Objective To explore the distribution and types of platelet antibodies in children with positive platelet anti-body in initial screening.Methods Blood samples of 80 pediatric patients who applied for platelet transfusion in our hospi-tal from September 2021 to May 2022 and tested positive for platelet antibodies were identified using the PAKPLUS kit for antibody identification,and the distribution of HLA and HPA antibodies were analyzed.Results Among the 80 reactive samples in initial screening,9 were negative,71 were positive.Among the 71 positive cases,1 was HLA-Ⅰantibody positive(1.41％,1/71),21 were HPA antibody positive(29.58％,21/71),and 49 were both HLA-Ⅰantibody and HPA antibody positive(69.01％,49/71).Among the70 HPA positive cases,23.95％(17/71)had a single HPA antibody,with18.31％(13/71)of anti GP Ⅱb/Ⅲa,2.82％(2/71)of anti GP Ⅰa/Ⅱa,2.82％(2/71)of anti GP Ⅳ and 0％(0/71)of anti GP Ⅰb/Ⅸ,while74.65％(53/71)presented multiple HPA antibodies.No statistically significant difference was found in antibody distribution among age,gender,transfusion history and disease types.Conclusion HLA-Ⅰ antibody combined with HPA antibody are the main types of platelet antibodies among children with positive platelet antibodies.Anti-GPⅡb/Ⅲa accounted for the largest proportion of HPA antibodies.Antibody distribution is not releted to age,gender,history of blood transfusion and disease types.

Objective:To construct a risk prediction and assessment system for incisional infection after spinal surgery.Methods:Based on the failure mode and effect analysis (FMEA), risk factors and assessment indicators of postoperative incisional infection in spinal surgery were sorted out through literature search followed by expert consultation using the Delphi expert consultation method. After three-level assessment indicators were selected according to their importance and expert opinions and assigned by different scores, a risk prediction and evaluation system was constructed for postoperative incisional infection after spinal surgery.Results:The 2 rounds of expert consultation questionnaire resulted in an effective response rate of 100%. The degree of expert consultation authority was 0.85, showing high reliability; the Kendall coordination coefficients of expert consultation ranged from 0.525 to 0.686, showing good coordination ( P<0.05). The three-level assessment indicators consisted of 3 primary, 18 secondary and 54 tertiary ones. After statistical analyses of the important risk indicators selected which consisted of 6 preoperative evaluation ones and 18 postoperative evaluation ones, 6 preoperative and 12 postoperative predictive indicators were obtained. The values of risk priority number (RPN) were calculated for high, medium and low risks for postoperative incisional infection using a semi-quantitative method. Conclusion:A self-designed system has been constructed for risk prediction and assessment of incisional infection after spinal surgery based on expert consultation and FMEA method.

Pancreatic ductal adenocarcinoma is a highly invasive malignant tumor of the digestive system with an extremely poor prognosis. Leukemia inhibitory factor is an important member of the interleukin-6 family and can regulate multiple physiological processes such as cell differentiation, growth, and renewing. This article reviews the mechanism of action of leukemia inhibitory factor in pancreatic ductal adenocarcinoma and the research advances in leukocyte inhibitory factor-targeted therapy based on literature evidence, and the analysis shows that leukemia inhibitory factor plays an important role in the progression, immune escape, and chemotherapy resistance of pancreatic ductal adenocarcinoma and may gradually become a potential biomarker and therapeutic target for pancreatic ductal adenocarcinoma.

At present, there is still a lack of comprehensive diagnosis and treatment criteria for pancreatic exocrine insufficiency around the world. Pancreatic surgeons often ignore or misjudge pancreatic exocrine insufficiency secondary to pancreatic cancer, and as a result, pancreatic exocrine insufficiency is not adequately treated, which greatly affects the quality of life of patients with pancreatic cancer. This article summarizes the latest research advances in the pathogenesis, typical symptoms, and diagnostic methods of pancreatic exocrine insufficiency, as well as pancreatic enzyme replacement therapy in different stages of pancreatic cancer. It is pointed out that pancreatic enzyme replacement therapy can significantly improve the quality of life of patients with different stages of pancreatic cancer.

