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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.
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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.
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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.
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Objective:To evaluate endoscopic retrograde appendicitis therapy in treatment of children with acute uncomplicated appendicitis.Methods:Sixty children patients were admitted at the Affiliated Hospital of Zhengzhou University from Oct 2019 to Jun 2021 and were divided into ERAT group ( n=30) and LA group ( n=30). Results:All operations were successfully performed . ERAT children started oral feeding earlier [(6.8±2.0) h vs. (12.3±2.0) h, t=-10.636, P<0.001], postoperative hospital stay was shorter [(3.2±1.3) d vs. (5.0±1.3) d, t=-5.360, P<0.001]. After 14 months follow up, the recurrence rate in the ERAT group was 6%. The complication rate of LA was 10%. Conclusion:ERAT is a safe and effective therapy in treating children with acute uncomplicated appendicitis with low,acceptable recurrence rate.
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Objective@#To investigate the awareness of knowledge about HPV infections and the willingness to HPV vaccination among male university students in Tongzhou District, Beijing Municipality, so as to provide insights into the formulation of the HPV vaccination strategy among males.@*Methods@#A total of 997 male university students in Tongzhou District were selected as the study subjects using a multi-stage stratified cluster random sampling method, and a self-designed questionnaire was used to investigate the awareness of HPV infections and HPV vaccine, and willingness to HPV vaccination. In addition, the factors affecting the willingness to HPV vaccination were identified. @*Results@#A total of 935 subjects were enrolled, with a mean age of (19.08±1.38) years, and there were 570 subjects with a Beijing household registration (60.96%). Among the 313 male university students that had heard of HPV, the awareness of HPV and HPV-related diseases was 59.42%, and among the 300 male university students that had heard of HPV vaccines, the awareness of HPV vaccines was 75.33%. The willingness to HPV vaccination was 38.50%, and the willingness was high among male university students with a non-Beijing household registration ( χ2=3.971, P=0.046 ), high household annual income ( χ2trend=6.219, P=0.013 ), short distance to vaccination clinics ( χ2=19.238, P<0.001 ), having heard of HPV ( χ2=11.188, P=0.001 ), having heard of HPV vaccine ( χ2=14.548, P<0.001 ), awareness of HPV and related diseases ( χ2=16.855, P<0.001 ) and awareness of HPV vaccine ( χ2=19.299, P<0.001 ).@*Conclusions@#The awareness of HPV and HPV vaccines and the willingness to HPV vaccination are low among male university students in Tongzhou District. Improving the correct recognition of HPV and HPV vaccines and the access to vaccination services are helpful to improve the willingness to HPV vaccination among male university students.
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Objective:To investigate the predictive value of Graeb score for the outcome of high-grade aneurysmal subarachnoid hemorrhage (aSAH) patients with intraventricular hemorrhage (IVH).Methods:Consecutive high-grade aSAH patients with IVH admitted to the No. 1 People's Hospital of Jiujiang from January 2012 to March 2020 were enrolled retrospectively. High-grade aSAH was defined as grade Ⅳ to Ⅴ according to the World Federation of Neurological Surgeons (WFNS) scale. The outcome of patients was evaluated by the modified Rankin Scale (mRS) at 3 months after discharge. A score of ≤2 was defined as a good outcome and a score of >2 were defined as a poor outcome. Multivariate logistic regression model was used to evaluate the correlation between Graeb score and clinical outcome, and the receiver operating characteristic (ROC) curve was used to determine the predictive value of Graeb score for clinical outcome. Results:A total of 86 high-grade aSAH patients with IVH were enrolled. Aneurysm treatment: craniotomy clipping in 42 patients (48.8%), intravascular embolization in 21 (24.4%), and conservative treatment in 23 (26.7%). Twenty-nine patients (33.7%) had a good outcome and 57 (66.3%) had a poor outcome. Multivariate logistic regression analysis showed that the Graeb score >6 (odds ratio [ OR] 26.360, 95% confidence interval [ CI] 4.106-169.235; P<0.001), the modified Fisher grade 3-4 ( OR 11.674, 95% CI 1.540-88.512; P=0.017) and complicated with chronic hydrocephalus ( OR 21.236, 95% CI 2.883-156.431; P=0.003) were the independent risk factors for the poor outcome. ROC curve analysis showed that the area under the curve of the Graeb score predicting for poor outcome was 0.843 (95% CI 0.760-0.926; P<0.001), the best cut-off value was 6.5, and the corresponding sensitivity and specificity were 71.9% and 86.2%, respectively. Conclusion:The Graeb score is an independent influencing factor affecting the clinical outcome of high-grade aSAH patients with IVH. Graeb score >6.5 had higher predictive value for the poor outcome in such patients.
