Objective: To investigate the factors influencing the co-prevalence of allergic rhinitis and obesity among primary and secondary school students in Inner Mongolia, so as to provide a data foundation and theoretical basis for developing targeted intervention measures. Methods: In September and October 2024, a stratified cluster random sampling method was employed to select 139 102 students from 539 schools across 12 leagues/cities and 103 banners/counties in Inner Mongolia Autonomous Region. Participants who were diagnosed with allergic rhinitis by a doctor at least once within one year and had a body mass index ≥ 28 kg/m 2 were considered to have comorbid conditions. Results: The coprevalence rate of allergic rhinitis and obesity among primary and secondary school students in Inner Mongolia was 6.4% (8 931 cases). Lasso-Logistic regression revealed that nonboarding status, higher maternal education, consuming high protein foods ≥1 time daily, occasionally or never eating breakfast, engaging in moderate to vigorous physical activity for ≥60 minutes on fewer than half of holidays, and having been exposed to second hand smoke in person within the past seven days were associated with higher odds ratios for co-prevalence of allergic rhinitis and obesity( OR = 1.23 , 1.22-1.63, 1.20, 1.19, 1.38, 1.35); being female, higher grade level, residence in flag/county/district areas, non only child status, never having consumed a full glass of alcohol, non hypertensive status, and households without pets were associated with lower co-prevalence risks ( OR =0.65, 0.67-0.77, 0.81, 0.87, 0.73, 0.41, 0.68) (all P <0.05). The ROC curve indicated an area under the curve of 0.64 for the predictive model, demonstrating satisfactory discriminatory ability. The calibration curve showed consistency between predicted and actual occurrence probabilities. Conclusions The co-prevalence of allergic rhinitis and obesity among primary and secondary school students in Inner Mongolia is closely associated with demographic characteristics, dietary behaviours, and lifestyle habits. Future prevention and control strategies should prioritize these factors to implement targeted interventions.

Objective To explore the perfusion distribution of vertebral arteries(VA)in healthy adults,and to observe the impact of VA diameter on perfusion distribution based on territorial arterial spin labeling(t-ASL)technique.Methods A total of 228 healthy adult volunteers were prospectively recruited.t-ASL imaging was utilized to analyze VA perfusion patterns in supratentorial region.Bilateral VA diameters,absolute inter-side VA diameter differences,as well as perfusion volumes(PV)supplied by each VA to supratentorial,cerebellar and their combined were recorded.Pearson correlation analysis was performed to analyze the correlations of VA diameters with PVsupratentorial,PVcerebellar and PVsupratentorial+cerebellar.Results Five patterns of distinct perfusion distribution were identified in supratentorial region,leading to participant stratification into 5 groups.Significant differences of absolute inter-side VA diameter differences was found among groups(P＜0.001).The mean bilateral VA diameter,PVsupratentorial,PVcerebellar and PVsupratentorial+cerebellar was(1.94±0.49)mm,(91.77±49.34)cm3,(74.72±27.68)cm3 and(166.49±59.53)cm3,respectively.VA diameter showed low-moderate positive correlations with PVsupratentorial,PVcerebellar and PVsupratentorial+cerebellar(r=0.483,0.179,0.484,all P＜0.001).Conclusion Perfusion imaging of t-ASL could visualize various perfusion distribution forms of VA in supratentorial region.Diameter of VA had certain impact on both spatial distribution characteristics and quantitative perfusion volumes.

Objective: To analyze the prevalence trends of different types of elevated blood pressure and their association with nutritional status among primary and secondary school students in Inner Mongolia from 2019 to 2024, providing references for targeted prevention strategies. Methods: From September 2019 to 2024, a stratified random cluster sampling method was used to select 12 primary and secondary schools from each league city in Inner Mongolia Autonomous Region. A total of 177 108, 137 758, 190 182, 180 084 , 188 056, 180 351 primary and secondary school students (excluding grades one to three of primary school) were included for physical examination. The correlation between their nutritional status and high blood pressure was analyzed based on the basic situation of 129 821 primary and secondary school students who completed a questionnaire survey at the same time in 2024. Statistical analysis was conducted using a Chi-square test and multiple Logistic regression model. Results: From 2019 to 2024, the detection rates of elevated blood pressure were 13.60%, 13.68%, 17.60%, 17.24%, 14.77% and 15.96%, respectively. The rates for isolated systolic hypertension were 4.24%, 5.83%, 7.26%, 7.19%, 6.24% and 6.93%; isolated diastolic hypertension rates were 6.38%, 4.99%, 6.23 %, 6.41%, 5.39% and 5.66%; and combined systolic and diastolic hypertension rates were 2.97%, 2.86%, 4.11%, 3.65%, 3.14 % and 3.36%. Multivariate Logistic regression analysis showed that girls, junior high school, senior high school, overweight, and obesity were positively associated with elevated blood pressure risk ( OR =1.27, 1.25, 1.32, 1.66, 3.07, all P <0.05); conversely, county residence, Mongolian ethnicity, and other ethnicities showed negative associations ( OR =0.90, 0.93, 0.90, all P <0.05). Conclusions Overweight and obesity among children and adolescents are closely related to various types of elevated blood pressure. Prevention strategies should prioritize effectively controlling weight issues among children and adolescents, thereby effectively reducing the incidence of elevated blood pressure.