【Objective】 To evaluate the coagulation function of children with Kasabach-Merritt syndrome(KMS)by thromboelastography (TEG) and conventional coagulation tests (CCTs), and to explore the correlation and consistency of the 2 test methods. 【Methods】 A total of 49 children with KMS, submitted to our hospital from January 2016 to December 2020, were enrolled. The TEG, CCTs data and platelet count were analyzed to evaluate the coagulation function, and the superiority of the 2 test methods were compared by Spearman correlation and Kappa consistency analysis. 【Results】 TEG and CCTs showed that the coagulation reaction time(R) was normal, the counts and function of platelet and fibrinogen decreased, and the D-dimer increased. The coagulation complex index (CI) indicated that the whole coagulation function was low. There was no significant difference in coagulation by sex or age in KMS children. The correlation analysis of TEG and CCTs in the coagulation function of KMS children showed that R was correlated with prothrombin time (PT) and activated partial thromboplastin Time(APTT), respectively (P<0.01); Fib had weak correlation with clot formation time (k)(r²=0.33), but strongly correlated with α-angle and MA value(r²=0.7, 0.69), respectively (P<0.01). PLT was moderately correlated with MA(r²=0.49, P<0.05); D-dimer had no correlation with LY30. Comparision resu lts of the consistency of TEG and CCTs showed that FIB and MA had consistency ( kappa=1, P<0.01); None or weak consistency was noticed among other indicators, R with PT/APTT, the kappa was 0.18 and 0.19; Fib with K/α-Angle, the kappa was 0.28 and 0.34; D-dimer with LY30, the kappa was 0.01; PLT with MA, the kappa was 0.35. 【Conclusion】 The main manifestations in low coagulation function in children with KMS were mainly thrombocytopenia, lower fibrinogen, and increased fibrinogen degradation-products, and the coagulation factors were normal. Except for Fib and MA, the consistency of other indexes in the detection of coagulation function in children with KMS by TEG and CCT is weak. Some indexes are significantly correlated but others not. Therefore, the 2 test methods are irreplaceable and should be combined to reduce the risk of embolism and bleeding in children.

Objective:To explore the effect of Vancomycin on immune hemolysis and coagulation in children with non-Hodgkin′s lymphoma (NHL), thus providing the basis for the diagnosis and treatment of hemolytic anemia and coagulation dysfunction caused by Vancomycin, and guiding the rational use of drugs in children with NHL.Methods:From January 2018 to January 2019, 31 children with NHL treated with monotherapy of Vancomycin in Beijing Children′s Hospital, Capital Medical University were collected.Plasma samples within 1 week of Vancomycin medication were collected for detecting the anti-Vancomycin antibody by microcolumn gel method.The laboratory diagnostic and coagulation function indexes of hemolytic anemia before and after Vancomycin medication were analyzed using the paired sample t test. Results:Fourteen out of 31 children with NHL were positive for the anti-Vancomycin antibody, and among them, 10 cases had positive direct antiglobulin test (DAT). In NHL children with positive anti-Vancomycin antibody, their red blood cell count (RBC)[(2.75±0.07)×10 12/L vs.(3.18±0.07)×10 12/L], platelet count (PLT)[64.29±14.87)×10 9/L vs.(91.36±16.84)×10 9/L] and hematocrit (HCT)[(23.02±0.83)% vs.(29.19±1.98)%] were significantly reduced after Vancomycin medication than those before treatment (all P<0.01). On the contrary, total bilirubin (TB) [(51.96±15.52) μmol/L vs.(39.34±13.40) μmol/L], direct bilirubin (DB)[(31.30±13.98) μmol/L vs.(26.38±12.61) μmol/L], indirect bilirubin (IB)[(21.81±2.89) μmol/L vs.(13.75±1.63) μmol/L] and lactate dehydrogenase (LDH)[(208.6±16.85) U/L vs.(60.93±16.00) U/L] in them were significantly enhanced after Vancomycin medication than those before treatment (all P<0.05). Prothrombin time (PT)[(13.94±0.58) s vs.(11.66±0.30) s] and partial thromboplastin time (APTT)[(36.01±2.64) s vs.(28.09±0.98) s] were significantly prolonged in them after vancomycin medication than those before treatment (all P<0.01). A higher international normalized ratio (INR)(1.25±0.05 vs.1.05±0.02) was detected in NHL children with positive anti-Vancomycin antibody after medication ( P<0.000 1). In NHL children with negative anti-Vancomycin antibody, significantly higher PT (12.99±0.35) s vs.(11.82±0.27) s and INR (1.18±0.03 vs.1.07±0.03) were detected after Vancomycin medication (all P<0.000 1), while other indexes were similar before and after treatment. Conclusions:The anti-Vancomycin antibody may cause immune hemolysis and coagulation dysfunction in children with NHL.In order to prevent serious adverse events caused by drug antibodies, comprehensively clinical symptoms should be considered, drug antibodies and laboratory test results should be detected.

