regular monitoring of carbapenem-resistant Klebsiella pneumoniae(CRKP)contamination status in the environment of intensive care unit(ICU)and take targeted prevention and control measures so as to reduce the incidence of hospital-associated infections with multidrug-resistant organisms(MDROs).METHODS The surfaces of surroundings of the patients who were colonized and infected with CRKP in the ICU of grade A tertiary hospital of Shanghai and the hands of relevant staff were sampled by stages from Jan 1,2021 to Jun 30,2024.The distribution of the CRKP strains in the surroundings were analyzed according to the locations positive for CRKP,and the disinfection measures were accordingly and continuously modified.The trend of isolation rate of CRKP strains from the ICU patients was analyzed during the time period when the measures were implemented.RESULTS Totally 266 environmental samples were collected during the baseline period(from Jan.1 2021 to Dec.31 2021),265 during intervention period(from Jan.1 2022 to Dec.31 2023),274 during con-solidation period(from Jan.1 to Jun.30 2024);the isolation rates of the CRKP strains were 4.51％,4.91％and 3.65％,respectively.The isolation rate of the strains was highest from the bed unit(10.40％),followed by the article for public use(6.74％),articles used by health care workers(2.98％)and diagnosis and treatment arti-cles(1.91％).The isolation rate of CRKP of the patients was 24.75％during the baseline period,15.48％during the intervention period,5.69％during the consolidation period,showing a continuously downward trend(x2=30.330,P＜0.001).CONCLUSION It is necessary to regularly carry out the environmental monitoring of CRKP strains,seek for the weak links of environmental disinfection and implement the intensified prevention and control measures so as to reduce the incidence of CRKP infection,which may provide theoretical bases for effective control of the CRKP strains.

Objective:To systematically evaluate the effectiveness and feasibility of aerobic exercise intervention in schizophrenia patients.Methods:Randomized controlled trials on exercise interventions for patients with schizophrenia were searched in eight databases from built up to March 2023, including China National Knowledge Infrastructure (CNKI), VIP Database for Chinese Technical Periodicals (VIP), WanFang Data, China Biomedical Literature Database, PubMed, Cochrane Library, EMBASE and Web of Science. The positive and negative symptom scale (PANSS) and its sub-scales were used as primary outcome indicators, and the negative symptom scale (SANS) and body mass index (BMI) were used as secondary indicators, and Meta-analysis was performed using R 4.1.0 and Stata 14.0.Results:Forty-seven studies including 3 139 patients with schizophrenia were included. Results of a network Meta-analysis based on 24 studies showed that aerobic exercise may be the most effective measure for reducing total PANSS scores in patients with schizophrenia. Compared to conventional treatment, combining aerobic exercise intervention improved patients' PANSS total score (MD= -5.09, 95% CI: -5.90~-4.28), SANS (MD= -12.17, 95% CI: -14.25~-10.10), and BMI (MD=-1.59, 95% CI: -1.93~-1.25). Meanwhile, subgroup analysis showed that 2 months of intervention was more appropriate (MD=-6.12, 95% CI: -7.22~-5.02) and the weekly total exercise time for 140-260 min was more appropriate (MD=-8.59, 95% CI: -12.93~-4.25) in terms of total PANSS score. The adherence rates between the trial and control groups showed no significant difference between the aerobic exercise intervention combined with conventional treatment and conventional treatment alone( P>0.05). Conclusion:Aerobic exercise intervention is an effective measure to relieve the symptoms of schizophrenia patients and has good compliance among inpatients.

Objective: To investigate the clinical features, diagnosis, occurrence sequence and clonal origin of chronic lymphocytic leukemia complicated with multiple myeloma. Methods: The diagnosis and treatment of one patient with multiple myeloma and chronic lymphocytic leukemia who was admitted to the First Hospital of Jilin University in May 2018 was retrospectively analyzed, and the related literatures were reviewed. Results: This patient began with lumbosacral pain, and he was diagnosed as chronic lymphocytic leukemia complicated with multiple myeloma after bone marrow aspiration, flow cytometry, and blood and urine immunofixation electrophoresis. It is recommended that Rd (lenalidomide + dexamethasone) or MPV (melphalan + prednisone + bortezomib) regimen, but the patient did not receive chemotherapy and died of infectious diarrhea 1 month later. Conclusions The occurrence of multiple myeloma and chronic lymphoblastic leukemia may originate from the same clone or different new clone. It is very rare that multiple myeloma and chronic lymphoblastic leukemia can co-occur. Therapeutic options tend to be more aggressive multiple myeloma-based regimen.

