Objective To discuss the application of the"rotating guidewire and correcting the filter recovery hook direction technique"("rotation-correction loop technique"for short),a technique invented by the authors in clinical practice,in the retrieval of complex inferior vena cava filter(IVCF),and to discuss its technical skills and advantages.Methods The clinical data of 417 patients carrying an IVCF,who were admitted to the Department of Vascular Surgery of Second Hospital of Shanxi Medical University of China to retrieve IVCF between January 2022 and December 2022,were retrospectively analyzed.Taking the time spent on the retrieval of IVCF and the intraoperative radiation dose as the evaluation indicators,the advantages and disadvantages of the standard filter retrieval technique,the"rotation-correction loop technique"and the other loop-assisted techniques were compared.Results Both the intraoperative radiation dose and the time spent on the retrieval of IVCF using"rotation-correction loop technique"were remarkably lower than those of other loop-assisted techniques(P＜0.000 1).Conclusion For the retrieval of complex IVCF,especially for the IVCF which is heavily tilted and/or its recovered hook is attached to the vascular wall,the use of"rotation-correction loop technique"can shorten the time spent on the the retrieval of IVCF and reduce the intraoperative radiation dose.This technique carries high safety and practicability,the device is simple and it can be manipulated by single physician,which is conducive to clinical application and promotion.(J Intervent Radiol,2024,33:289-294)

Objective:To understand the composition of respiratory virus spectrum in hospitalized children with acute respiratory infections in Guilin City from 2021 to 2022, and to explore the epidemic characteristics of different respiratory viruses.Methods:Information of a total of 638 hospitalized children with acute respiratory infections (ARI) syndrome under the age of 14 years in Guilin city, Guangxi from September 2021 to October 2022 was collected as research data. The collected pharyngeal swabs from pediatric patients were subjected to real-time fluorescence reverse transcription polymerase chain reaction for nucleic acid testing, screening for 15 common respiratory viruses, and analyzing the virus spectrum characteristics of hospitalized pediatric patients with acute respiratory infections.Results:Among the 638 specimens, 365 were tested positive for at least one virus, with a positive rate of 57.21% (365/638). The detection rate for two or more viruses was 12.85% (82/638). There were 12 types of viruses detected, and the difference in virus detection rates among different seasons was statistically significant (P<0.002). The virus positive detection rate of samples from different age groups was the highest in the 0-2-year old group (40.66%), followed by the 3-5-year old group (34.80%) and the 6-year and older group (24.54%).Conclusions:During the period from September 2021 to October 2022, all 12 respiratory viruses were prevalent in Guilin area, with obvious summer peak as characteristics. It is suggested that corresponding prevention and control measures should be focused on pathogens that may cause acute respiratory infections in children during the local summer to prevent and control the spread and prevalence of respiratory infections.

Accurate and rapid diagnosis of infectious diseases can effectively prevent their spread and promptly curb the epidemic hazards. Multiplexed point-of-care testing (x-POCT) technology can effectively avoid misdiagnosis caused by the detection of one single target and achieve rapid screening and timely control of multiple infectious diseases. Research progress and the latest applications of x-POCT including x-POCT assay methods for different targets in the diagnosis of infectious diseases and their pathogens are summarized in this review. The paper-based, microfluidic chip-based, and microdroplet-based device platforms of x-POCT, and eventually the challenges and future perspectives of x-POCT, especially progress on the effective infectious disease surveillance network establishment under One Health concept are highlighted.

Objective:To compare the clinical features between chronic active Epstein-Barr virus infection(CAEBV) and infectious mononucleosis(IM)in adult patients.Methods:Clinical data from 56 adult IM patients and 14 adult CAEBV patients admitted in the First Affiliated Hospital of Nanjing Medical University during January 2011 to December 2019 were enrolled. Clinical manifestations, laboratory indicators, treatment and outcomes were compared between two groups. Chi-square test and Mann-whitney U test were used to analyze data. Results:The average age of CAEBV patients was higher than that of IM patients [36.0(23.8, 50.5)years vs. 19.0(17.3, 22.8) years; U=90.0, P<0.05]. The symptoms of sore throat, throat congestion, tonsilla enlargement and lymphadenopathy in IM group were more common than those in CAEBV group( χ2=14.088, 16.875, 31.855 and 10.938, all P<0.01). However, the incidence of pulmonary infection, sleepiness/dysphoria and splenomegaly in CAEBV group were significantly higher than those in IM group( χ2=17.217, 5.809 and 6.254, P<0.05 or <0.01). The white blood cell counts, hemoglobin levels, platelet counts, alanine aminotransferase(ALT) and albumin in CAEBV group were significantly lower than those in IM group( U=47.0, 49.5, 158.5, 173.0 and 263.5, all P<0.01). The levels of neutrophil ratio, C-reactive protein, serum ferritin and EBV DNA load in CAEBV group were significantly higher than those in IM group( U=145.0, 140.0, 128.5 and 115.0, P<0.05 or <0.01). The proportions of CD3 + T cell counts and CD8 + T cell counts in CAEBV group were significantly lower compared to those in IM group( U=42.0 and 24.5, P<0.01); the proportions of CD4 + T cell counts, the CD4 + T/CD8 + T cell counts ratio and B lymphocytes in CAEBV group were significantly higher compared to those in IM group( U=29.0, 23.5 and 34.5, P<0.01). Fifty-six IM patients were all cured and discharged from hospital. In CAEBV group, 8 cases died, 3 cases were improved and 3 cases lost follow-up. Conclusions:Patients with IM represent a favorable prognosis, while the prognosis of CAEBV is relatively poor and complication with HLH may occur. For older patients with EBV infection complicated with pulmonary infection, lethargy/irritability, attention should be paid to monitor blood routine, liver function, serum EBV DNA load and peripheral blood lymphocyte subsets.