Intraoperative hemorrhage is the most common complication of laparoscopic radical gastrectomy,which is also the main cause of conversion to open surgery.With the popularization of laparoscopic surgery technology worldwide,how to complete high-quality surgery and effectively avoid intraoperative or postoperative complications is the goal pursued by all surgeons.Intraoperative hemorrhage in the laparoscopic radical gastrectomy is mainly divided into parenchymal hemorrhage,perigastric vascular injury-induced hemorrhage,lymph node hemorrhage and anastomotic bleeding.Compression,electrocoagulation,vascular clipping and vascular suture repair are the most common treatments for intraoperative hemorrhage.It is necessary to use above methods in clinical work.Proficiency in laparoscopic operation skills,familiarity with perigastric vascular anatomy and variation,and improved teamwork to reduce complications are the key to laparoscopic surgery for gastric cancer.Combined with literature reports,the authors summarize experience in laparoscopic surgery for gastric cancer,discuss the prevention and treatment of hemorrhagic complications during laparoscopic radical gastrectomy.

Objective To explore the clinical efficacy of modified totally laparoscopic intra-gastric surgery for the treatment of submucosal tumors adjacent to the cardia or pylorus.Methods The retrospective crosssectional study was conducted.The clinicopathological data of 48 patients with gastric submucosal tumors adjacent to the cardia or pylorus between September 2014 and March 2018 were collected.There were 22 males and 26 females,aged from 38 to 78 years,with an average age of 58 years.Patients were performed multi-port or singleport modified laparoscopic intra-gastric surgery.Observation indicators:(1) surgical treatments;(2) postoperative recovery;(3) results of postoperative pathological examination;(4) follow-up.Patients were followed up by outpatient examination and telephone interview to detect the postoperative complications and tumor metastasis and recurrence up to June 2018.Measurement data with normal distribution were expressed as Mean±SD and measurement data with skewed distribution were described as M (range).Count data were represented as absolute number or percentage.Results (1) Surgical treatments:48 patients underwent modified totally laparoscopic intra-gastric surgery successfully,including one patient combined with proximal gastrectomy,without conversion to open surgery.Of the 48 patients,43 underwent multi-port modified laparoscopic intra-gastric surgery and 5 underwent single-port modified laparoscopic intra-gastric surgery.The operation time and volume of intraoperative blood loss were 68 minutes (range,45-110 minutes) and 20 mL (range,5-100 mL).The oncologic evaluation of 48 patients:48 patients had complete resection of tumors,without tumor rupture.The tumor diameter and distance from margin to tumor were 32 mm (range,20-40 mm) and 6 mm (range,5-10 mm).(2) Postoperative recovery:the time for initial oral intake and duration of postoperative stay were 2.8 days (rang,1.0-5.0 days) and 5.3 days(range,3.0-11.0 days).There were 4,3,1 and 1 patients complicated with surgical infection,delayed gastric emptying,sub-phrenic hydrops and digestive leakage respectively in the 48 patients.(3) Results of postoperative pathological examination:the distance from tumor margin to gastric cardia or pylorus,tumor diameter,circumferential resection margin were 15 mm (range,0-30 mm),24 mm (range,10-65 mm),6 mm (range,5-10 mm),respectively.Growth patterns of cancer in the 48 patents included 27 of intraluminal type,12 of intermural type,9 of mixed type.Pathological types of 48 patients:there were 26 patients with leiomyoma,9 with gastrointestinal stromal tumor,4 with other rare tumors,2 with carcinoid,2 with mucosa associated lymphoma,2 with inflammatory fibrous polyps,2 with gastritis cystica profunda,1 with ectopic pancreas.(4) Follow-up:41 of the 48 patients were followed up for 3-48 months,with a median follow-up time of 22 months.No tumor recurrence was detected in 37 of 41 patients by 3 times of gastroscopy and no stenosis or dysfunction of cardia or pylorus was detected in 39 patients by 2 times of upper gastrointestinal imaging (one patient undergoing two examinations).During the follow-up,there was no surgery-related complication or tumorspecific death.Conclusion Modified totally laparoscopic intra-gastric surgery is safe and feasible for the treatment of gastric submucosal tumors adjacent to the cardia or pylorus.

