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Sun Z.-B.,Institute of Urban Meteorology | Tao Y.,Lanzhou University | Cui M.-M.,Beijing Emergency Medical Center | An X.-Q.,China Meteorological Administration | Zhang D.-S.,Beijing Meteorological Service Center
Zhongguo Huanjing Kexue/China Environmental Science

To investigate the impact of emission reduction and traffic restrictions measures before and after the 2008 Olympic Games in Beijing on public health, which had cardiovascular and cerebrovascular diseases. Air quality and the hospitalizations of cardiovascular and cerebrovascular diseases from Beijing Emergency Medical Center were collected from July to September during 2006~2010 in this paper. Using time series method of nonparametric generalized additive model (GAM) by controlling the long-term trend, "week effect", the influence of meteorological factors, to establish the relationship between the concentrations of PM2.5 and hospitalizations including gender and years stratification. There is significantly associations between PM2.5 and different cardiovascular and cerebrovascular disease with a lag of 0~2d. From July to September during 2006 to 2010, the relative risks (RR) of different groups are least in 2008 and are largest in 2009.Increases of 0.0%, 0.18% and 0.07% in 2008, 3.43%, 2.10% and 2.97% in 2009 for total, male and female cardiovascular and cerebrovascular diseases hospitalizations were associated with increase of 10 μg/m3 in PM2.5. In addition, it is very important for reducing the risk of cardiovascular and cerebrovascular diseases in Beijing by taking the related measures during the Olympic Game in 2008. ©, 2015, Chinese Society for Environmental Sciences. All right reserved. Source

An S.,Peking University | Zhang J.-J.,Peking University | Zhang J.-J.,Beijing Emergency Medical Center | Zhang P.-X.,Peking University | And 6 more authors.
Chinese Medical Journal

Background Road traffic injuries (RTIs) are a worldwide issue associated with increasing development and motorization. However, statistical studies do not include any analyses of Beijing's geriatric population. Using data from the Beijing Emergency Medical Center, we present the main characteristics of traffic injuries involving the elderly in Beijing. We also provide objective information for those concerned with the safety of traffic systems and the prevention of traffic injuries. Methods In a longitudinal, retrospective study, data were collected on 1706 victims aged 65 years and older who sustained traffic injuries in Beijing between 2004 and 2010. Personal information, time of injury event, emergency care response time, road user type, striking vehicle type, injury site, and severity of injury were analyzed using χ2 tests and Logistic regression analysis. Results The annual rate of traffic injuries was 21.80 per 100 000 elderly people in Beijing, and the morbidity rate decreased from 2004 to 2010 (P <0.001). The mean age was (72.92±5.67) years, and 911 (53.40%) of the victims were male. The majority of victims sustained head and lower limb injuries and were classified as being of medium severity. Traffic collisions occurred most frequently in the daytime excluding rush hours; these collisions included being hit by a car (85.64%) and pedestrian victim injuries (79.19%). Our statistical analysis found three factors for injury severity: abdominal injuries (P <0.001), number of injury sites (P=0.027), and head injuries (P=0.034). The decline in traffic injuries is due to a decrease in victims aged 65-74 years and pedestrians; the severity of RTIs also decreased. Conclusions This study highlights the declining trend in traffic injuries among older adults in Beijing. However, traffic injuries remain a serious public health problem for the elderly and effective measures are required to reduce their incidence. Source

Chen S.,Capital Medical University | Sun H.,Capital Medical University | Sun H.,Beijing Municipal Key Laboratory of Clinical Epidemiology | Lei Y.,Beijing Emergency Medical Center | And 7 more authors.

