Objective To explore the association of the magnitude of systolic blood pressure reduction(SBPr)with post-procedure 24 h symptomatic intracranial hemorrhage(sICH)and 90-day clinical outcomes in patients with successful endovascular thrombectomy(EVT).Methods Consecutively registered patients with EVT caused by anterior circulation large vessel occlusion stroke(LVOS)in the First Affiliated Hospital of Wannan Medical College(Yijishan Hospital)between July 2015 and April 2023 and patients with successful reperfusion were analyzed.Demographic data,medical history(hypertension,diabetes),the trial of Org 10172 in acute stroke treatment(TOAST)classification,the baseline National Institutes of Health Stroke Scale(NIHSS)score and the baseline Alberta stroke early CT(ASPECT)score of patients were collected.And procedure related parameters(including time from onset to puncture,time from onset to reperfusion,occluded site[internal carotid artery,M1 segment of middle cerebral artery,M2 segment of middle cerebral artery],collateral circulation status[determined based on preoperative occluded angiography showing the range of collateral circulation in the occluded vessel area,defined as good collateral circulation with a reflux range of ≥ 50％and poor collateral circulation with a reflux range of＜50％]),immediate postoperative reperfusion status(evaluated using the modified thrombolysis for cerebral infarction[mTICI]grading,successful reperfusion defined as mTICI grading of 2b-3),24 hours sICH,and 90 days clinical outcomes(evaluated using the modified Rankin scale score at 90days after EVT,with a score ≤ 2indicating a good prognosis and a score＞2indicating a poor prognosis).SBPr was defined as(baseline SBP-mean SBP)/baseline SBP x 100％.According to the the magnitude of SBPr,SBPr is divided into 5 categories(＜-10％,-10％-10％,＞10％-20％,＞20％-30％and＞30％).Based on the clinical outcomes at 90 days and the occurrence of sICH at 24 hours after EVT,patients were divided into a good prognosis group and a poor prognosis group,as well as an sICH group and a non-sICH group.The relationship between SBPr and postoperative 90 days clinical prognosis or sICH was analyzed using a binary Logistic regression model.Subgroup analysis was conducted based on a history of hypertension(yes and no),continuous intravenous hypotensive therapy(yes and no),baseline ASPECT scores(3-5 and 6-10),and collateral circulation status(good and bad).Using a restricted cubic plot to depict the relationship between SBPr and sICH and clinical prognosis at 90days.Results(1)In total,731 patients were included.The median age was 71(62,77)years and 424(58.0％)were men.The median baseline NIHSS score was 14(12,18),the median baseline ASPECT was 9(7,10),405(55.4％)patients achieved 90-day modified Rankin scale score 0-2,and 35 patients(4.8％)developed sICH.(2)Multivariate analysis showed that the older age(OR,1.036,95％CI 1.017-1.056),the higher baseline NIHSS score(OR,1.095,95％CI1.049-1.144),the lower baseline ASPECT score(OR,0.704,95％CI 0.636-0.780),diabetes(OR,1.729,95％CI 1.084-2.758),bad collateral circulation(good collateral circulation vs.bad collateral circulation,OR,0.481,95％CI 0.332-0.696)and SBPr＞30％(SBPr-10％-10％as a reference,OR,2.238,95％CI 1.230-4.071),the higher the risk of poor clinical outcomes at 90 days(all P＜0.05).Continuous intravenous hypotensive therapy is a risk factor for postoperative 24 h sICH(OR,2.278,95％CI 1.047-4.953;P=0.038),while SBPr 20％-30％is associated with a lower risk of postoperative 24 h sICH(SBPr-10％-10％as a reference,OR,0.362,95％CI0.131-0.998;P=0.049).(3)The restrictive cube plot shows that there is a U-shaped relationship between SBPr after EVT and poor clinical outcomes at 90 days,while there is a nearly linear relationship with the occurrence of sICH.The more SBP reduction,the lower the incidence of sICH.(4)In the subgroup analyses,in the non-hypertension history and the good collateral circulation group,SBPr＞30％has a higher risk of poor clinical outcomes compared to SBPr-10％-10％(OR and 95％CI were 2.921[1.000-8.528]and 2.363[1.078-5.183],respectively,with P=0.05 or P＜0.05);After EVT,the group receiving continuous intravenous hypotensive therapy and the baseline ASPECT score 6-10 groups showed a significant correlation between SBPr＞30％and poor clinical outcomes at 90 days(SBPr-10％-10％as a reference,OR and 95％CI were 2.646[1.168-5.993]and 2.481[1.360-4.527],respectively,with P＜0.05).The correlation between SBPr and lower incidence of sICH was only found in the subgroup of poor collateral circulation(SBPr-10％-10％as a reference,SBPr＞20％-30％:OR,0.133,95％CI 0.027-0.652;SBPr＞30％:OR,0.104,95％CI 0.013-0.864;all P＜0.05).Conclusions Among patients who achieved successful reperfusion with EVT,SBPr might be related to a worse functional outcome at 90 days and sICH 24 h after operation.However,the relationship may exhibit significant heterogeneity across different subgroups.Baseline ASPECT score,history of hypertension,collateral circulation,and the use of continuous venous hypertension after EVT have been highlighted in individualized blood pressure management after EVT.