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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.
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Objective:To investigate the causes of immune failure in the population with high vaccination rate of measles and rubella vaccine in Beijing by detecting the IgG antibody affinity in suspected cases of measles and rubella.Methods:Serum samples of 276 suspected cases of measles and rubella were tested for IgM and IgG antibodies by enzyme-linked immunosorbent assay (ELISA). The affinity of IgG antibody was detected, and the relative affinity index was calculated.Results:Among the 276 suspected cases, 104 were measles and 108 were rubella. Six measles cases had vaccination history and were caused by primary immunization failure ( n=3) and secondary immunization failure ( n=3). Twelve rubella cases had vaccination history and were due to primary immunization failure ( n=4) and secondary immunization failure ( n=8). Specific high-affinity antibodies were detected in nine measles cases and seven rubella cases without vaccination history, which indicated that these cases were reinfected. In the cases without measles or rubella, other pathogenic infections including mixed infections were detected, which were mainly caused by EB virus. Conclusions:Both primary and secondary immunization failure occurred in the population with immunization history. Reinfection was found in the patients who had not received vaccination against measles or rubella. Other pathogenic infections were existed among the cases without measles or rubella. Thus, misdiagnosis was responsible for the increased proportion of measles and rubella patients with immunization history in suspected cases in recent years. Full-course vaccination was conducive to produce high-affinity antibodies against measles and rubella. A supplementary vaccination campaign should be launched to consolidate the immune barrier against measles and rubella in key population or high-risk population, aiming to block the circulation of measles virus and achieve the goal of eliminating measles.
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Objective:To confirm the possible pathogen causing an outbreak of respiratory infectious disease in Beijing.Methods:Oropharyngeal swabs were collected from 14 cases with fever and detected by RT-PCR for respiratory viruses and bacteria. For specimens positive for adenoviruses, Fiber, Hexon and Penton gene fragments were amplified with specific primers and sequenced. BLAST and phylogenetic tree were used for sequence analysis.Results:All of the 14 specimens were adenovirus-positive. BLAST analysis of the sequences of Fiber, hexon and Penton genes showed that the 14 cases were all caused by adenovirus 3. The phylogenic tree analysis indicated that this adenovirus was closely related to an adenovirus of 3a51 genotype (GenBank No: KF268123) isolated in the USA in 2007.Conclusions:Human adenovirus genotype 3a51 caused this outbreak of respiratory infectious disease in Beijing.
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Objective:To analyze the epidemiological characteristics of breakthrough varicella cases with different doses of varicella vaccine immunization history in Beijing Tongzhou from 2013 to 2017.Methods:Data about varicella incidence and immunization history were obtained through spot investigation and consulting the information systems of Chinese Disease Control and Prevention and Beijing′s Immunization Programme. Descriptive epidemiological method was used for statistical analysis.Results:From 2013 to 2017, Tongzhou District reported 2 102 cases of varicella in primary and middle schools and kindergartens, which included 989 cases of primary varicella, 966 breakthrough varicella cases with one-dose vaccine immunization history, and 147 breakthrough varicella cases with two-dose vaccine immunization history. There were significant differences in gender, age, and occupation among the three groups. Among the primary cases, the incidence of fever and moderate and severe rash was 46.71% and 34.68%; among the breakthrough cases with one-dose immunization history, the incidence of fever and moderate and severe rash was 41.20% and 17.39%; among the breakthrough cases with two-dose immunization history, the incidence of fever and moderate and severe rash was 26.53% and 7.48%. There were significant differences in the incidence of fever and rash among the three groups. The median number of varicella morbidity interval was 5.11 years in one-dose immunization history group and 2.44 years in two-dose immunization history group, and the difference between them was statistically significant.Conclusions:The symptoms of fever and rash in breakthrough varicella cases become less atypical as the dose of vaccination increases. Because the clinical symptoms are relatively mild, breakthrough cases as a source of infection in collective units are more likely to be neglected.
