J Infection:关节置换术中阳性培养物对于疾病预后的影响

2021-10-07 MedSci原创 MedSci原创

由于非感染性原因(即假体松动)导致的关节成形术需要进行翻修在假体关节的治疗中非常常见。

      由于非感染性原因(即假体松动)导致的关节成形术需要进行翻修在假体关节的治疗中非常常见。在这种情况下,尽管没有临床上的假体关节感染 (PJI) 并且在翻修过程中没有观察到的感染迹象,但一些术中培养有时会产生具有临床意义的微生物。这种类型的 PJI 称为术中培养阳性(PIOC),虽然意外的 PIOC 情况被认为具有良好的预后,长期治愈率≥85%,但它仍然可以引起严重的感染症状。在此,本项研究评估了PIOC-PJI 患者队列中失败的风险因素。

 

      研究人员在2007-2017 年期间进行了一项回顾性、观察性、多中心研究。纳入了诊断 有PIOC-PJI 的仅包括完整或部分假体翻修的一期手术患者。治疗失败定义为由同一微生物引起的疾病复发。

 

       本项研究共包括 203 例接受手术的患者。凝固酶阴性葡萄球菌( n= 125, 62%) 是主要病因,但一些发作是由剧毒细菌引起的 ( n= 51, 25%)。分别在 93 (46%) 和 110 (54%) 例中进行了假体完全翻修和部分翻修。随访中位时间为 3.4 年,失败发生在 17 次发作中(8.4%,95%CI 5.3-13.1)。部分翻修是手术失败的独立预测因子(HR 3.63;95%CI 1.03–12.8),革兰氏阴性杆菌(GNB)感染(HR 2.68;95%CI 0.91–7.89)和慢性肾功能损害(HR 2.40;95%CI 0.90–6.44)也是手术失败的危险因素。用生物膜活性抗生素(利福平/氟喹诺酮类)治疗对葡萄球菌和 GNB 引起的感染效果比较理想。

 

       本项研究证实PIOC-PJI 患者的总体预后良好,但在部分翻修和由 GNB 引起的感染的情况下需要密切随访。

 

 

原始出处:

MikelMancheño-Losa. et al. Prognosis of unexpected positive intraoperative cultures in arthroplasty revision: A large multicenter cohort. Journal of Infection.2021.

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    2022-03-11 yxch48
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