Objective To investigate the influencing factors for acute multiple vessels occlusion(MVO)and its impact on the prognosis of patients with anterior circulation acute large vessel occlusion stroke(ALVOS)who achieved successful recanalization after endovascular treatment(EVT).Methods Patients with anterior circulation ALVOS who received successful EVT at the Yijishan Hospital of Wannan Medical College between July 2015 and April 2023 were retrospectively analyzed.Baseline data,including age,sex,onset-to-puncture time(OTP),onset-to-recanalization time(OTR),medical history(including atrial fibrillation,diabetes,hypertension),alcohol and smoking history,admission blood pressure(systolic and diastolic),Alberta stroke program early CT score(ASPECTS),National Institutes of Health stroke scale(NIHSS)score,trial of Org 10172 in acute stroke treatment(TOAST)classification(atherosclerotic type,cardioembolic type,and other etiology types),and 90-day modified Rankin scale(mRS)score were collected.Collateral circulation was assessed based on the degree of contrast agent reflux observed in the occluded arterial supply area during delayed DSA,and patients were classified into poor and good collateral circulation groups.Malignant cerebral edema was defined as a midline shift of ≥5 mm on the follow-up CT scan performed on day 3 post-surgery.The primary endpoint(efficacy indicator)was the 90-day mRS score,with mRS score≤ 2 considered as a good prognosis and mRS score＞2 considered as a poor prognosis.The secondary endpoint(safety indicator)was the 90-day mortality rate.All patients were divided into MVO and non-MVO groups based on whether they had single or multiple intracranial vessel occlusions.Acute MVO was defined as the detection of acute occlusion of other large or medium vessels,in addition to the main vessels(internal carotid artery or M1/M2 segments of the middle crebral artery[MCA]),in CT angiography,MR angiography,or DSA,resulting in ischemia in brain regions distinct from the main occlusion area.Factors that showed statistically significant differences in univariate analysis were further analyzed using multivariate Logistic regression to identify the risk factors for the occurrence of acute MVO and the factors associated with the prognosis of ALVOS patients.Results A total of 846 patients with ALVOS were included,with ages ranging from 26 to 94 years(mean age[69±11]years).The proportion of male patients was 57.2％(484/846).The median admission ASPECTS was 8(7,9)and the median admission NIHSS score was 14(12,18).The incidence of malignant cerebral edema at 3 days post-surgery was 13.4％(112/835),and the 90-day mortality rate was 19.1％(162/846).(1)Among the 846 ALVOS patients,810(95.7％)were in the non-MVO group and 36(4.3％)were in the MVO group.Univariate analysis showed significant differences between the MVO and non-MVO groups in terms of atrial fibrillation,malignant cerebral edema,admission ASPECTS,admission NIHSS scores,TOAST classification,collateral circulation,rate of complete recanalization,and 90-day poor prognosis rate(all P＜0.05).However,there was no statistically significant difference in 90-day mortality between the two groups(P=0.193).Multivariate Logistic regression analysis showed that TOAST classification of cardioembolic type(OR,16.089,95％CI 1.835-141.061,P=0.012)and other etiology types(OR,9.768,95％CI 1.078-88.540,P=0.043)were associated with the occurrence of MVO.(2)Among the 846 ALVOS patients,445 had a good prognosis at 90days,and 401 had a poor prognosis.Univariate analysis showed that,compared to the good prognosis group,the poor prognosis group had a lower proportion of males and smokers,and a higher proportion of patients with older age,higher baseline systolic blood pressure,hypertension,diabetes,and atrial fibrillation(all P＜0.01).Additionally,the poor prognosis group had higher admission NIHSS scores(P＜0.01),lower admission ASPECTS,lower rates of good collateral circulation and complete recanalization,higher rates of malignant cerebral edema and MVO,and statistically significant differences in TOAST classification distribution(all P＜0.01).Multivariate Logistic regression analysis showed that MVO was associated with poor 90-day prognosis in ALVOS patients after EVT(OR,3.368,95％CI 1.149-9.878,P=0.027).Furthermore,older age(OR,1.045,95％CI 1.025-1.066),diabetes(OR,1.719,95％CI 1.080-2.734),higher baseline systolic blood pressure(OR,1.012,95％CI 1.004-1.019),lower admission ASPECTS(OR,0.746,95％CI 0.674-0.826),higher admission NIHSS score(OR,1.115,95％CI 1.070-1.162),without immediate postoperative complete recanalization(OR,0.413,95％CI 0.290-0.592),poor collateral circulation(OR,0.594,95％CI 0.415-0.851),and malignant cerebral edema(OR,6.191,95％CI 3.026-12.670)were all associated with poor 90-day prognosis after EVT in ALVOS patients(all P＜0.05).Conclusions The TOAST classification of cardioembolic type and other etiology types is associated with MVO.MVO is a risk factor for poor outcomes after successful EVT in ALVOS patients.