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Objective@#To explore the long-term efficacy of laparoscopic-assisted anorectoplasty and conventional anorectoplasty in the treatment of children with high and middle anal atresia.@*Methods@#A retrospective cohort study was used. Inclusion criteria: (1) children with high and middle anal atresia; (2) complicated with rectourethral or rectovesical fistula; (3) complete follow-up data. Exclusion criteria: (1) complicated with 21-trisomy; (2) cerebral palsy and other mentaldisabilities; (3) Currarino syndrome; (4) FG syndrome. Clinical data of 88 patients with middle and high anal atresia, who complicated with rectourethral fistula or rectovesical fistula, and underwent anoplasty at Department of Pediatric Surgery, the First Affiliated Hospital of Zhengzhou University from January 2009 to June 2014 were enrolled in the study and analyzed. There were 24 cases with middle atresia and 64 cases with high atresia. All the cases were divided into 2 groups based on the operative method: laparoscopic group (laparoscopic-assisted anorectoplasty, 49 cases), pena group (posterior sagittal anorectoplasty, 39 cases). The demographic features of two groups were comparable. There were no statistically significant differences in gender, age, body mass, classification of anomaly types and sacral ratio (all P>0.05). Student t test and Chi square tests were used to compare the surgical conditions (operative time, postoperative hospital stay and complications), anal function (Kelly score), constipation (Krickenbeck constipation score) and anorectal pressure.@*Results@#Children of both groups all completed operation ssuccessfully. There were no statistically significant differences between laparoscopic group and pena group in the operative time [(120±31) minutes vs. (112±23) minutes, t=1.343, P=0.091] and postoperative hospital stay [(7.1±2.3) days vs. (10.7±3.3) days, t=6.021, P=1.000]. Complications were more common in the pena group [16.3% (8/49) vs. 35.9% (14/39), χ2=4.436, P=0.035]. The main complications in laparoscopic group were anal prolapse (8.2%, 4/49) and anal stenosis (6.2%, 3/49), while in pena group were anal stenosis (12.8%, 5/39) and perioperative perianal skin erosion (10.3%, 4/39). As for the anal function, the degree of feces, defecation control and sphincter contractility, the single scoring differences of Kelly scoring system were not statistically significant between the two groups, but the proportion of good function in the laparoscopic group was higher than that in the pena group [67.3% (8/49) vs. 38.5% (15/39), χ2=7.308, P=0.007]. Constipation occurred in 6 (12.2%) patients in the laparoscopic group, of whom 5 were improved by diet regulation and 1 required laxatives, while 9 (23.1%) patients developed constipation in the pena group, of whom 4 were improved by diet regulation and 5 required long-term laxatives. The difference of constipation ratio was not statistically significant (χ2=1.802, P=0.180). There were no cases of Krickenbeck constipation grade 3. Compared to the pena group, the laparoscopic group had higher anal resting pressure [(33.35±9.69) mmHg vs. (27.68±10.74) mmHg, t=2.599, P=0.011], higher dilating pressure [(9.00±5.61) mmHg vs.(6.51±3.24) mmHg, t=2.462, P=0.016], higher maximal squeeze pressure [(65.80±17.23) mmHg vs. (56.74±18.93) mmHg, t=2.389, P=0.019] and longer maximal contraction time [(21.16±5.02) seconds vs. (18.44±7.24) seconds, t=2.079, P=0.041]. The rectal resting pressure [(5.36±3.00) mmHg vs. (4.61±3.93) mmHg, t=1.015, P=0.312] was not statistically significantly different.@*Conclusions@#Compared with posterior sagittal anorectoplasty, laparoscopic-assisted anorectoplasty in the treatment of high and middle anal atresia has better long-term efficacy with less perioperative complications.
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We present a novel templateless approach for nonrigid reconstruction and motion tracking using a single RGB-D camera. Without any template prior, our system achieves accurate reconstruction and tracking for considerably deformable objects. To robustly register the input sequence of partial depth scans with dynamic motion, we propose an efficient local-to-global hierarchical optimization framework inspired by the idea of traditional structure-from-motion. Our proposed framework mainly consists of two stages, local nonrigid bundle adjustment and global optimization. To eliminate error accumulation during the nonrigid registration of loop motion sequences, we split the full sequence into several segments and apply local nonrigid bundle adjustment to align each segment locally. Global optimization is then adopted to combine all segments and handle the drift problem through loop-closure constraint. By fitting to the input partial data, a deforming 3D model sequence of dynamic objects is finally generated. Experiments on both synthetic and real test data sets and comparisons with state of the art demonstrate that our approach can handle considerable motions robustly and efficiently, and reconstruct high-quality 3D model sequences without drift.