Objective:To establish a real-time fluorescent quantitative PCR for the detection of torque teno virus types 7 (TTV7), 8 (TTV8) and 10 (TTV10) and analyze its performance in clinical sample detection.Methods:Specific primers were designed based on the gene sequences of TTV7, TTV8 and TTV10 in GenBank. Recombinant plasmids of pMD19-T-TTV7, pMD19-T-TTV8 and pMD19-T-TTV10 were constructed and used as positive standard control to establish a real-time fluorescent quantitative PCR based on FAM-Eclipse probe method. The specificity and sensitivity of the established method were evaluated. Moreover, it was validated in terms of clinical sample detection.Results:The standard curve equations of the real-time fluorescent quantitative PCR for detecting TTV7, TTV8 and TTV10 were y=-0.340 2 x+ 114.780 0 ( R2=0.998 8), y=-0.351 1 x+ 114.940 0 ( R2=0.995 3) and y=-0.348 9 x+ 115.020 0 ( R2=0.991 7), respectively, and there was no cross-reaction with other viruses. The detection sensitivity of the established method for TTV7, TTV8 and TTV10 were 108 copies/μl, 84 copies/μl and 98 copies/μl, and the positive detection rates in clinical pediatric serum samples were 10.9%, 2.1% and 4.3%, respectively. Conclusions:The established real-time fluorescent quantitative PCR for detection of TTV7, TTV8 and TTV10 was featured by strong specificity and high sensitivity, which could be used for rapid TTV detection in clinical serum samples.

Objective:To study and analyze the application effect of risk prevention and quality control nursing in peritoneal dialysis patients with renal failure.Methods:From January to December 2019, a total of 86 patients with renal failure in the Affiliated Hospital of Jining Medical College were recruited as the research objects by convenient sampling method. All the objects were divided into the observation group (43 cases) and the control group (43 cases) by the random number table method. The control group was treated with traditional risk prevention and control nursing, while the observation group was treated with risk prevention and control quality control nursing. The changes of albumin, hemoglobin, creatinine, blood urea nitrogen were compared between the two groups before and after intervention, and the incidence of complications such as peritonitis, catheter outlet infection, water retention and hypokalemia were compared between the two groups.Results:After the intervention, the albumin and hemoglobin levels of the observation group were higher than those of the control group, and the levels of creatinine and urea nitrogen in the observation group were lower than those in the control group, and the differences were statistically significant ( P<0.01) . During the intervention, the complication rate of the observation group was 23.26% (10/43) , which was lower than 46.51% (20/43) of the control group, and the difference was statistically significant ( P<0.05) . Conclusions:Risk prevention and quality control nursing in peritoneal dialysis patients with renal failure can improve renal function and reduce the occurrence of complications.

Objective: To detect the clinicopathological features, immunophenotype, diagnosis, and differential diagnosis of composite pheochromocytoma(CP). Methods: Five cases of CP were collected at Zhejiang Provincial People′s Hospital from January 2011 to January 2019. The clinical, radiological, histologic, immunohistochemical and outcome data were analyzed; the diagnosis and differential diagnosis were discussed. Results: The patients′ age range was 52-68 years (mean 59 years, median 54 years), There were 4 males and 1 female, and the male to female ratio was 4∶1. Tumor size was 3-4 cm (mean 3.6 cm, median 3.5 cm). The most common clinical manifestation was adrenal mass. Histologically, the classical feature was two distinct morphologic components, one with tumor cells arranged in irregular nests, and with fine granular and basophilic oramphophilic cytoplasm; the other was composed of scattered ganglion cells in the background of Schwann cells organized in interwoven bundles. The components of pheochromocytoma expressed PHOX2B(5/5), synaptophysin (5/5), CgA (5/5), the sustentacular cells expressed S-100 protein; the components of ganglioneuroma expressed S-100 protein (5/5), NF (5/5), the ganglion cells were weakly positive for PHOX2B, synaptophysin and CgA. All the cases were surgically resected and all patients were free of recurrence at follow-up. Conclusions CP is rare adrenal tumor, and it has typical histologic features but no specific clinical manifestations. Attention should be paid to its characteristic histomorphology with the use of PHOX2B, CgA, synaptophysin and S-100 protein immunohistochemistry that is helpful for its diagnosis.