Objective To evaluate the value of stroke prognostication using age and National Institute of Health Stroke Scale index (SPAN) for outcome after early endovascular treatment for anterior circulation large vessel occlusion.Methods The patients who underwent early endovascular treatment were prospectively,sequentially collected in Yijishan Hospital of Wannan Medical College from December 2014 to September 2017 and Jinling Hospital from March 2014 to March 2017.Individuals whose age in years plus NIHSS score was greater than or equal to 100 were designated as SPAN-100-positive patients,while those with a score less than 100 were designated as SPAN-100-negative patients.We compared the baseline data and perioperative data between the two groups.The 90 days modified Rankin Scale score≤2 was regarded as favorable outcome.Single factor and multivariable Logistic regression analyses were used to determine the association between SPAN-100 and outcomes.Results One hundred and ninety patients were enrolled,20 (10.5％) of which were SPAN-100 positive,and 170(89.5％) were SPAN-100 negative.There were no significant differences between the two groups on postoperative intracerebral hemorrhage and 90 days mortality.Ninety days independence rates were higher in SPAN-100-negative patients (77/170,45.3％) than in SPAN-100 positive patients (4/20,20.0％;x2 =4.681,P =0.030).Multi-factor Logistic regression analysis showed that the higher preoperation systolic pressure (OR =1.030,95％ CI 1.008-1.052,P =0.007),the lower Alberta Stroke Program Early CT Score (OR =1.609,95％ CI 1.056-2.453,P =0.027) and poor collateral circulation(OR =5.714,95％ CI 1.668-19.570,P =0.006) were the independent risk factors of outcomes.Conclusion SPAN-100 is not an independent predictor of favorable outcome after adjusting for factors of outcomes in patients with anterior circulation large vessel occlusion.