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We report a young woman who was misdiagnosed as Graves' hyperthyroidism due to biotin immunoassay interference. Base on this case, essentials for diagnosis of thyroid diseases are discussed. We propose that in the clinical practice, a patient-centered professionalism should be consistently followed, and information other than laboratory findings should be valued.
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We report a young woman who was misdiagnosed as Graves' hyperthyroidism due to biotin immunoassay interference. Base on this case, essentials for diagnosis of thyroid diseases are discussed. We propose that in the clinical practice, a patient-centered professionalism should be consistently followed, and information other than laboratory findings should be valued.
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Objective To introduce and analyze the status of tumor multidisciplinary team (MDT) model application in primary hospitals.Methods MDT discussion decision-making and implementation of Nanpi People's Hospital from June 2013 to July 2015 were retrospectively analyzed.Results A total of 251 cases were recruited into the MDT discussion.Among them,233 primarily diagnosed cases reached MDT decision-making and 159 cases took the decision,118 cases achieved the purpose (74.2％),41 cases failed (25.8％).Yet in 74 cases not following the decision,11 cases achieved the desired purpose (14.9％),while 63 cases didn't meet the desired purpose (85.1％),the difference was statistically significant (x2 =71.97,P ＜ 0.01).Ultrasound interventional biopsy,enhanced CT scan,CT guided puncture,intraoperative frozen section examination in malignant tumor patients had significantly increased after MDT applied,the difference was statistically significant (all P ＜ 0.05).The annual new rural cooperative medical system referral rate in malignant tumor patients dropped sharply (x2 =19.86,P ＜ 0.01) Conclusions Doctors and cancer patients can benefit from MDT diagnosis and treatment model,which is worth generalization.
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Structure-from-motion (SfM) largely relies on feature tracking. In image sequences, if disjointed tracks caused by objects moving in and out of the field of view, occasional occlusion, or image noise are not handled well, corresponding SfM could be affected. This problem becomes severer for large-scale scenes, which typically requires to capture multiple sequences to cover the whole scene. In this paper, we propose an efficient non-consecutive feature tracking framework to match interrupted tracks distributed in different subsequences or even in different videos. Our framework consists of steps of solving the feature "dropout" problem when indistinctive structures, noise or large image distortion exists, and of rapidly recognizing and joining common features located in different subsequences. In addition, we contribute an effective segment-based coarse-to-fine SfM algorithm for robustly handling large data sets. Experimental results on challenging video data demonstrate the effectiveness of the proposed system.
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PURPOSE: The purpose was to compare the accuracy of Miniaci method using picture archiving and communication system (PACS) with a cable method in high tibial osteotomy (HTO). MATERIALS AND METHODS: This study analyzed 47 patients (52 knees) with varus deformity and medial osteoarthritis. From 2007 to 2013, patients underwent HTO using either a cable method (20 knees) or Miniaci method based on a PACS image (32 knees). In the cable method, the 62.5% point of the mediolateral tibial plateau width was located using an electrocautery cord under fluoroscopy (cable group). The Miniaci method used preoperative radiographs to shift the weight bearing axis (PACS group). Full-length lower limb radiographs obtained preoperatively and at the sixth postoperative week were used to compare the percentage of crossing point of the weight bearing line on the tibial plateau with respect to the medial border. RESULTS: The weight bearing line on the tibial plateau was corrected from a preoperative 11.0±7.0% to a postoperative 47.2±7.4% in the cable group and from 12.7±4.9% to 59.5±5.3% in the PACS group. The mechanical femorotibial angle was corrected from varus 8.9±3.7° to valgus 0.3±4.0° in the cable group and from varus 9.0±3.3° to valgus 2.9±2.6° in the PACS group. CONCLUSIONS: In HTO, correction based on the Miniaci method using a PACS was more accurate than correction using the cable method.
