The tendency of prevalence of hypertension in two countries in Gansu province from 1990 to 2012 / 中华预防医学杂志

<p><b>OBJECTIVE</b>To study the variation tendency of hypertension in two rural areas in Gansu, and provide epidemiological evidence to evaluate the hypertension of rural residents.</p><p><b>METHODS</b>Using equidistant random sampling method and cross-sectional sentinel monitoring, two remote natural villages, Yangzhuang and Xiangming, at Yellow river and Yangtze river valley were selected as hypertension monitoring site. From 1990 to 2012, clinical examination to the resident above 18 years old was carried out continuously for 23 years, 11 164 cases were included.</p><p><b>RESULTS</b>Hypertension prevalence of tested cases increased with years, Yangzhuang monitoring site increased from 6.9% (16/232) in 1990 to 36.7% (216/597) in 2012 with an increase of 29.8%, and Xiangming monitoring site increased from 3.4% (16/474) in 1995 to 20.6% (120/582) in 2011 with an increase of 17.2%. Total prevalence of Yangzhuang (24.1%, 1505/6240) was significantly higher than Xiangming (11.4%, 578/4924) (χ(2) = 277.9, P < 0.01). Total hypertension prevalence of 18 - 35 years old group was 9.9% (292/2944) in Yangzhuang and 4.2% (63/1495) in Xiangming, Yangzhuang was higher than Xiangming (χ(2) = 43.7, P < 0.01). Total hypertension prevalence of above 35 years old group was 36.8% (1213/3296) in Yangzhuang and 14.1% (515/3429) in Xiangming, Yangzhuang was higher than Xiangming (χ(2) = 417.7, P < 0.01). The growth rates of hypertension prevalence in 18 - 35 years old group of both areas (Yangzhuang: 823.5%, Xiangming: 614.3%) were higher than 35 years old group (Yangzhuang:310.5%, Xiangming: 368.0%), but the hypertension prevalence of above 35 years old group was higher than 18 - 35 years old group. Hypertension prevalence of male was 25.4% (761/2992) in Yangzhuang and 11.7% (238/2047) in Xiangming, Yangzhuang was higher than Xiangming (χ(2) = 145.8, P < 0.01), hypertension prevalence of female was 22.7% (738/3248) in Yangzhuang and 11.2% (340/2877)in Xiangming, Yangzhuang was higher than Xiangming (χ(2) = 125.1, P < 0.01). While the difference between male and female had no statistical significance in both areas.</p><p><b>CONCLUSION</b>Hypertension of the two monitoring points was in high epidemic trend, but with different epidemic trend. From different region and environment research to discuss the cause of hypertension can provide scientific evidence for prevention and control.</p>

Analysis of Keshan disease surveillance data in Pingliang city of Gansu province between 2007 and 2009 / 中国地方病学杂志

Objective To unveil the current situation and bends of Keshan disease in Pingliang city of Gansu province, to evaluate the outcome of related prevention and control measures, and to provide scientific basis for further prevention and treatment of the disease. Methods According to the "the central allowance local public health special funds endemic disease prevention programs grams mountain monitoring programme" and "the diagnostic criteria for Keshan disease" (GB 17021-1997), between 2007 and 2009, local residents from nine monitoring points in Pingliang city of Gansu province were clinically examined, and electrocardiography(ECG) tracings and Xray were taken of suspected cases. Corn, wheat samples and hair samples of children, adults and women were collected, and selenium content of these samples was determined by 2.3-2-amino-naphthalene fluorescence method. Results A total of 5846 residents were surveyed in 3 years, 247 cases of Keshan patients were detected, with a detection rate of 4.23%(247/5846), of which potential cases of Keshan disease 214, the detection rate was 3.66% (214/5846); chronic Keshan disease 33 cases, the detection rate was 0.56% (33/5846); no acute type and subacute Keshan disease detected. A total of 764 abnormal ECG cases were detected, and abnormal detection rate was 13.07%(764/5846). Two hundred and seven cases of suspected patients were examined by chest X-ray, 80 cardiac enlargement cases were detected, the detection rate was 38.6% (80/207). The 262 hair samples of children, adults and women were analyzed, hair selenium was (0.279 ± 0.098)mg/kg. Of the 9 corn and 31 wheat samples collected, corn selenium was (0.0079 ± 0.0029)mg/kg; wheat selenium was (0.0104 ± 0.0078)mg/kg. Conclusions Overall Keshan disease is in a stable and subsided trend in Pingliang city of Gansu province, but there are still a number of potential chronic types, sporadic new cases, suggesting that the disease monitoring, comprehensive prevention and treatment of the patients are the focus.