Objective: Compare the detection result of blood samples of severe fever with thrombocytopenia syndrome (SFTS) patients using different detection techniques, and observe the dynamic characteristics of the virus specific RNA, IgM antibody and IgG antibody, to provide theoretical basis for selection of diagnostic methods of disease. Methods: Acute phase serum of suspected SFTS cases and convalescent serum samples of lab-confirmed cases were collected. Real-time fluorescence quantitative PCR and enzyme-linked immunosorbent assay (ELISA) were used to detect the virus specific RNA, IgM antibody and IgG antibody. The detection results of different methods, the relationship between positive results and the acquisition time, and the dynamic characteristics of viral nucleic acid and antibodies were analyzed. Results: A total of 87 serum samples of the suspected SFTS patients were collected, the positive rate of virus specific RNA, IgM antibody and IgG antibody were 53.41%, 31.03% and 3.41%, respectively. Among 55 confirmed cases of SFTS, the consistent rate of virus specific RNA and IgM antibody detection methods was 36.36%, and the difference between the two methods was significant (χ²=6.82, P=0.009), kappa=-0.257. The sampling intervals of RNA positive samples were all within 12 days, of which the positive detection rate was highest after 7-9 days, and the difference was statistically significant (χ²=10.35, P=0.016). In 34 SFTS convalescent serum samples, all the nucleic acid tests were negative, the positive rate of IgM antibody was 41.18%, which was not significantly different from the acute phase serum samples (P=1.00). The positive rate of IgG antibody was 94.12%, which was significantly higher than that of acute IgG antibody (0%). The dynamic characteristics of IgM and IgG antibody showed that IgM antibody could be detected on the second day after onset, the latest detection time was 74 days after onset, and the highest absorbance value and antibody detection rate occurred in 30-60 days. The earliest detection time of IgG antibody was 12 days after onset, and the last detection time was 100 days.The detection rate of IgG antibody and absorbance value increased rapidly after 30 days, and maintained in a high level. The detection rate of IgG antibody was 100% in 30-60 days. Conclusions Blood samples taken from SFTS suspected patients within two weeks of onset may be prioritized for detection of viral nucleic acids using Real-time fluorescence PCR or for detection of IgM antibodies by ELISA. Although IgM antibody can be detected 2 days after the onset, the peak appeared much later, so the negative result can’t rule out the diagnosis. IgG antibody has a high seroconversion rate in convalescent samples, and can be used as an auxiliary tool for disease diagnosis.

Objective To assess the feasibility and the value of MR T2 * mapping in valuing the early degeneration of lumbar intervertebral disc quantificationally.Methods 67 patients with low back pain and 21 healthy volunteers were chosen for the study.The two groups both underwent 3.0T MR with the axial T2 WI and T2 * mapping images in 440 discs of L1-S1.We graded all intervertebral discs by Pfirrmann score,and measured the T2 * values of annulus fibrosus(AF) and nucleus pulposus(NP).Results The T2 * values of the anterior AF and the NP among different Pfirrmann grades were statistically significant (P =0.001;P =0.000,respectively).There was significant difference in T2 * values of the anterior AF at L3/L4 between patients and volunteers (P=0.043);The T2 * values of the NP at L2/L3,L3/L4,L4/L5,L5/S1 between the two groups were significant difference (P＜0.05).There was also distinct difference in T2 * values of the posterior AF at L1/L2 and L4/L5 between the two groups (P＜0.05).Conclusion The lumbar intervertebral disc degenerates from the NP to posterior AF,and mainly occurs at L4/L5.The T2 * mapping technique can provide a good basis for diagnosing in lumbar intervertebral disc degeneration.

Objective To analyze the incidence trends and epidemiological characteristics of natural focus and vector borne infectious diseases in Zibo City between 2004 and 2015,and to provide evidence for control and prevention of the diseases.Method Surveillance data of natural focus and vector borne infectious diseases in Zibo City between 2004 and 2015 from the National Disease Reporting Information System were analyzed via descriptive epidemiological methods.Results A total of 10 natural foci and vector borne infectious diseases and 3 287 cases including 55 death cases were reported in Zibo City from 2004 to 2015.The average annual incidence was 6.24/100 000 and the case fatality rate was 1.67％ (55/3 287).The incidence rate increased in recent years after the lowest rate in 2009 (2.83/100 000),and the rate in 2015 was 8.83/100 000.The top three diseases with higher incidence were hemorrhagic fever with renal syndrome (3.44/100 000),brucellosis (1.48/100 000) and tsutsugamushi fever (0.53/100 000).The top three high-prevalence areas with higher incidence were Yiyuan County (13.22/100 000),Zichuan District (9.73/100 000) and Boshan District (6.13/100 000).The cases mainly occurred from March to May and September,October,which accounting for 27.47％ (903/3 287) and 24.64％ (810/3 287),respectively of the total.The 40-59 year-oldage group was the highest,accounting for 48.13％ (1 582/3 287)of the total.And 75.48％ (2 481/3 287) of reported cases were farmers.Conclusions The overall incidence of the natural focus and vector borne infectious diseases in Zibo City has a annual increasing trend in recent years,while the incidence of brucellosis and tsutsugamushi fever have continued to rise since 2004.These diseases have showed a significant seasonal distribution and population distribution.It is necessary to conduct targeted prevention and control strategies.

