OBJECTIVETo investigate relation between displaced inferior ramus fractures and posterior pelvic ring injury.

METHODSFrom August 2012 to August 2015, 51 patients of pubic ramus fractures with complete record were retrospective reviewed including 27 males and 24 females with an average age of(49.1±19.0) years old ranging from 9 to 90 years old. The time from injury to treatment ranged from 0.3 to 48 hours with an average of 10.1 hours. According to Tile classification of pelvic fractures, 28 cases were type A, 17 cases were type B, 6 cases were type C. Pelvic radiographs and computed tomography scans were detailed and evaluated for whether there were posterior pelvic ring injury, meanwhile pubic rami fractures were divided into 4 groups as follow: displaced inferior ramus fractures group, undisplaced inferior ramus fractures group, displaced superior ramus fractures group, undisplaced superior ramus fractures group;the incidence rate of association of posterior pelvic ring injury was determined and compared.

RESULTSTwenty-six patients had displaced inferior ramus fractures, all of them (100%) were combined with posterior pelvic ring injury. Twenty patients had undisplaced inferior ramus fractures, 6 of them(30%)were combined with posterior pelvic ring injury. Twenty-eight patients had displaced superior ramus fractures, 22 of them(78.5%) were combined with posterior pelvic ring injury. Twelve patients had displaced superior ramus fractures, 5 of them(41.6%) were combined with posterior pelvic ring injury. Compared with undisplaced inferior ramus fractures group, there was statistic difference(=0.028 8<0.05) on the incidence rate of posterior pelvic ring injury, there were no statistic difference(=0.055 8>0.05;=0.168 3>0.05) while compared with other undisplaced superior ramus fractures group and displaced superior ramus fractures group, but the incidence rate of association with posterior pelvic ring injury much higher than both of two groups (100% vs 41.6%, 78.5%).

CONCLUSIONSDisplaced inferior pubic ramus fractures have the highest incidence rate of association with posterior pelvic ring injury, frequently prompted injury to the posterior pelvis. Displaced inferior ramus fractures were an indirect evidence of posterior pelvic injury.

OBJECTIVE: To investigate the effects of different stimultors (PHA, PMA and IL-2) and culture systems (PBMC and whole blood) on the proliferation of human peripheral blood lymphocyte subsets, so as to provide the experimental basis for selecting the appropriate system according to the experimental purposes. METHODS: A total of 10 ml serum samples were collected from healthy volunteers (n=6). The 300 μl whole blood was directly used to detect lymphocyte subsets by flow cytometry. The 400 μl whole blood were inoculated respectively with 3 different stimulators at 37℃ and 5% CO2 for 60 h; Three different stimulators were also added to the PBMC which were isolated from 2 ml whole blood. Then the proliferation ability of lymphocyte subsets was analyzed by flow cytometry. RESULTS: After the PBMC were stimulated with PHA, CD4CD8CD3 lymphocytes were the most subset; The proportion of CD3CD4 T lymphocytes and CD3CD19 B lymphocytes decreased after being stimulated by PMA (P<0.01, P<0.05); the lymphocyte subset ratio had no significant change after being stimulated by IL-2. After the whole blood system was stimulated with PHA, the CD4/CD8 T lymphoblasts were main subsets, the counts of B lymphocytes and NK cells were reduced; after being stimulated with PMA, the number of CD8CD3 T lymphoblast and CD4CD8T lymphocytes increased, the B/NK cells were not distinguished with the surface markers; after the whole blood system was stimulated with IL-2, the proportion of NK cells significantly increased (P<0.05). CONCLUSION Lymphocyte proliferation stimulated by PMA is the fastest, while the effect of IL-2 on the lymphocyte subset proportion stimulated by IL-2 is the minimal. After being stimulated by PHA the division cycles of lymphocyte are the most.
Cell Proliferation ; Flow Cytometry ; Humans ; Killer Cells, Natural ; Lymphocyte Activation ; Lymphocyte Count ; Lymphocyte Subsets

