Objective: To investigate the incidence and associated factors of spinal curvature disorders among primary and middle school students in Hohhot, so as to provide reference for relevant prevention strategies. Methods: According to the monitoring and intervention work of students common diseases in Inner Mongolia Autonomous, 13 586 primary and middle school students in Hohhot were selected by random sampling method to carry out scoliosis examination in September 2021. Results: A total of 538( 4.0% ) students were found to have spinal curvature disorder. Multivariate Logistic regression analysis showed that monitoring site, phases of studying, and persistent back pain in the past 1 month were associated of spinal curvature disorder in primary and middle school students ( OR =0.33, 1.74, 1.28, 1.51, P <0.05). Conclusion Spinal curvature disorder is relatively common in primary and middle school students in Hohhot. Effective measures should be taken to reduce the burden of spinal curvature disorders in primary and middle school students.

Objective: To analyze the prevalence and trend of myopia among children and adolescents in Inner Mongolia from 2019 to 2021，so as to provide a reference for making scientific and effective prevention and controlling measures of myopia. Methods: By using the stratified random cluster sampling method, 555 093 children and adolescents were selected from 12 professional institutions in league cities of the whole region for remote vision examination and refractive examination. The refraction test was carried out under the condition of non-Ciliary muscle paralysis using a desktop automatic computer optometer. Chi-squared test and multivariate Logistic regression were used to analyze the myopia status of children and adolescents and its influencing factors. Results: From 2019 to 2021, the myopia rate of children and adolescents was 53.30%, 58.65% and 54.82%, respectively, the difference was statistically significant ( χ 2=991.70, P <0.01). The overall female myopia rate(58.82%) was higher than that of male (51.52%), and the differece was statistical significant ( χ 2=3 295.66, P <0.05). The myopia rates of boys and girls by year were 49.44% and 57.30%, 54.76% and 62.60%, 51.23% and 57.62%, respectively, and the differences were statistically significant ( χ 2=1 197.02, 922.31, 1 172.09, P <0.01). The overall myopia rate of urban students (59.42%) was higher than that of suburban counties (53.61%), and the difference was statistically significant ( χ 2=1 565.03, P <0.05). The myopia rates of children and adolescentss in urban and suburban counties were 59.20% and 50.79%, 60.26% and 57.88%, 58.95% and 53.36%, and the differences were statistically significant ( χ 2=1 150.80, 74.10, 529.25, P <0.01). The children and adolescents of learning stages were of statistical significance ( χ 2=92 402.39, P <0.05), and the overall myopia rate of senior school students was the highest, accounting for 83.57%. The difference of overall myopia rates of different age groups was of statistical significance ( χ 2=121 881.67, P <0.05), and the students in age group of 17 ranked the first (83.32%), those in age group of 5 ranked the last(15.52%). Conclusion From 2019 to 2021, the myopia rate of children and adolescents in the Inner Mongolia Autonomous Region increase first and then decrease, and the myopia rate in 2020 and 2021 is higher than that in 2019. The high incidence and low age of myopia are intensifying. The prevention and controlling of myopia among children and adolescents should be strengthened, so as to reduce the occurance of myopia.