OBJECTIVETo learn the prevalence of infection of human and animals severe fever with thrombocytopenia syndrome bunyavirus (SFTSV) in Yantai, Shandong province, and to analyze the pathogenic features of SFTSV as well as its relationship between human and animal hosts.

METHODSFrom April to November in 2011, 3 576 serum samples were collected from domesticated animals, including sheep, cattle, pigs, dogs, chickens, in Laizhou and Penglai areas where fever with thrombocytopenia syndrome frequently occurred among local residents. Total SFTSV antibodies and virus-specific nucleic acids of the serum were tested by ELISA and Real time RT-PCR, respectively. SFTSV infection on each animal was observed in different months. 2 590 human serum samples were also collected in Laizhou and Penglai areas, with IgG antibodies tested by ELISA. Virus was isolated with Vero cells from the serum which SFTSV viral nucleic acids were positive. S fragments were amplified by RT-PCR and sequenced, with homology analysis conducted on these sequences.

RESULTSThe overall positive rate of serum samples from animals on the total SFTSV antibodies was 40.24% (1 439/3 576) while the positive rate for specific nucleic acids was 4.56% (163/3 576). The positive rates for SFTSV antibodies were 62.78%, 52.97%, 45.56%, 28.73%, 1.45% and the positive rates for specific nucleic acids were 5.72%, 4.63%, 3.02%, 5.25% and 3.73%, in sheep, cattle, chickens, dogs, pigs, respectively. The antigens/antibodies for SFTSV in animals changed seasonally. The overall positive rate for SFTSV IgG antibody from 2 590 human samples was 5.41%. Thirteen virus strains were isolated from these serum samples (10 strains from human and 3 strains from animals). The nucleotide homology of 13S fragments' sequences ranged from 95.23% to 100.00% and the nucleotide homology with the isolates from other provinces were between 94.72% and 99.13%. The homology was considered to be high.

CONCLUSIONHigh prevalence of SFTSV infections occurred both in human and domestic animals in Yantai city. The nucleotide sequences of SFTSV were highly homologous among human and domestic animals. The findings suggested that domesticated animals might serve as SFTSV proliferation and the hosts for transmission thus should be attached great importance.

Animals ; Antibodies, Viral ; blood ; Bunyaviridae Infections ; epidemiology ; China ; epidemiology ; Humans ; Prevalence ; RNA, Viral ; blood ; Sequence Analysis, RNA

Objective To learn the prevalence of infection of human and animals severe fever with thrombocytopenia syndrome bunyavirus(SFTSV)in Yantai,Shandong province,and to analyze the pathogenic features of SFTSV as well as its relationship between human and animal hosts. Methods From April to November in 2011,3 576 serum samples were collected from domesticated animals,including sheep,cattle,pigs,dogs,chickens,in Laizhou and Penglai areas where fever with thrombocytopenia syndrome frequently occured among local residents. Total SFTSV antibodies and virus-specific nucleic acids of the serum were tested by ELISA and Real time RT-PCR,respectively. SFTSV infection on each animal was observed in different months. 2 590 human serum samples were also collected in Laizhou and Penglai areas,with IgG antibodies tested by ELISA. Virus was isolated with Vero cells from the serum which SFTSV viral nucleic acids were positive. S fragments were amplified by RT-PCR and sequenced,with homology analysis conducted on these sequences. Results The overall positive rate of serum samples from animals on the total SFTSV antibodies was 40.24%(1 439/3 576)while the positive rate for specific nucleic acids was 4.56%(163/3 576). The positive rates for SFTSV antibodies were 62.78%,52.97%,45.56%,28.73%,1.45%and the positive rates for specific nucleic acids were 5.72%,4.63%,3.02%,5.25%and 3.73%,in sheep,cattle,chickens,dogs, pigs,respectively. The antigens/antibodies for SFTSV in animals changed seasonally. The overall positive rate for SFTSV IgG antibody from 2 590 human samples was 5.41%. Thirteen virus strains were isolated from these serum samples(10 strains from human and 3 strains from animals). The nucleotide homology of 13S fragments’sequences ranged from 95.23%to 100.00%and the nucleotide homology with the isolates from other provinces were between 94.72%and 99.13%. The homology was considered to be high. Conclusion High prevalence of SFTSV infections occured both in human and domestic animals in Yantai city. The nucleotide sequences of SFTSV were highly homologous among human and domestic animals. The findings suggested that domesticated animals might serve as SFTSV proliferation and the hosts for transmission thus should be attached great importance.