OBJECTIVE:To promote the safe use of Heparin sodium injection for children. METHODS:According to litera-ture retrieve,questionnaire survey and field investigation,Health care failure mode and effect analysis method(HFMEA)was ad-opted to search for the failure modes of Heparin sodium injection for children,and preventive strategies were established and imple-mented based on these failure modes. Its effects were evaluated by comparing the error rate and risk priority number rating (RPN value)before and after the implementation. RESULTS:Totally 5 risk points of Heparin sodium injection requiring immediate inter-vention were obtained from RPN value,including wrong dose of Heparin sodium injection in prescribing,pharmacists'unclearness for the calculation method of the dose of Heparin sodium injection in dispensing,and nurses'no performing of double check sys-tem before infusion in administration,etc. After implementing related countermeasures,related error of Heparin sodium injection was decreased from 8 cases to 1 case,and error rate was declined from 3.76% to 0.51%(P<0.01). The RPN values of 5 failure modes were decreased from 112.08,91.56,115.78,94.52,99.23 to 28.02,23.91,27.71,23.63,20.55,respectively. CONCLU-SIONS:HFMEA can prospectively conduct systematical analysis for Heparin sodium injection for children. Implementing related countermeasures based on the current situation of our hospital can reduce the related error of Heparin sodium injection and promote the medication safety of children.

OBJECTIVETo study the therapeutic effect of mini-traumatic ventriculo-atrial shunt on hydrocephalus.

METHODSSeventeen patients were treated with right internal jugular venepuncture intubation to finish minimally invasive ventriculo-atrial shunt for hydrocephalus. The patients were evaluated by CT/MRI. The catheters were deployed at the proper position in the right atrium under X-ray fluoroscopy.

RESULTSThe hydrocephalus in all the 17 patients eliminated with this surgical procedure with a 100% success rate technically. The operational duration ranged from 0.75 to 1.5 h (average: 1 h). Mistaken puncture into the internal carotid artery as a complication occurred on 1 case.

CONCLUSIONSThe mini-traumatic ventriculo-atrial shunt, as a novel minimal invasion technique, has the advantages of small trauma, no influence on local blood circulation, short time and simplicity at operation, rapid healing, and good short-term effect. Moreover, it is suitable for those patients with organic dysfunction.

Adolescent ; Adult ; Cerebrospinal Fluid Shunts ; instrumentation ; Female ; Heart Atria ; Humans ; Hydrocephalus ; surgery ; Male ; Middle Aged ; Minimally Invasive Surgical Procedures ; Treatment Outcome

Objective: Intraoperative localization of the ureter can contribute to accurate dissection and minimize ureteral injury in colorectal surgery. We aim to summarize a single center's experience of fluorescence ureteral visualization using methylene blue (MB) and explore its visualization efficiency. Methods: This is a descriptive case-series-study. Clinical data of patients who had undergone laparoscopic colorectal surgery and fluorescence visualization of the ureter in the Gastrointestinal Surgery Department of Guangdong Provincial People's Hospital from March 2022 to May 2022 were retrospectively collected. Patients with incomplete surgery videos, renal insufficiency, or allergic reactions were excluded. MB was infused with 0.9% NaCl at 1.0 mg/kg in 100 mL of normal saline for 5 to 15 minutes during laparoscopic exploration. Imaging was performed using a device developed in-house by OptoMedic (Guangdong, China) that operates at 660nm to achieve excitation of MB. Clinical information, MB dosage, rate of successful fluorescence, time to fluorescence, operation time, blood loss, intraoperative blood oxygen levels, pathological staging, changes in renal function, and post-operative complications were retrospectively analyzed. Results: The study cohort comprised 27 patients (24 men and 3 women) with an average age of (60.25±16.95) years and an average body mass index of (21.72±3.42) kg/m². The dosage of MB was 0.3-1.0 mg/kg and the infusion time was 5-15 minutes. Fluorescence signals were detected in all patients. The median time to signal detection was 20 (range, 10 to 40) minutes after MB infusion. The range of intraoperative blood oxygen fluctuation averaged 2.5% (range, 0 to 7.0%). The median change in creatine concentration was -1.3 (range, -17.2 to 29.2) µmol/L. No patients had complications associated with use of MB. Fluorescence visualization of the ureter was very valuable clinically in two patients (thick mesentery, stage T4). Conclusion: MB is a safe and effective means of visualizing the ureter by fluorescence during laparoscopic colorectal surgery, especially when the procedure is difficult. MB in a dosage of less than 1 mg/kg can slowly infused for more than 5 minutes during laparoscopic exploration. During the infusion, attention must be paid to blood oxygen fluctuations.
Male ; Humans ; Female ; Adult ; Middle Aged ; Aged ; Ureter/surgery* ; Methylene Blue ; Retrospective Studies ; Infusions, Intravenous ; Colorectal Surgery ; Laparoscopy/methods* ; Digestive System Surgical Procedures

OBJECTIVETo explore the existence of spotted fever group Rickettsiae (SFGR) in Guangdong province.

METHODSSera were tested to find the SFGR in population and host animals. The target samples were screened by polymerase chain reaction (PCR), and Rickettsiae was isolated with embryonated hen eggs and identified by serological tests.