Background and purpose:Early and accurate diagnosis of stroke by emergency medical service (EMS) paramedics is critical for reducing pre-hospital delays. The Los Angeles pre-hospital stroke screen (LAPSS) has been widely used as a validated screening tool for early identifying stroke patients by EMS paramedics. However, validation of LAPSS has never been performed in Chinese stroke population. This study is aimed to verify the LAPSS for early identifying stroke patients in a Chinese urban EMS.Methods:76 paramedics of five urban first aid stations attached to Beijing 120 EMS were involved. The paramedics were trained by professionals to quickly screen patients based on LAPSS. Potential "target stroke" individuals who met the base LAPSS screen criteria were identified. Sensitivity and specificity analyses of the LAPSS were calculated.Results:From June 10, 2009 to June 10, 2010, paramedics transported a total of 50,220 patients. 1550 patients who met the baseline screen criteria were identified as the potential "target stroke" population. 1130 patients had the completed LAPSS information datasheet and 997 patients were clinically diagnosed with stroke. The average time of completing the LAPSS was 4.3±3.0 minutes (median, 5 minutes). The sensitivity and specificity of the LAPSS in this study was 78.44% and 90.22%, respectively. After adjusting for age factor by excluding patients of >45 years old, the sensitivity was significantly increased to 82.95% with specificity unchanged.Conclusion:The paramedics of Beijing 120 EMS could efficiently use LAPSS as a screening tool for early identifying stroke patients. While the sensitivity of LAPSS in Chinese urban patient population was lower than those reported in previous LAPSS validation studies, the specificity was consistent with these studies. After excluded the item of "Age>45 years", the sensitivity was improved. © 2013 Chen et al. Source

Shao F.,Capital Medical University | Li C.S.,Capital Medical University | Liang L.R.,Capital Medical University | Li D.,Beijing Emergency Medical Center | Ma S.K.,Red Cross

Aim: The purpose of this study was to assess the outcome of out-of-hospital cardiac arrests (OHCAs) in Beijing, China. Methods: In this prospective study, data were collected according to the Utstein style on all cases of OHCA that occurred between January and December 2012 in urban areas covered by Beijing Emergency Medical Services (EMS). The cases were followed-up for 1 year. Results: Out of the 9897 OHCAs recorded, cardiopulmonary resuscitation (CPR) was initiated in 2421 patients (24.4%). Among the CPR-receivers (. n=. 2421), 1804 patients (74.5%) had collapsed at home, while 375 patients (15.5%) at a public place. The average time interval from call to EMS arrival at the collapse location was 16. min (range, 4-43. min). Of the 1693 OHCA cases with cardiac aetiology, 1246 cases (73.6%) were witnessed, and basic CPR was performed by bystanders before arrival of the EMS personnel in 193 patients (11.4%). Of the OHCAs with cardiac aetiology, 1054 patients (62.3%) had asystole, 131 patients (7.7%) had shockable rhythms, restoration of spontaneous circulation was achieved in 85 patients (5.0%), 71 patients (4.2%) were admitted to the hospital alive, and of the 22 patients (1.3%) who were discharged alive, 17 patients (1%) had good neurological outcomes. At 1 year post-OHCA, 17 patients were alive. Conclusion: In the urban areas of Beijing with EMS services, survival rate after OHCA was unsatisfactory. Improvements are required in every link of the 'chain of survival'. © 2014 Elsevier Ireland Ltd. Source

Xu T.,Peking Union Medical College | Wang Z.,Beijing Emergency Medical Center | Li T.,Peking Union Medical College | Pei V.,University of Maryland, Baltimore | And 4 more authors.
Emergency Medicine Journal

Background: Rescue efforts for earthquakes in remote plateau regions require large numbers of professional personnel to be transported from various lowland regions for relief work. Unacclimatised rescuers to high-altitude regions commonly suffer acute mountain sickness (AMS), which makes relief efforts inefficient and potentially dangerous. Methods: In this study, the AMS symptoms of 78 unacclimatised rescue workers for the Yushu earthquake from Beijing were recorded using the Lake Louise AMS self-report questionnaire. Heart rate and blood oxygen were recorded at rest before departure, during rest and during activity. Results: After ascending, resting heart rate increased from mean 75.87 bpm to 87.45 bpm and resting SpO2 decreased from an average of 98.51% to 90.35% (both p<0.001). The mean Lake Louise AMS Score for participants was 3.1 (95% CI 2.6 to 3.6). 29 members (37.2%) met the diagnosis criteria for AMS. 16 members (20.5%) were evacuated early due to acute AMS (AMS score ≥5). Rhodiola was offered on a voluntary basis as a prophylactic measure but shown to be ineffective. Conclusion: Given the ineffectiveness of prophylactic measures and the urgency of such disaster situations, it is unrealistic to mobilise rescue teams from lowland regions for immediate relief efforts. A local disaster plan specific to plateau earthquakes needs to be developed with local personnel for timely and efficient relief. Copyright © 2013 BMJ Publishing Group Ltd and the College of Emergency Medicine. Source

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