Objective To study the microbial strains,risk factors and resistance profiles of lower respiratory tract fungal infection in hospital of Zhoushan archipelago area.Methods A total of 204 patients who were hospitalized for lower respiratory tract infection were retrospectively analyzed from May 2008 to April 2011 in Zhoushan archipelago area,and collected 204 fungal strains isolated from confirmed lower respiratory tract fungal infection cases.Chi-square test and Logistic regression analysis were performed.Results Among the 204 fungal strains isolated from lower respiratory tract specimens,110 (53.8％) strains of Candidaalbicans,32 (15.7％) strains of Candida tropicalis,24 (11.8％) strains of Candida glabrata,12 (5.9％) strains of Candida krusei,14 (6.9％) strains of other Candida,and 12 (5.9％) strains of Aspergillus were detected.Logistic regression analysis showed that chronic obstructive pulmonary disease,bacterial pneumonia,long-term use of broadspectrum antibiotics and corticosteroids,endotracheal intubation or incision,old age,exposure in intensive care unit (ICU),and hospitalization ≥7 days were major risk factors (P=0.000,0.001,0.000,0.000,0.012,0.000,0.000,0.000).The resistance rates of isolated Candida against amphotericin B,5-flucytosine,voriconazole,itraconazole and fluconazole were 0,2.1％,4.2％,14.8％ and 22.9％,respectively.Conclusions Candida albicans is the major pathogen of lower respiratory tract fungal infection in hospital of Zhoushan archipelago area,and Candida is sensitive to amphotericin B,5-flucytosine and voriconazole.

Objective To review pulmonary CT imaging features and their correlations with the changes on clinical indexes in patients infected with severe fever with thrombocytopenia syndrome bunyavirus (novel bunyavirus).Methods Clinical data and pulmonary CT findings of 19 patients infected with the novel bunyavirus in Zhoushan Hospital and Daishan Hospital of Zhejiang Province during May 2011 and August 2012 were collected.Infection of the novel bunyavirus was confirmed by Zhejiang Provincial Center for Disease Control and Prevention (CDC).All patients received high resolution CT scanning at initial period,critical period and recovery period.And the changes on WBC,platelet (PLT) and lymphocytes (mainly CD4 + T lymphocytes) were observed.Repeated measures analysis of variance and least significant difference (LSD) were performed,and correlation between the changes on clinical parameters and pulmonary imaging was studied.Results In pulmonary CT images,13 out of 19 cases presented groundglass shadow,5 cases presented consolidation shadow,3 cases presented retisculation,5 cases presented pleural thickening and adhesion,and 3 cases presented mediastinal lymphadenopathy.Sixteen patients presented the involvement of bilateral lungs and 3 patients unilateral.Pleural effusion was observed in 11 cases.There were significant differences in WBC,PLT and CD4+T count among initial,critical and recovery periods in 15 patients with obvious lung lesions (F =20.21,28.37 and 32.92,P ＜0.01).And the above indexes dropped to the lowest points during critical period,which were (1.6 ± 0.6) x 109/L,(26.0 ±9.1) x 109/L and (100.0 ± 66.2) x 106/L,respectively.After treatment,pulmonary CT scan showed that the foci were completely absorbed and no sequelae were observed.Conclusion The changes on pulmonary CT imaging are correlated with those of clinical indexes in novel bunyavirus infection,and the prognosis is good if patients receive the appropriate treatment in the early stage.