Resumo Fundamento A doença cardiovascular (DCV) é uma série de doenças que afetam o coração ou os vasos sanguíneos. Objetivos Avaliar a relação entre os níveis de pressão arterial (PA) definidos pelo American College of Cardiology/American Heart Association (ACC/AHA) de 2017 diretriz e risco de DCV/doença cardiovascular aterosclerótica (DCVA) para pessoas de meia-idade e idosos na China. Métodos Um total de 6.644 pessoas de meia-idade e idosas do Estudo Longitudinal de Saúde e Aposentadoria da China CHARLS (China Health and Retirement Longitudinal Study) foram finalmente incluídas. De acordo com a diretriz ACC/AHA de 2017, todos os indivíduos foram divididos em quatro grupos: PA normal, PA elevada, hipertensão estágio 1 e hipertensão estágio 2. O desfecho deste estudo foi considerado o risco de DCV e DCVA. Modelos de regressão COX univariados e multivariados foram adotados para examinar a relação da classificação de PA ACC/AHA de 2017 com o risco de DCV. Modelos de regressão logística univariada e multivariada foram utilizados para investigar a associação entre os níveis de PA e o risco de DCVA. Foram realizadas análises de subgrupos baseadas em idade, sexo e uso de medicamentos anti-hipertensivos. P<0,05 foi aceito como estatisticamente significativo. Resultados Após ajustar todas as covariáveis, em comparação com pacientes de meia-idade e idosos com PA normal, descobrimos que pacientes com hipertensão estágio 1/2 estavam associados a um maior risco de DCV, separadamente. Simultaneamente, também observamos uma associação positiva entre indivíduos com PA elevada, hipertensão estágio 1, hipertensão estágio 2 e maior risco de DCVA no modelo totalmente ajustado. O resultado das análises de subgrupos indicou que a relação entre hipertensão estágio 1/2 e DCV/DCVA alta foi robusta em diferentes idades e sexos, e participantes sem uso de medicamentos anti-hipertensivos. Conclusão A classificação da PA de acordo com as diretrizes de PA da ACC/AHA de 2017 pode ser aplicada à população chinesa. (DCV sanguíneos (PA CardiologyAmerican Cardiology ACCAHA ACC AHA (ACC/AHA 201 DCVdoença (DCVA meiaidade meia idade 6644 6 644 6.64 Study incluídas grupos normal elevada antihipertensivos. antihipertensivos anti hipertensivos. hipertensivos anti-hipertensivos P005 P 0 05 P<0,0 significativo covariáveis 12 1/ separadamente Simultaneamente ajustado DCVDCVA sexos chinesa 20 664 64 6.6 P00 P<0, 66 6. P0 P<0 P<

Abstract Background Cardiovascular disease (CVD) is a series of diseases affecting the heart or blood vessels. Objectives To assess the relationship between blood pressure (BP) levels defined by the 2017 American College of Cardiology/American Heart Association (ACC/AHA) guideline and CVD/atherosclerotic cardiovascular disease (ASCVD) risk for middle-aged and elderly people in China. Methods A total of 6,644 middle-aged and elderly people from the China Health and Retirement Longitudinal Study (CHARLS) were finally included. According to the 2017 ACC/AHA guideline, all subjects were divided into four groups: normal BP, elevated BP, stage 1 hypertension, and stage 2 hypertension. The outcome of this study was considered as the risk of CVD and ASCVD. Univariate and multivariate COX regression models were adopted to examine the relationship of the 2017 ACC/AHA BP classification with the risk of CVD. Univariate and multivariate logistic regression models were used to investigate the association between BP levels and ASCVD risk. Subgroup analyses based on age, gender, and use of antihypertensive drugs were performed. P<0.05 was accepted as statistically significant. Results After adjusting all covariates, compared to middle-aged and elderly patients with normal BP, we found that patients with stage 1/2 hypertension were associated with a higher risk of CVD, separately. Simultaneously, we also observed a positive association between individuals with elevated BP, stage 1 hypertension, stage 2 hypertension, and higher ASCVD risk in the fully adjusted model. The result of subgroup analyses implied that the relationship between stage 1/2 hypertension and CVD/ high ASCVD was robust in different ages and genders, and participants without using antihypertensive drugs. Conclusion BP classification under the 2017 ACC/AHA BP guidelines may apply to the Chinese population. (CVD vessels (BP 201 CardiologyAmerican Cardiology ACCAHA ACC AHA (ACC/AHA CVDatherosclerotic atherosclerotic (ASCVD middleaged middle aged 6644 6 644 6,64 CHARLS (CHARLS included groups age gender performed P005 P 0 05 P<0.0 significant covariates 12 1/ separately Simultaneously model genders population 20 664 64 6,6 P00 P<0. 66 6, P0 P<0 P<

A rapid, simple and reliable method was devised for separation and determination of six metal cations, based on the capillary zone electrophoresis. The results showed that the complete separation of K+,Cu2+, Zn2+, Mn2+, Pb2+and Cd2+canbe achieved within 5 min. Anew electrolyte system containing 15 mmol-L"¹ imidazole as a background absorbance reference and 8 mmol-L"¹ malonic acid, 2 mmol-L-1 18-crown-6 ether as the complexing agents, 10%methanol as anorganic modifier, by using acetic acid to adjust the pH=4.40 was developed. The applied voltage was 20 kV at 25 °C. Under the optimum conditions, 6 ions were separated and determined with the correlation coefficient of 0.9984-0.9993. The detection limits (S/N=3) from 0.05 (K+)to 0.75 (Zn^mg-L¹. The repeatability of migration times was less than 0.60% and of peak area ranged from 3.4 to 5.6% (n=6). The results were compared with AAS for analyzing the real samples of waste-water and snow water