Objective To explore the perfusion distribution of vertebral arteries(VA)in healthy adults,and to observe the impact of VA diameter on perfusion distribution based on territorial arterial spin labeling(t-ASL)technique.Methods A total of 228 healthy adult volunteers were prospectively recruited.t-ASL imaging was utilized to analyze VA perfusion patterns in supratentorial region.Bilateral VA diameters,absolute inter-side VA diameter differences,as well as perfusion volumes(PV)supplied by each VA to supratentorial,cerebellar and their combined were recorded.Pearson correlation analysis was performed to analyze the correlations of VA diameters with PVsupratentorial,PVcerebellar and PVsupratentorial+cerebellar.Results Five patterns of distinct perfusion distribution were identified in supratentorial region,leading to participant stratification into 5 groups.Significant differences of absolute inter-side VA diameter differences was found among groups(P＜0.001).The mean bilateral VA diameter,PVsupratentorial,PVcerebellar and PVsupratentorial+cerebellar was(1.94±0.49)mm,(91.77±49.34)cm3,(74.72±27.68)cm3 and(166.49±59.53)cm3,respectively.VA diameter showed low-moderate positive correlations with PVsupratentorial,PVcerebellar and PVsupratentorial+cerebellar(r=0.483,0.179,0.484,all P＜0.001).Conclusion Perfusion imaging of t-ASL could visualize various perfusion distribution forms of VA in supratentorial region.Diameter of VA had certain impact on both spatial distribution characteristics and quantitative perfusion volumes.

Objective: To analyse the correlation between unhealthy lifestyles and anxiety symptoms among high school students in Inner Mongolia Region, so as to provide a scientific basis for the prevention of anxiety symptoms among high school students. Methods: From September to November 2023, 35 362 high school students were selected by stratified cluster random sampling method from 12 cities (103 counties) in Inner Mongolia Region, and the survey was conducted by using the questionnaire on student health status and influencing factors. The χ2 test and multivariate Logistic regression analyses were used to determine the influencing factors of anxiety symptoms. Results: The total number of students with anxiety symptoms was 2 747, and the detection rate of anxiety symptoms was 7.77%. The results of multivariate Logistic regression analyses showed that female students, father having higher education background, never eating breakfast, being overweight and obese, sleeping <8 h/d, being scolded by parents in the past 30 days, and depressive symptoms were positively correlated with the anxiety symptoms of the high school students (OR=1.31, 1.23, 1.53, 1.14, 1.22, 1.51,28.92); nonsmoking, having no alcohol consumption, no Internet addiction and no use of sedatives without doctors permission were all negatively correlated with anxiety symptoms of high school students (OR=0.84, 0.73, 0.57,0.40) (P<0.05). Conclusions Anxiety symptoms of high school students are closely related to unhealthy lifestyle. Measures should be taken to improve unhealthy lifestyle, so as to reduce the occurrence of anxiety symptoms in high school students.

Objective To explore the clinical manifestations and epidemiological profiles of hospitalized infants with Bordetella pertussis infection and to improve the knowledge for its early diagnosis and treatment.Methods Using a retrospective analysis method,the data of 142 hospitalized infants with Bordetella pertussis infection in Shenzhen Children's Hospital from 2011 to 2013 were collected,which was confirmed by a real-time polymerase chain reaction(PCR) of nasopharyngeal secretion.The SPSS 16.0 software was used for statistical analysis.Results Of the 142hospitalized infants with Bordetella pertussis infection,the ratio of male to female was 2.1∶ 1.0 (96/41 cases).Ninetythree (65.5％) cases were aged less than 3 months old,26 cases (18.3％) were 3-6 months old and 23 cases (16.2％) were 6-36 months old.One hundred and twenty-six (88.7％) patients were unvaccinated or incompletely vaccinated.The most common clinical manifestation was paroxysmal cough which accounts for 104/142 (73.2％) cases,and 6 cases of which had roaring(4.2％).Peripheral blood WBC level of 83 cases increased,and 75 (90.4％) cases were lymphocytosis.The positive rate of X-ray was 60.6％.Eighty-one cases were complicated with bacteria,respiratory virus or mycoplasma pneumonia infection.There were significant differences in symptom of fever and infection of respiratory tract pathogen among 3 groups.The symptom of fever in the group aged less than 3 months old group was significantly lower than the other 2 groups (x2 =11.45,P ＜ 0.01 ;x2 =34.56,P ＜ 0.01),and 6-36 months old group was significantly higher than the other 2 groups(x2 =7.590,P ＜ 0.01 ;x2 =6.928,P ＜ 0.01).Conclusions Bordetella pertussis is an important pathogen for the infants with persistent cough,especially in unvaccinated or incompletely vaccinated infants,but the clinical manifestation and signs of pertussis are atypical,which may lead to a misdiagnosis and delay proper treatment.As a rapid and sensitive method of detecting Bordetella pertussis,PCR may be used for early diagnosis.