颌间牵引钉牵引治疗颌骨骨折疗效观察

目的:研究分析颌间牵引钉颌间牵引治疗颌骨骨折的疗效及对患者颌面功能恢复的影响。方法:选取2010年10月-2015年6月在笔者医院接受诊治的96例颌骨骨折患者为研究对象。根据随机数表法分为对照组和研究组,每组48例。对照组患者采用手法固定,研究组患者采用颌间牵引钉颌间牵引固定。观察并对比两组患者治疗前后颌面功能、并发症及疗效情况。结果:两组患者术后开口功能评分及咀嚼功能评分均低于治疗前,但研究组高于对照组,差异具有统计学意义(P<0.05);研究组患者并发症发生率4.2%低于对照组的25.0%,差异有统计学意义(P<0.05);研究组患者治疗总有效率97.9%,高于对照组的72.9%,差异有统计学意义(P<0.05)。结论:颌间牵引钉颌间牵引具有较强的稳定性、生物兼容性及安全性,可有效恢复患者颌面功能,降低并发症发生率,改善患者颌面部外观美,治疗效果佳,值得临床推广应用。

Estimation of Heavy Metal Levels in the Muscle, Gizzard, Liver and Kidney of Broiler, Layer and Local (Cockerel) Chickens Raised within Awka Metropolis and Its Environs, Anambra State, South Eastern Nigeria

65 chickens (layer, broiler and cockerel) from different farms within Awka metropolis and its environs were purchased, processed and analyzed for the levels of heavy metals (Pb, As, Cd, Ni, Cr, Hg, V and Cu) in the internal organs (muscle, gizzard, liver and kidney) of the chickens using flame atomic absorption spectrometer after nitric/perchloric acid digestion. The ranges of mean concentrations of the metals in the internal organs of the chickens in mg/g were Pb;(0.046 - 0.478) As;(0.053 - 0.318), Cd;(0.027 - 0.649), Cr;(0.045 - 0.234), Hg;(0.052 - 0.740), Ni;(0.038 - 0.534), V;(0.037 - 0.053), and Cu;(0.146 - 0.445). About 10% - 40% of Pb, Cd and Hg exceeded the permissible level of 0.5 ppm set for these metals in the liver and kidney of the chickens. Anova analysis revealed significance of the heavy metals in the internal organs of the chickens at p < 0.05.