Objective To study the clinical efficacy of Helicobacter pylori (Hp) eradication quadruple therapy combined with Bifidobacterium in the treatment of Hp infection in adolescents.Methods A total of 180 outpatient or hospitalization adolescents with Hp infection in our hospital were randomly divided into Hp eradication quadruple therapy combined with Bifidobacterium group (treatment group,90 cases) and Hp eradication quadruple therapy group (control group,90 cases).The control group was given oral administration of pantoprazole,clarithromycin,amoxicillin,and bismuth potassium citrate,at dose of 40 mg,500 mg,1 000 mg,and 220 mg respectively,at 0.5 h after meal,for twice a day.The treatment group was treated with quadruple therapy plus Bifidobacterium triple viable capsule,at a dose of 630 mg,at 4 hours of morning and evening meals.The two groups were both treated for 14 days.Results The eradication rates of the treatment group and control group were 91.11％ and 62.2％,respectively (P ＜ 0.05).The adverse reactions were mild,including nausea,abdominal distension,diarrhea,constipation,bitter mouth,etc.,and their incidences in the treatment group and the control group was 6.67％ and 21.11％,respectively (P ＜ 0.05).Conclusion Hp eradication quadruple therapy combined with Bifidobacterium might improve the Hp eradication rate and reduce the incidence of adverse reactions in the treatment of Helicobacter pylori infection in adolescents.

Objective To study the clinical efficacy of Helicobacter pylori (Hp) eradication quadruple therapy combined with Bifidobacterium in the treatment of Hp infection in adolescents.Methods A total of 180 outpatient or hospitalization adolescents with Hp infection in our hospital were randomly divided into Hp eradication quadruple therapy combined with Bifidobacterium group (treatment group,90 cases) and Hp eradication quadruple therapy group (control group,90 cases).The control group was given oral administration of pantoprazole,clarithromycin,amoxicillin,and bismuth potassium citrate,at dose of 40 mg,500 mg,1 000 mg,and 220 mg respectively,at 0.5 h after meal,for twice a day.The treatment group was treated with quadruple therapy plus Bifidobacterium triple viable capsule,at a dose of 630 mg,at 4 hours of morning and evening meals.The two groups were both treated for 14 days.Results The eradication rates of the treatment group and control group were 91.11％ and 62.2％,respectively (P ＜ 0.05).The adverse reactions were mild,including nausea,abdominal distension,diarrhea,constipation,bitter mouth,etc.,and their incidences in the treatment group and the control group was 6.67％ and 21.11％,respectively (P ＜ 0.05).Conclusion Hp eradication quadruple therapy combined with Bifidobacterium might improve the Hp eradication rate and reduce the incidence of adverse reactions in the treatment of Helicobacter pylori infection in adolescents.