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Objective To investigate the spatial distribution of Oncomelania hupensis snail habitats at the administrative village scale in schistosomiasis-endemic areas of Hubei Province, so as to provide scientific bases for precise control of O. hupensis snails in the province. Methods Data regarding snail distribution at the village level in Hubei Province in 2017 were collected to create a spatial analysis database of snail distribution in Hubei Province. The spatial aggregations of O. hupensis distribution were analyzed using Moran’s I index and Local Moran’s I index. In addition, the distances from schistosomiasis-endemic villages to the Yangtze River were captured using the software ArcGIS 13.0, and their correlations with area of snail habitats were examined with the Spearman correlation method. Results O. hupensis snails were mainly distributed in 5 450 endemic villages from 63 counties of 13 cities in Hubei Province in 2017. The global spatial autocorrelation analysis showed spatial aggregations in the areas of historically accumulated snail habitats, current areas of snail habitats, areas of snail habitats outside the embankment and snail habitats inside the embankment (all Z Scores > 0, all P values < 0.05), and no spatial aggregation was seen in the areas of snail habitats in hilly areas (Z Score > 0, P > 0.05). There were four types of spatial distribution of historically accumulated areas of snail habitats, areas of current snail habitats, areas of snail habitats outside the embankment and snail habitats inside the embankment, including the high-high type (H-H type), high-low type (H-L type), low-high type (L-H type) and random distribution type, and a high percentage of the H-H type was found. There were 340, 125 and 110 endemic villages with the H-H type of areas of historically accumulated snail habitats, current areas of snail habitats and areas of snail habitats outside the embankment, and these villages were mainly concentrated in Wuhan and Jingzhou cities, with almost consistent spatial aggregation locations. There were 319 endemic villages with the H-H type of distribution of snail habitats inside the embankment, which were mainly distributed in Jingzhou, Xiaogan and Huangshi cities. In addition, the areas of historically accumulated snail habitats, current areas of snail habitats and areas of snail habitats outside the embankment negatively correlated with the distance from the endemic villages to the Yangtze River (r = −0.094, P < 0.01; r = −0.225, P < 0.01; r = −0.177, P < 0.01). Conclusion The clustering areas of snail habitats along the Yangtze River Basin, notably the villages near the Yangtze River are key regions for snail monitoring and control in Hubei Province.
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AIM:To evaluate the visual outcome of Oculentis Mplus intraocular lens(IOL).METHODS:Totally 20 eyes in 20 patients received phacoemulsification and Oculentis Mplus intraocular lens implantation were as test group,and 20 eyes (Aspira-aA IOL) were as control group.The following postoperative examinations were performed after operation for 3mo:uncorrected visual acuity of distance and near,refractive results,UBM examination,the rate of wearing spectacles and the complications.RESULTS:At 3mo after surgery,distance visual acuity of test group with Oculentis Mplus IOL were 0.10± 0.03,the difference with control group was not significant (t=1.74,P＞0.05).Eyes in test group had an uncorrected near acuity 0.11 ±0.04,the difference with control group was significant(t=15.53,P＜0.05).The rate of wearing spectacles was 5％ in test group and 100％ in control group.The rate of uncomfortableness was 5％ in test group.CONCLUSION:The implantation of Oculentis Mplus IOL not only has a good distance uncorrected visual acuity,but also with better near visual acuity.The surgery is safe,reliable and no special complication induced.
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Objective To evaluate the feasibility and safety of cap-assisted endoscopic nylon loop ligation (C-ENLL) as a new and simple method on gastric fundus submucosal tumors. Methods 74 cases with small gastric fundus submucosal tumors ≤2.00 cm in diameter were reviewed between January 2015 and June 2016. All cases were treated by C-ENLL. The clinical efficacy was analyzed. Results All the 74 patients underwent endoscopic ultrasonography before operation, 70 cases originated from the muscularis propria, 3 cases originated from the muscularis mucosae, 1 case originated from the submucosa. The average diameter of the lesions ranged 0.50 ～ 1.80 cm. C-ENLL achieved an en bloc resection rate of 100.0％, with a mean total procedure time of 26 min. Two patients developed delayed perforation, were treated with nylon rope and metal clip purse suture wound. All of whom were managed successfully. There was no delayed bleeding after operation. Pathological examination showed that 66.2％ (49/74) of the tumors were gastrointestinal stromal tumors. No tumor recurrence was observed during the follow-up. Conclusion The C-ENLL may be a feasible and safe method for the treatment of small gastric fundus submucosal tumors.