TKA术后下肢动脉血栓诊治

2012-04-20 张辉摘编 医学论坛网

     左图:女,74岁。膝关节置换术后当日动脉造影提示急性腘动脉血栓形成   右图:球囊扩张支架植入术后京造影提示右下肢动脉通畅   首都医科大学宣武医院骨科沈惠良教授给我们分享了1例膝关节置换术(TKA)后下肢动脉血栓形成的患者的诊治经过。该病例报告发表在《中华骨科杂志》[2012,32(2):191].   患者,女,74岁,以右膝骨关节炎收入院。2年前行左膝关节置换术,术后并发下

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  左图:女,74岁。膝关节置换术后当日动脉造影提示急性腘动脉血栓形成

  右图:球囊扩张支架植入术后京造影提示右下肢动脉通畅

  首都医科大学宣武医院骨科沈惠良教授给我们分享了1例膝关节置换术(TKA)后下肢动脉血栓形成的患者的诊治经过。该病例报告发表在《中华骨科杂志》[2012,32(2):191].

  患者,女,74岁,以右膝骨关节炎收入院。2年前行左膝关节置换术,术后并发下肢深静脉血栓。

  体格检查:右膝关节屈曲挛缩 10°,负重位无明显内翻畸形,伸屈 10°-90°。足背动脉搏动可触及,胫后动脉较弱,HSS膝关节功能评分47分。患者于椎管内麻醉下行右侧全膝关节置换术。术中全程使用气囊止血带,压力为 260mmHg,时间为90min.术后半小时发现右下肢远端皮温低,足背、胫后动脉搏动均未触及。急行血管超声检查提示足背、胫后动脉未及血流,腘动脉远端可及血流杂音。急诊行右下肢血管造影术,见腘动脉急性血栓形成术。行腘动脉球囊扩张,支架植入术。术后下肢皮温恢复正常,足背动脉搏动可触及,胫后动脉搏动弱。术后12h开始低分子肝素皮下注射抗凝治疗,术后第3天开始口服华法林钠,与低分子肝素同时使用。定期监测凝血功能。根据国际标准化比值调整华法林钠剂量,使用华法林钠 3d后停用低分子肝素。术后第20天出院,出院前,加用氢氯吡格雷,75mg,每日1次,长期服用抗血小板治疗。

  术后膝关节屈曲挛缩畸形消失,手法功能训练,平卧位沙袋压迫伸直,主被动结合屈曲膝关节。膝关节可伸直至0°,为避免影响血管支架,膝关节主动屈曲控制在90°以内。术后2周膝关节伤口愈合,下地活动无明显疼痛,末梢血运及动脉搏动好,未出现明显的下肢缺血并发症。术后2个月随访,HSS膝关节功能评分为88分,右膝关节活动0°-95°,下肢动脉通畅。



    

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    2012-04-22 liuhuangbo
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