Polydioxanone(PDS),one of the bioabsorbable materials for coronary stent,is catching eyes of researchers recently. When designing the geometry of the PDS coronary stent,the length and the height of the crown are quite...Polydioxanone(PDS),one of the bioabsorbable materials for coronary stent,is catching eyes of researchers recently. When designing the geometry of the PDS coronary stent,the length and the height of the crown are quite important. However,rarely literatures have discussed the relationship between the two geometry parameters and the radial force of the bioabsorbable coronary stent. Therefore,a current effective tool of finite element method was applied in the evaluation of the relationship. By simulating 4 groups of models,it was obtained that the radial force of the coronary stent would not definitely increase with the rising value of Lcrownfrom 0. 8 mm to 2. 4mm. Meanwhile,Hcrownand radial force of the coronary stent had no linear relationship with each other.展开更多
目的分析逆行输尿管软镜手术(retrograde intrarenal stone surgery,RIRS)治疗输尿管上段结石或肾结石后出现残留结石患者放置输尿管排石支架辅助排石的效果。方法选取2020年12月—2021年12月连云港市东方医院接收的RIRS治疗输尿管上段...目的分析逆行输尿管软镜手术(retrograde intrarenal stone surgery,RIRS)治疗输尿管上段结石或肾结石后出现残留结石患者放置输尿管排石支架辅助排石的效果。方法选取2020年12月—2021年12月连云港市东方医院接收的RIRS治疗输尿管上段结石或肾结石后出现残留结石患者50例展开研究,按照电脑随机分配方式分组,参比组25例患者应用普通双J管辅助排石治疗,研究组25例患者应用输尿管排石支架留置辅助排石术治疗。分析两组患者治疗后的疼痛水平、结石排尽时间、止痛时间、住院时间、结石排出率、并发症发生率。结果研究组患者疼痛水平轻于参比组,差异有统计学意义(P<0.05);研究组患者结石排尽时间、止痛时间、住院时间均短于参比组,差异有统计学意义(P<0.05);研究组结石排出率为96.00%,高于参比组的68.00%,差异有统计学意义(χ^(2)=4.878,P<0.05);研究组并发症发生率为4.00%,低于参比组的32.00%,差异有统计学意义(χ^(2)=4.878,P<0.05)。结论在对RIRS治疗输尿管上段结石或肾结石后出现残留结石患者进行治疗时,应用输尿管排石支架留置辅助排石术治疗能够减轻患者疼痛水平,加快结石排出,缩短住院时间,减少并发症发生风险。展开更多
基金Key Project of Medicine,Shanghai Science and Technical Committee,China(No.10411953300)
文摘Polydioxanone(PDS),one of the bioabsorbable materials for coronary stent,is catching eyes of researchers recently. When designing the geometry of the PDS coronary stent,the length and the height of the crown are quite important. However,rarely literatures have discussed the relationship between the two geometry parameters and the radial force of the bioabsorbable coronary stent. Therefore,a current effective tool of finite element method was applied in the evaluation of the relationship. By simulating 4 groups of models,it was obtained that the radial force of the coronary stent would not definitely increase with the rising value of Lcrownfrom 0. 8 mm to 2. 4mm. Meanwhile,Hcrownand radial force of the coronary stent had no linear relationship with each other.
文摘目的分析逆行输尿管软镜手术(retrograde intrarenal stone surgery,RIRS)治疗输尿管上段结石或肾结石后出现残留结石患者放置输尿管排石支架辅助排石的效果。方法选取2020年12月—2021年12月连云港市东方医院接收的RIRS治疗输尿管上段结石或肾结石后出现残留结石患者50例展开研究,按照电脑随机分配方式分组,参比组25例患者应用普通双J管辅助排石治疗,研究组25例患者应用输尿管排石支架留置辅助排石术治疗。分析两组患者治疗后的疼痛水平、结石排尽时间、止痛时间、住院时间、结石排出率、并发症发生率。结果研究组患者疼痛水平轻于参比组,差异有统计学意义(P<0.05);研究组患者结石排尽时间、止痛时间、住院时间均短于参比组,差异有统计学意义(P<0.05);研究组结石排出率为96.00%,高于参比组的68.00%,差异有统计学意义(χ^(2)=4.878,P<0.05);研究组并发症发生率为4.00%,低于参比组的32.00%,差异有统计学意义(χ^(2)=4.878,P<0.05)。结论在对RIRS治疗输尿管上段结石或肾结石后出现残留结石患者进行治疗时,应用输尿管排石支架留置辅助排石术治疗能够减轻患者疼痛水平,加快结石排出,缩短住院时间,减少并发症发生风险。