目的:探究Meek植皮术联合碳纤维敷料修复大面积烧伤创面的效果。方法:将2018年1月-2020年1月笔者医院就诊的109例大面积烧伤患者随机分为观察组55例和对照组54例,对照组实施小邮票皮片移植术、碳纤维敷料联合修复方案,观察组实施Meek植...目的:探究Meek植皮术联合碳纤维敷料修复大面积烧伤创面的效果。方法:将2018年1月-2020年1月笔者医院就诊的109例大面积烧伤患者随机分为观察组55例和对照组54例,对照组实施小邮票皮片移植术、碳纤维敷料联合修复方案,观察组实施Meek植皮技术、碳纤维敷料联合修复方案。比较两组手术相关指标(手术时间、皮片融合时间、创面愈合时间及住院时间)、植皮情况(供皮面积、植皮面积率及术后2周皮片成活率),比较术前及术后12个月两组生活质量[简明烧伤健康量表(Burn-specific health scale-abbreviated,BSHS-A)评分]、术后12个月瘢痕状况[温哥华瘢痕量表(Vancouver scar scale,VSS)评分],比较两组治疗12个月内并发症发生情况。结果:观察组手术时间、皮片融合时间、创面愈合时间、住院时间均显著短于对照组,差异有统计学意义(P<0.05)。观察组供皮面积、植皮面积率显著低于对照组,差异有统计学意义(P<0.05);观察组术后2周皮片成活率显著高于对照组,差异有统计学意义(P<0.05)。术后12个月,两组BSHS-A评分均较治疗前显著升高,且观察组明显高于同一时间对照组,差异有统计学意义(P<0.05)。术后12个月观察组VSS评分低于对照组,差异有统计学意义(P<0.05)。术后12个月,观察组并发症总发生率显著低于对照组,差异有统计学意义(P<0.05)。结论:Meek植皮术联合碳纤维敷料可对大面积烧伤患者创面产生良好修复效果,有效缩短手术时间及患者恢复时间,改善植皮情况并提高术后成活率,同时相关并发症发生较少,具有较高临床应用价值。展开更多
An experimental study was conducted to investigate the feasibility of a proposed rapid repair technique for severely earthquake-damaged bridge piers with flexural-shear failure mode. Six circular pier specimens were f...An experimental study was conducted to investigate the feasibility of a proposed rapid repair technique for severely earthquake-damaged bridge piers with flexural-shear failure mode. Six circular pier specimens were first tested to severe damage in flexural-shear mode and repaired using early-strength concrete with high-fluidity and carbon fiber reinforced polymers （CFRP）. After about four days, the repaired specimens were tested to failure again. The seismic behavior of the repaired specimens was evaluated and compared to the original specimens. Test results indicate that the proposed repair technique is highly effective. Both shear strength and lateral displacement of the repaired piers increased when compared to the original specimens, and the failure mechanism of the piers shifted from flexural-shear failure to ductile flexural failure. Finally, a simple design model based on the Seible formulation for post-earthquake repair design was compared to the experimental results. It is concluded that the design equation for bridge pier strengthening before an earthquake could be applicable to seismic repairs after an earthquake if the shear strength contribution of the spiral bars in the repaired piers is disregarded and 1.5 times more FRP sheets is provided.展开更多
文摘目的:探究Meek植皮术联合碳纤维敷料修复大面积烧伤创面的效果。方法:将2018年1月-2020年1月笔者医院就诊的109例大面积烧伤患者随机分为观察组55例和对照组54例,对照组实施小邮票皮片移植术、碳纤维敷料联合修复方案,观察组实施Meek植皮技术、碳纤维敷料联合修复方案。比较两组手术相关指标(手术时间、皮片融合时间、创面愈合时间及住院时间)、植皮情况(供皮面积、植皮面积率及术后2周皮片成活率),比较术前及术后12个月两组生活质量[简明烧伤健康量表(Burn-specific health scale-abbreviated,BSHS-A)评分]、术后12个月瘢痕状况[温哥华瘢痕量表(Vancouver scar scale,VSS)评分],比较两组治疗12个月内并发症发生情况。结果:观察组手术时间、皮片融合时间、创面愈合时间、住院时间均显著短于对照组,差异有统计学意义(P<0.05)。观察组供皮面积、植皮面积率显著低于对照组,差异有统计学意义(P<0.05);观察组术后2周皮片成活率显著高于对照组,差异有统计学意义(P<0.05)。术后12个月,两组BSHS-A评分均较治疗前显著升高,且观察组明显高于同一时间对照组,差异有统计学意义(P<0.05)。术后12个月观察组VSS评分低于对照组,差异有统计学意义(P<0.05)。术后12个月,观察组并发症总发生率显著低于对照组,差异有统计学意义(P<0.05)。结论:Meek植皮术联合碳纤维敷料可对大面积烧伤患者创面产生良好修复效果,有效缩短手术时间及患者恢复时间,改善植皮情况并提高术后成活率,同时相关并发症发生较少,具有较高临床应用价值。
基金National Natural Science Foundation of China Under Grant No.51008041 and 50978042the National Special Foundation of Earthquake Science of China Under Grant No.200808021the Fundamental Research Funds for the Central Universities Under Grant No.2011JC011
文摘An experimental study was conducted to investigate the feasibility of a proposed rapid repair technique for severely earthquake-damaged bridge piers with flexural-shear failure mode. Six circular pier specimens were first tested to severe damage in flexural-shear mode and repaired using early-strength concrete with high-fluidity and carbon fiber reinforced polymers （CFRP）. After about four days, the repaired specimens were tested to failure again. The seismic behavior of the repaired specimens was evaluated and compared to the original specimens. Test results indicate that the proposed repair technique is highly effective. Both shear strength and lateral displacement of the repaired piers increased when compared to the original specimens, and the failure mechanism of the piers shifted from flexural-shear failure to ductile flexural failure. Finally, a simple design model based on the Seible formulation for post-earthquake repair design was compared to the experimental results. It is concluded that the design equation for bridge pier strengthening before an earthquake could be applicable to seismic repairs after an earthquake if the shear strength contribution of the spiral bars in the repaired piers is disregarded and 1.5 times more FRP sheets is provided.