Humans ; Angina, Stable ; COVID-19 ; Risk Factors ; Patients

Objective:To explore the reconstruction strategy and technical selection of S3 hepatic vein with middle hepatic vein confluence in pediatric liver transplantation(LT)using living donor left lateral segment to lower the risk of vascular complications caused by variant grafts.Methods:From January 2015 to June 2021, retrospective analysis is performed for 840 consecutive cases of pediatric living donor LT using left lateral segment(LLS).There are 32 cases of S3 hepatic vein with middle hepatic vein confluence with an overall incidence of 3.81%.Individualized reconstruction strategies are implemented according to the specific conditions of variation and different interposition vessels available: group I unification venoplasty technique with interposition vein graft is employed for reconstructing HV from grafts, prolonged S3 is formed into a single opening with S2 and then anastomosed with recipient(21 cases); group Ⅱ dual HV reconstructions were performed(11 cases); venoplasty of recipients'LHV, MHV and inferior vena cava(IVC)is performed for creating a large orifice for anastomosis with S2 HV from graft and S3 is anastomosed with stump of recipient right HV directly or interposed blood vessels.Clinical features and prognosis of two groups, the incidence, treatment and prognosis of HVOO and the incidence of HVOO between variant and non-variant groups were compared.Results:The median follow-up time of variant group(32 cases)is 23.8 month with an incidence of HVOO at 15.6%.During the same period, the non-variant group incidence of HVOO is 4.5%.There is inter-group statistical difference( P=0.014).The only statistical difference between groups Ⅰ and Ⅱ is ultrasonic blood flow velocity of S3 HV at 14 POD [(39.15±16.37)vs(20.05±8.52)cm/s, P=0.001].HVOO occurred in 7 cases and 6 cases respectively in groupⅠ and group Ⅱ.There is no statistical difference( P=0.310).There are no intractable vascular complications.Long-term vascular patency of allogeneic and autologous interposition vein is satisfactory and there is no graft failure or mortality related to HVOO. Conclusions:Selecting strategies and techniques for reconstructing S3 hepatic vein with middle hepatic vein confluence at our center are reasonable, safe and effective.And the overall treatment efficacy is satisfactory.Reasonable selection of multidimensional reconstruction methods and accurate application of various technologies are conducive to improving patient prognosis.

Objective:To explore the relationship between serum lactate level and early prognosis after liver transplantation (LT) in children.Methods:Between January 1, 2018 and December 31, 2020, 675 pediatric LT recipients were recruited. Clinical data were retrospectively reviewed, early postoperative serum lactate level and clearance rate recorded and receiver operating characteristic (ROC) curve plotted for determining optimal cut-off values. The inter-group differences in early postoperative complications and patient/graft survival rates were compared.Results:According to ROC, blood lactate levels >1.99 mmol/L at 12 h postoperatively were associated with early postoperative graft loss (AUC 0.73, 95% CI: 0.62-0.84, P=0.01). Age and weight of recipients in high-level group were 7.17(5.70-10.40) month and 7.00(6.00-8.60) kg and both were significantly lower than those in low-level group [7.80(6.21-13.58) month and 7.20(6.45-9.00) kg]. The inter-group differences were statistically significant ( P=0.017, P=0.034). Blood plasma transfusion volume, red blood cell transfusion volume, portal vein pressure pre-closure, postoperative intensive care unit (ICU) stay, ventilator use time, early allograft dysfunction rate, early postoperative pulmonary infection rate and recipient mortality rate in high-level group were 400 (200-400) ml, 2.00 (2.00-4.00) U, (15.71±4.44) mmHg, 2.50(2.00-3.00) day, 3.81(2.47-8.50) hour, 22.95%(42/185), 16.76%(31/185) and 6.49%(12/185) respectively. The above values were significantly higher than those in low-level group 200(100-400) ml, 2.00 (2.00-3.00) U, (14.69±4.68) mmHg, 2.00(2.00-3.00) day, 3.53(2.34-6.12) hour, 14.69%(72/490), 11.02%(54/490) and 1.43%(7/490) respectively. The inter-group differences were statistically significant ( P<0.001, P=0.014, P=0.015, P=0.037, P=0.043, P=0.011, P=0.045 & P<0.001). The incidence of early postoperative acute cellular rejection was significantly lower in high-level group than that in low-level group [11.89%(22/185) vs 22.86%(112/490)]. The inter-group difference was statistically significant ( P=0.01). The 1/3-month cumulative survival rates of patient/graft were 94.6%, 94.1% and 92.4%, 91.4% in high-level group versus 99.2%, 98.6% and 99.0%, 98.4% in low-level group. There were significant inter-group differences ( P=0, P<0.000 1). With a rising level of lactate at 12 h postoperatively, risk of early graft loss and early recipient mortality spiked markedly ( P<0.05). Conclusions:Serum lactate level post-operation is a valid predictor of early prognosis after LT in children.