Objective: To evaluate the prognostic value of kinetic changes in minimal residual disease (MRD) status, as well as its relationship with risk stratification, therapeutic response and treatment in patients with newly-diagnosed multiple myeloma (MM) . Methods: A total of 135 patients with newly-diagnosed MM were screened, and 105 patients who achieved VGPR or more as the best responses were included into this study. The MRD status was determined by multiparameter flow cytometry (MFC) at multiple intervals after two cycles of treatment until clinical relapse, death, or last follow-up. The statistical methods included Kaplan-Meier analysis, Cox regression, etc. Results: ①In all 135 patients, 57.8% (78/135) patients achieved MRD negativity (MRD^-) after treatment. In 105 patients who achieved VGPR and thus included in this study, the MRD^- rate was 72.4% (76/105) , with a median interval of 3 months from starting treatment to achievement of MRD^- status. ②The 2-year PFS rate of patients with MRD^- status was significantly higher than that of MRD⁺ status (62.2% vs 41.3%, P=0.001) , while MRD persistence (MRD⁺) was an independent factor for poor prognosis (multivariate analysis for PFS: P=0.044, HR=3.039, 95%CI 1.029-8.974) . ③Loss of MRD^- status (i.e., MRD reappearance) showed inferior outcomes compared with MRD sustained negative ones, the PFS was 18 months versus not reach (P<0.001) and the OS was not reach for both (P=0.002) . ④The 2-year PFS and OS rates of patients with duration of MRD^-status≥12 months were significantly higher than those of the control group (PFS: 77.7% vs 36.7%, P<0.001; OS: 96.4% vs 57.9%, P<0.001 respectively) . Duration of MRD^- status was associated with a marked reduction in risk of relapse or death (univariate analysis for PFS: P<0.001, HR=0.865, 95%CI 0.815-0.918; for OS: P=0.001, HR=0.850, 95%CI 0.741-0.915 respectively) . ⑤Moreover, even in patients carrying high-risk cytogenetic abnormalities (CA) or ineligible for ASCT, MRD negativity remained its prognostic value to predict PFS (high-risk CA medianPFS: not reach vs 19 months, P=0.006; ineligible for ASCT medianPFS: not reach vs 25 months, P=0.052 respectively) . ⑥Last, treatment with the bortezomib-based regimens contributed to prolonged MRD^- duration (median MRD^- duratio: 25 months vs 10 months, P=0.034) . Conclusion Our findings supported MRD⁺ status as an independent poor prognostic factor in MM patients, which implicated that duration of MRD^- status also played a significant role in evaluation of prognosis, while loss of MRD^-status might serve as an early biomarker for relapse. Therefore, monitoring of MRD kinetics might more precisely predict prognosis, as well as guide treatment decision, especially for when to start retreatment in relapsed patients.

Objective: To investigate the effect of 1q21 amplification (1q) on the therapeutic response and prognosis of bortezomib(Btz) in the treatment of newly diagnosed multiple myeloma (MM) patients. Methods: A total of 180 newly diagnosed MM were included for analyses of clinical characteristics, cytogenetics, objective response rate (ORR), progression-free survival (PFS) and overall survival (OS), retrospectively. Gene expression profiling (GEP) was analyzed using publicly available R2 platform. Results: ① In 180 patients, 1q was found in 51.1% cases. Of them, 174 patients had complete follow-up data, including 88 cases with 1q and 86 without 1q (non-1q). ②Incidence of 1q was positively associated with percentage of IGH rearrangement (72.2%, P=0.017) and 1p deletion (1p) (27.8%, P=0.040). ③ The median PFS was 15.0 and 20.3 months for the 1q group and non-1q group, and the median OS was 29.4 and 44.0 months, respectively. Both PFS and OS of 1q group was significantly shorter than those of the non-1q group (P=0.029 and 0.038, respectively). Multivariate analysis further revealed that 1q was an independent prognostic factor for both PFS (HR=1.910, 95% CI 1.105-3.303, P=0.020) and OS (HR=2.353, 95% CI 1.090-5.078, P=0.029). ④ In 91 evaluable cases with 1q, very good partial remission (VGPR) rate was higher after treatment with Btz than those without Btz (62.1% vs 40.0%, P=0.032). Of note, the patients with 1q who received auto-HSCT after induction with Btz had significantly longer PFS than those without auto-HSCT (19 months vs 13 months, P=0.048). ⑤GEP analysis revealed that 1q21 amplification predominantly up-regulated expression of >50% genes within 1q21 region, and also altered expression of 28% genes in chromosome 1 and 10% genes in whole genome, particularly related to DNA repair and cell cycle. Conclusions 1q is an independent adverse prognostic factor in patients with newly diagnosed MM. It is often associated with 1p deletion and IGH rearrangement. Patients with 1q respond well to Btz-based regimen, but they fail to gain long-term benefit from this treatment itself. However, auto-HSCT following Btz induction might improve survival of patients with 1q, suggesting a potential strategy to treat this high-risk subset of MM. GEP analysis warrants further attention in understanding the mechanisms underlying the high-risk of 1q.

Objective To assess the mental health status of the pregnant women with missed abor-tion, as well as related influencing factors, and to provide the basis for mental nursing. Methods 100 pregnant women with missed abortion were chosen as the observation group by convenience sampling, while other 100 normal pregnant women as the control group. The mental state of the pregnant women in both groups was evaluated by using symptom checklist-90 (SCL-90), the results of which were then studied in contrast using t test and variance analysis. Results The total scores and the average scores of pregnant women in the observation group were significantly higher than those in the control group. The mental health status of pregnant women with missed abortion was influenced by age, education degree, and the times of pregnancy. Conclusions There are significant mental health problems in pregnant women with missed abortion, to which should be paid much attention. And the psychological counseling should be carried out in time in case of detrimental influences in treatment, rehabilitation, and next pregnancy.

Objective To explore if the occupational exposure to low dose thorium could induce adaptive response in peripheral lymphocytes.Methods 40 individuals.who exposed to thorium and rare earth mixed dust(exposure group) or control in Baotou Steel Plant, were selected, and chromosome aberrations were analyzed.Then the peripheral blood samples were irradiated in vitro with 2 Gy60Co γ-rays,and unstable chromosome aberration or DNA stand breakage analysis using single cell gel electrophoresis was performed. Results The dicentrics before 2 Gy exposure in exposure group was higher than that in control(P>0.05). But the dicentries after 2 Gy exposure in exposure group was lower than that in control,but not significantly (P>0.05).The tricentrics in exposure group was significantly lower than that in control(U=3.1622, 0.0ol