Objective To evaluate 3.0T high resolution magnetic resonance (HRMRI) scanner for determining the carotid plaque vulnerability.Method Fifteen inpatients with carotid plaque stenosis were enrolled.The stenosis rate confirmed by Doppler ultrasound was 50％-99％ (excluding those with 100％ occlusion of the carotid artery).Head and neck coil 24 (HNC 24) was used for extracranial carotid artery plaque scan.Results There was no statistically significant difference between pathology and 3.0T HRMRI in the detemination of carotid plaque composition (P =0.546)and carotid artery stenosis rate (P =0.289).HRMRI showed good consistency with pathology in detecting intraplaque hemorrhage (Kappa =0.816) and lipid necrosis core (Kappa =0.771),and normal consistency with pathology in detecting calcification (Kappa =0.674).The highest sensitivity (87.23％) and the highest specificity (97.77％) of intraplaque hemorrhage were detected for the core of lipid necrosis.Conclusion The 3.0T high resolution magnetic resonance detailed analysis of extracranial carotid plaque composition,morphology,luminal stenosis,plaque lumen and wall area data for assessment.

Objective To investigate the protective mechanism of MEK1/2 inhibitor PD98059 on ox-LDL induced injury of human umbilical vein endothelial cells (HUVEC),and its influence on the expression of LOX-1.Methods HUVEC damage models were established by using ox-LDL and were treated with PD98059 later,divided into the negative control group,the ox-LDL group,the positive control group and the PD98059+ox-LDL group.The effect of inhibition of MEK1/2 on ox-LDL induced HUVEC damage was measured.Results Compared with the negative control group,the levels in the ox-LDL group of LOX-1,pMEK1/2,RhoA,ROCK1,ROCK2,TNF-α and IL-6 were increased significantly,the proliferations of HUVEC and the productions of NO were decreased (P＜0.05).Compared with the ox-LDL group,the levels in the positive control group and the PD98059+ox-LDL group of pMEK1/2,RhoA,ROCK1,ROCK2,TNF-α and IL-6 were decreased,the proliferation of HUVEC and the production of NO were increased (P＜0.05).Conclusion PD98059 inhibit the MEK1/2 signaling pathway to suppress the ox-LDL induced damage of HUVEC by decreasing the expression of LOX-1.

Objective To explore the efficacy of laparoscopic liver resection (LLR) in the treatment of patients with hepatocellular carcinoma (HCC) at complicated region. Methods Clinical data of 89 patients with HCC at complicated region treated in West China Hospital of Sichuan University between February 2015 and February 2017 were analyzed retrospectively. These patients were divided into LLR group and open liver resection group (OLR group) according to different operative procedures. There were 36 patients in LLR group, including 27 males and 9 females, with an average age of (54±13) years old. There were 53 patients in OLR group, including 44 males and 9 females, with an average age of (52±11) years old. The informed consents of all patients were obtained and the local ethical committee approval was received. Perioperative conditions and postoperative quality of life score in both groups were compared using t test or Kruskal-Wallis rank sum test, and survival analysis was conducted using Kaplan-Meier test and Log-rank test. Results The length of operation was (268±89) min in LLR group, significantly longer than (210±74) min in OLR group (t=3.365, P<0.05). The postoperative length of hospital stay was (6.2±1.2) d in LLR group, significantly shorter than (7.2±2.3) d in OLR group (t=-2.347, P<0.05). The operation expenses was (19.1±9.3) thousand RMB in LLR group, which was significantly higher than (6.1±1.7) thousand RMB in OLR group (t=10.425, P<0.05). The score of daily activity, accessory symptoms of HCC and score of quality of life were (25±4), (64±7) and (151±20) points in LLR group, significantly higher than (23±3), (60±7) and (144±9) points in OLR group, respectively (t=2.278, 2.375, 2.720; P<0.05). The overall survival, disease-free survival were respectively 93.0%, 78.0% in OLR group, and respectively 97.0%, 79.0% in LLR group, where no significant difference was observed (χ2=0.276, 0.029; P>0.05). Conclusions Compared with OLR, LLR can obviously shorten the length of hospital stay and improve the postoperative quality of life for patients with hepatocellular carcinoma (HCC) at complicated region. It is safe and feasible.