Objective:To explore the efficacy of reduced left lateral segment graft during pediatric living donor liver transplantation.Methods:From January 2014 to December 2019, 67 children aged under 1 year underwent living donor liver transplantation with reduced left lateral segment graft (RLLS group). Clinical data were analyzed retrospectively and compared with those of left lateral segmentgraft living donor liver transplantation (LLS group). The differences in basic profiles, postoperative complications and postoperative patient/graft survival rate were compared.They were divided into two groups according to whether graft/recipient weight ratio (GRWR) was more than 4%.And major postoperative complications and graft/recipient survival rates were compared.Results:Age, height and weight of recipients were significantly lower in RLLS group than those in control group ( P<0.05). However, donor weight, donor body mass index (BMI), estimated graft volume and proportion of fatty liver from donor were significantly higher than those in control group ( P<0.05). Operative duration, intraoperative blood loss and erythrocyte transfusion were significantly higher than those in control group ( P<0.05). No significant inter-group differences existed in average postoperative hospital stay, intensive care unit (ICU) stay duration or postoperative ventilator use time ( P>0.05); no significant inter-group difference existed in the incidence of such major surgical complications as hepatic artery thrombosis, portal vein stenosis and bile duct complications ( P>0.05). The 1/3-year cumulative survival rates of postoperative patients and grafts were 92.5%, 91.2% and 92.5%, 91.2% in RLLS group and 96.3%, 95.3% and 95.9%, 95.1% in LLS group respectively.There was no significant inter-group difference ( P<0.05). The rate of postoperative hepatic vein stenosis was significantly higher in GRWR>4% group than that in control group ( P<0.05). Conclusions:Due to a rapid progress of technology, living donor liver transplantation has achieved satisfactory outcomes in children with reduced left lateral segment graft.Whether or not performing reduction surgery should be judged comprehensively according to the matching of donors and recipients and blood flow of liver during operations.And GRWR>4% is not an implementation criterion.

Objective:To investigate the effect of Budesonide (BUD) on pulmonary vascular development and the expression of vascular endothelial growth factor (VEGF) and nucleotide binding oligomerization domain-like receptor protein 3 (NLRP3) in newborn rats with bronchopulmonary dysplasia (BPD) caused by intrauterine infection.Methods:The 15-day-pregnant SD rats were divided into control group and infection group [intraperitoneal injection of 0.35 mg/(kg·d) lipopolysaccharide], and the newborn rats born by the above groups were divided into 3 groups: BUD group (0.5 mg of BUD suspension), normal control group (NC group, equal amount of 9 g/L saline), BPD group (equal amount of 9 g/L saline), with 40 rats in each group, all of them were inhaled twice a day for 14 days.Ten newborn rats were selected at birth, on the 3 rd, 7 th and 14 th day after administration.Pulmonary histopathological changes and radial alveolar counts (RAC) were observed after HE staining, and the thickness of alveolar respiratory membrane was measured; the platelet-endothelial cell adhesion molecule (PECAM-1/CD 31) in lung tissue was detected by immunohistochemistry, and the density of pulmonary microvessels was calculated; the expressions of VEGF, NLRP3 and Caspase-1 were detected by Western blot; and the levels of serum interleukin( IL)-1β and IL-18 were measured by enzyme-linked immunosorbent assay. Results:With the increase of day-old, the lung tissue of newborn rats in NC group was gradually developed and matured, the structure of alveoli was clear, the size was uniform, the count was significantly increased, and no obvious pathological changes were observed.In BPD group, the lung tissue structure was disordered, the alveoli were different in size and few in count, and inflammatory cells were exuded from the alveoli or the alveoli space.Compared with BPD group, the pathological changes of lung tissue in BUD group were significantly reduced.On the 3 rd, 7 th and 14 th day after administration, compared with NC group, the RAC, average integral optical density of CD 31 positive cells, density of pulmonary microvessel and level of VEGF protein in lung tissue of BPD group and BUD group were lower, and the differences were statistically significant (all P<0.05); while the thickness of respiratory membrane, level of NLRP3, Caspase-1 proteins in lung tissue and serum levels of IL-1β, IL-18 were significantly higher, and the differences were statistically significant(all P<0.05). Compared with BPD group, the RAC, average integral optical density of CD 31 positive cells, density of pulmonary microvessel and level of VEGF protein in lung tissue of BPD group and BUD group were significantly higher, and the differences were statistically significant (all P<0.05); while the thickness of respiratory membrane, level of NLRP3, Caspase-1 proteins in lung tissue and serum levels of IL-1β, IL-18 were significantly lower, and the differences were statistically significant (all P<0.05). Conclusions:The occurrence and development of pathological changes of BPD newborn rats caused by intrauterine infection can affect the development of pulmonary vessels through the inflammatory response of lung tissue.BUD can alleviate pathological changes in lung tissues of BPD newborn rats by reducing inflammatory reaction and up-regulating VEGF expression, promoting pulmonary vascular remodeling, and increasing pulmonary microvascular density.