RESULTSEight hundred and sixty people in natural condition and 321 of mice were determined. The mean positive rate of healthy population was 3.84%. To compare results among elected places, Fisher's exact test was applied. The difference was suggestive (P < 0.01), and there was no significant difference between mountain and plain areas. There was also no significant difference between mountain and plain areas (P > 0.05). Positive rate of mice was 4.67%, with Rattus fulvescens, Rattus edwardsi, Bandicota indica 11.59%, 12.90%, 3.13% respectively. It was the first time that SFGR antibodies in Rattus fulvescens, Rattus edwardsi, Bandicota indica were reported. A total number of 321 mice spleens and 394 ticks from the surface of mice body were collected. Two strains of SFGR, GDFK58-2000 and GDFK59-2000, were isolated in the ticks from the body surface of 2 Rattus fulvescens. They were identified as Rickettsia sibirica by serological tests. Five hundred thirty-three bp OmpA gene fragments of the two strains were cloned and sequenced. Compared with other relevant strains in Genbank, the rates of homology of nucleotide sequences of GDFK58-2000 and GDFK59-2000 and other Rickettsia sibirica strains were from 99.6% to 100%, and the homology of amino acid speculated was 100%.

CONCLUSIONIt has been proved that epidemic areas of north Asia tick-transmitted SFGR, did exist in Guangdong province confirmed by hostanimals, transmission vectors and aetiology.

Adolescent ; Adult ; Aged ; Animals ; Child ; China ; epidemiology ; Disease Reservoirs ; Female ; Humans ; Male ; Mice ; Middle Aged ; Rats ; Rickettsia rickettsii ; classification ; genetics ; isolation & purification ; Rocky Mountain Spotted Fever ; epidemiology ; microbiology ; Rodentia ; microbiology ; Sequence Homology, Amino Acid ; Ticks ; microbiology

BACKGROUNDThe epidermal growth factor receptor tyrosine kinase inhibitor(EGFR-TKI) is playing an important role in the treatment of non-small cell lung cancer.The acquired resistance of EGFR-TKI has become a hot spot.This study aims to investigate VEGF-D expression level in lung adenocarcinoma with or without acquired resistance to gefitinib and in normal lung,so as to explore the role of VEGF-D in resistance of gefitinib.

METHODSLung adenocarcinoma,normal lung tissues adjacent to the carcinoma and adenocarcinoma with acquired resistance to gefitinib including some metastastic lymph nodes were obtained during operation.SYBR Green real-time PCR with beta actin gene as the endogenous control was performed to examine VEGF-D gene expression semi-quantitatively.After positive expression of VEGF-D was determined,the expression ratio and level in each group was analyzed qualitatively and quantitatively.

RESULTSExact significance was computed to compare VEGF-D expression ratios in groups of lung adenocarcinoma with acquired resistance to gefitinib(1/6,16.7%),lung adenocarcinoma(7/14,50.0%) and normal lung(16/16,100.0%) and the difference was significant(P=0.000 091 7).VEGF-D relative expression level in the seven lung adenocarcinoma cases was significantly lower than its corresponding normal lung tissue by analysis of nonparametric test(P < 0.01).

CONCLUSIONSVEGF-D has a high-level expression in normal lung tissues,while has a decreased expression in lung adenocarcinoma with or without acquired resistance to gefitinib,suggesting that VEGF-D functions in lung adenocarcinoma with or without acquired resistance to gefitinib in a way,which is different from in normal lung.

OBJECTIVETo analyze the character of drug-resistance gene mutation for patients with chronic hepatitis B in Shenzhen.

METHODS2465 clinical cases with chronic hepatitis B were analyzed for gene mutation with MALDI-TOF-MS in order to know about the epidemiology of HBV drug resistance and its clinical significance.

RESULTS763 cases were detected mutation among the 2465 cases. The frequency of Lamivudine related mutation was the highest (42.96%), especially on rtL180M (14. 72%), rtL204I (18. 50%), rtL204V (9. 74%). The frequency of Adefovir related mutation was about 8. 19% , among of which rtN236T was 4. 15%. The frequency of Entecavir related mutation was about 0. 49%. Among all samples, rtS202I mutation couldn't be detected. The existence of drug resistance could be detected earlier with MALDI-TOF-MS from the results of dynamic follow-up.

CONCLUSIONIn Shenzhen, the main HBV mutation was associated with lamivudine and adefovir,and with lower frequency of mutation for entecavir,so the optimized treatment for HBV was entecavir. It could detect the existence of drug resistance effectively with MALDI-TOF-MS and guide clinical treatment.

Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; China ; epidemiology ; DNA, Viral ; genetics ; Drug Resistance, Viral ; Female ; Hepatitis B virus ; genetics ; Hepatitis B, Chronic ; drug therapy ; epidemiology ; virology ; High-Throughput Screening Assays ; methods ; Humans ; Male ; Middle Aged ; Mutation ; Young Adult

OBJECTIVEThis study aimed to evaluate the effectiveness of multi-disciplinary treatment approaches in reducing neurological disabilities in premature infants.

METHODSA total of 117 infants who were born premature in our hospital between March 2008 and February 2010 but had no congenital malformations and no severe neonatal complications, were enrolled in this study. They were randomly allocated to a multi-disciplinary treatment group (n=63) and a control group (n=54). While patients in the control group underwent an early conventional treatment, those in the multi-disciplinary treatment group were subjected to regular development monitoring, neurological examination and screening for brain injury, neuro-nutrition and neurodevelopment therapies, and rehabilitation training.

RESULTSThe incidence rates of abnormalities in posture, reflex, sleep, muscle tone and EEG were significantly lower in the multi-disciplinary treatment group than in the control froup (P<0.05) at corrected postnatal ages of 6-12 months. At corrected postnatal ages of 6, 12, 18 and 24 months, both mental development index (MDI) and psychomotor development index (PDI) scores were significantly higher in the multi-disciplinary treatment group than in the control group (P<0.05). At corrected postnatal age of 3 years, incidence rates of cerebral palsy, language barrier, abnormal muscle tone and hearing impairment were significantly lower in the multi-disciplinary treatment group than in the control group (P<0.05).

CONCLUSIONSEarly multi-disciplinary intervention approaches may significantly improve mental and motor developments and reduce the incidence of cerebral palsy-associated neurological disabilities in premature infants.

Cerebral Palsy ; prevention & control ; Child, Preschool ; Developmental Disabilities ; prevention & control ; Female ; Humans ; Infant ; Infant, Newborn ; Infant, Premature ; Infant, Premature, Diseases ; prevention & control ; Male

OBJECTIVE：To provi de reference for standardizing pediatric clinical trials and promoting the development and application of pediatric medication in China. METHODS ：Chinese Clinical Trial Registry （Chi CTR ）database were searched to collect all clinical trials related to pediatric population under 18 years old from the inception to Oct. 1st，2019. Those clinical trials were analyzed statistically in respect of name of registered project ，involved disease/system ，research stage ，registration time ， registration status ，regional distribution of research institutions ，source of funds ，research type ，whether data management committee was set up ，situation of recruited research objects ，ethics committee approval status ，whether blind method was adopted ， whether to collect human specimens and whereabouts of human specimens. RESULTS ：A total of 231 pediatric drug clinical trials were included. The clinical trials involved 21 kinds of diseases/systems ，mainly were tumors and tumor-like lesions ，ophthalmic diseases and allergic disease. The research stage has the most items （85 trials，36.80％）in post-marketing drug clinical trials ；there were 77 items of phase Ⅰ-Ⅳ clinical trials （33.33％）. The number of pediatric drug clinical trials was increased year by year ，and among which 179 trials were pre-registered （77.49％），52 trials were supplementary registration （22.51％）. Beijing ，Shanghai， Guangdong，Chongqing and Zhejiang were the major regions where pediatric drug clinical trials were carried out ，and the clinical trial projects of which accounted for 66.23％（153/231）of the total number of included projects. The funding sources were mainly self-financing（57.85％），hospital finance （20.18％），and local government finance （10.31％）. The main type of research was intervention study and observational study ，accounting for 88.31％ in total. Totally 145 trials（62.77％）had not yet determined whether to set up a data management committee ；201 trials（87.01％）had passed the review of the ethics committee of the relevant institution；168 trials（72.73％）did not clarify whether the blind method was used ；133 trials（57.58％）had collected 001-001） human specimens ，and the collected human specimens were 3360875。E-mail：794446155@qq.com mainly destroyed after use. CONCLUSIONS ：The number of pediatric drug clinical trials registered in Chi CTR is increasing but there i s regional imbalance. Researchers have gradually established the concept of pediatric clinical trial registration ，and have realized the importance of data management to research quality ，and the management of collected trial specimens is relatively standardized. It is suggested that relevant departments increase the publicity of clinical trial registration and improve the clinical trial registration management system ； relevant researchers should increase the awareness of clinical trial registration ，standardize registration application and trial project management.