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Humanos , Anomalías Congénitas , Electrocoagulación , Fluoroscopía , Rodilla , Extremidad Inferior , Métodos , Osteoartritis , Osteotomía , Técnicas de Planificación , Soporte de PesoRESUMEN
Objective To investigate whether hydrogen-rich saline could ameliorate the expressions of cytokines in a rat model of inflammatory pain through activating heme oxygenase-1 (HO-1).Methods Eighty male Sprague-Dawley (SD) rats,weighing 180 ～ 220 g,were randomly divided into five groups (n =16 in each group):Control group (Con),inflammation pain group (CFA),inflammation pain + hydrogen-rich saline group (CFA + H2),inflammation pain + HO-1 inhibitor Znpp-Ⅸ group (CFA + Znpp-Ⅸ),and inflammation pain + hydrogen-rich saline + HO-1inhibitor Znpp-Ⅸ group (CFA + H2 + Znpp-Ⅸ).The mechanical withdrawal threshold (MWT) and thermal withdrawal latency (TWL) were tested on days 1 (T1),2 (T2),3 (T3),5 (T4),7 (T5),and 14 (T6) after inflammation pain.The expressions of spinal HO-1 mRNA and protein were measured with real-time quantitative polymerase chain reaction (RT-PCR) and Western blot,and spinal inflammatory cytokines were measured with enzyme-linked immunosorbent assay (ELISA) on day 7 after inflammatory pain.Results Compared to Con group,MWT and TWL were significantly reduced;the spinal HO-1 mRNA level,protein expression and activity were increased;and the levels of tumor necrosis factor-α (TNF-α),interleukin (IL)-1β,IL-6 and IL-10 in spinal tissues were also increased in CFA group (P ＜ 0.05).Compared to CFA group,MWT and TWL were significantly increased;the spinal HO-1 mRNA level,protein expression and activity were further increased;and the levels of TNF-α,IL-1β and IL-6 were decreased,while IL-10 was further increased in CFA + H2group (P ＜ 0.05).Compared to CFA + H2 group,MWT and TWL were decreased;the spinal HO-1 mR-NA level,protein expression and activity were decreased;and the levels of TNF-α,IL-1β and IL-6 in spinal tissue were significantly increased,while IL-10 was decreased in CFA + H2 + Znpp-Ⅸ group (P ＜0.05).Conclusions Hydrogen-rich saline can ameliorate the mechanical and thermal allodynia in a rat model of inflammatory pain,and reduce the release of inflammatory cytokines via activating HO-1.
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Objective To evaluate the feasibility and safety of portal-superior mesenteric vein resection and end-to-end anastomosis in cases of colonic carcinoma invading portal vein undergoing combined right hemicolectomy (RH) and pancreaticoduodenectomy (PD) without the need of graft interposition.Methods From 2004 to 2011,5 patients underwent resection of right-sided colon and pancreaticoduodenectomy combined mesentericoportal vein resection at a length from 3 to 4 cm and end-toend anastmoses without graft.Results Surgery was successful in all 5 patients,with complete resection,no severe complications occurred,and all 5 patients were cured.Conclusions Cancers in hepatic flexure of the colon frequently infiltrates the head of the pancreas and duodenum,involving the portal vein.Conservative radical right hemicolectomy and pancreaticoduodenectomy combined long mesentericoportal vein resection and end-to-end anastmoses without graft is a reasonable and safe procedure.
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<p><b>OBJECTIVE</b>To evaluate the clinical feasibility of daily quality assurance for linac radiation field by analyzing the trend of the daily testing data about parameter of radiation field.</p><p><b>METHODS</b>Two-dimensional ion chamber array Daily QA3 was used to measure the difference between the practical value and the standard value of the parameter about radiation field before commencing daily treatment. Farmer type ionization chambers from IBA Co. with DOSE1 dosimeter was used for the absolute dosimetry of photon and electron beams. Light/radiation field coincidence was checked by using films every month. The daily testing data (from 11/28/2009 to 4/8/2011) were reviewed and analyzed.</p><p><b>RESULTS</b>X-ray and electron output was increasing steadily; light/radiation field coincidence, beam flatness constancy and symmetry of X- ray and electron was keeping stable.</p><p><b>CONCLUSION</b>The procedures for daily quality assurance of linac radiation field, which will provide reference for long term linac calibration, are feasible in our experience.</p>