Objective:To explore the influence of prognostic nutritional index (PNI) and controlling nutritional status (CONUT) on the prognosis of patients with multiple myeloma.Methods:Data of 157 patients with multiple myeloma (MM) at the affiliated hospital of Xuzhou medical university from January 2014 to December 2018 were retrospectively evaluated. The operating characteristic (ROC) curve analysis was adopted as the optimal cut-off point. PNI and CONUT were grouped based on the cut-off points of 44.45 and 3.5, respectively, and the differences between age, gender, serum calcium, β 2-microglobulin, serum creatinine, lactate dehydrogenase, and hemoglobin were analyzed. The prognostic factors were analyzed via univariate and Cox multivariate regression analyses. Results:The level of PNI and CONUT is the influencing factor of OS time. The univariate analysis revealed that age, LDH, plasma cell ratio, β 2-microglobulin, ISS stage, PNI, and CONUT were the risk factors for the prognosis of patients with MM. The multivariate analysis revealed that age ( HR=1.636, 95% CI 1.014-2.640) , plasma cell ratio ( HR=1.953, 95% CI 1.232-3.096) , and PNI ( HR=0.513, 95% CI 0.287-0.917) were the independent prognostic risk factors of patients with MM. Conclusion:Low PNI in patients with MM indicates a poor prognosis, which is an independent prognosis risk factor.

Objective To explore the gender differences in the association between iron metabolism and bone turnover markers in elderly patients with fragility fracture.Methods A total of 271 patients admitted in our hospital from Aug 2014 to Oct 2017 with osteoporotic fractures were divided into two groups:109 males and 162 females,aged from 60 to 92 years.Both groups were further divided into 3 age groups(60 to 70,71 to 80,and ≥81 year group).Biochemical indicators,serum ferritin and bone turnover markers were detected eight hours after admission.Results In the male group,there were no statistical differences in serum ferritin and serum procollagen type Ⅰ Nterminal propeptide(PINP) among age groups (all P ＞ 0.05).Serum β-carboxy terminal telopeptide of collagen type Ⅰβ-CTX(β-CTX)was elevated with ageing.In the female group,serum ferritin,PINP,and β-CTX were elevated with ageing.There was a significant positive correlation between serum ferritin and β-CTX in two gender groups (all P ＜ 0.05)without gender difference.Gender difference was observed in the correlation between serum ferritin and PINP between two gender groups:a significant positive correlation in the female group (r =0.255,P =0.001)whereas a significant negative correlation in the male group(r=-0.207,P=0.031).Conclusions There are gender differences in correlations of serum ferritin with bone turnover markers.Increased iron accumulation in postmenopausal women is closely correlated with high bone turnover rate.

Objective To explore the role of ultrasound-guided core needle biopsy in diagnosis and treatment of thyroid nodules.Methods 778 cases undergoing ultrasound-guided core needle biopsy in our department from Jan.2012 to Dec.2014 were retrospectively analyzed,and the sensitivity,specificity and accuracy were calculated.Results All the patients were operated successfully.Except for 21 nodules undiagnosed,16.4％ (124/757) were histologically diagnosed as malignant and 83.6％ (633/757) were benign.15 samples of the 124 malignant nodules were less than 10 millimeter in diameter.The sensitivity,specificity and accuracy were 100％,94.8％ and 95.6％,respectively.Of the ultrasound features,blood flow,boundary,internal situation and calcification were statistically significant between benign and malignant nodules,but not so between the groups of different greatest dimentions.Conclusion Ultrasound-guided core needle biopsy is safe and effective for obtaining thyroid nodule tissue,and it is helpful for diagnosis of thyroid diseases.