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肿瘤患者PICC相关性血栓形成及其对置管静脉血流状态影响的临床研究

Clinical Study of Peripherally Inserted Central Catheter-Related Thrombosis and Its Influence on the Blood Flow Status of the Inserted Veins in Cancer Patients

    摘要
  • 摘要:
      目的  探讨肿瘤患者经外周静脉置入中心静脉导管（peripherally inserted central catheters, PICC）置管后2周内导管相关性血栓（PICC-related thrombosis, PICCRT）形成情况及其对置管静脉血流状态的动态影响，为实施血栓防控措施提供依据。
      方法  2019年5月–2020年7月，前瞻性纳入四川大学华西医院PICC置管的实体肿瘤患者，用彩色多普勒超声仪检测患者置管后2周内PICCRT形成情况，根据是否发生PICCRT以及有无血栓相关症状和体征，分为无血栓组、非症状性血栓组和症状性血栓组。比较每个时点PICCRT患者检出情况，及其置管前1天和置管后2周内置管静脉的血管直径和血流速度。
      结果  有173例患者完成试验，126例（72.8%）形成了PICCRT，且均发生在置管后1周内。其中非症状性血栓95例，症状性血栓31例。PICC置管前后，非症状性血栓组和症状性血栓组的血管直径均小于无血栓组，血流速度慢于无血栓组，且差异随着导管留置时间延长而持续增加，差异均有统计学意义。
      结论  PICC置管时选择血管直径大、血流速度快的静脉穿刺置管，可能有助于降低PICCRT；置管后1周是预防PICCRT的重点干预时间。

     

    Abstract:
      Objective  To investigate the clinical features of peripherally inserted central catheter (PICC)-related thrombosis (PICCRT) within 2 weeks after PICC placement in cancer patients and its dynamic influence on the blood flow status of veins inserted with catheter, and to provide support for implementing thrombosis prevention and control measures.
      Methods  Between May 2019 and July 2020, patients who had solid tumors and who had PICC were prospectively enrolled at West China Hospital, Sichuan University. Scheduled color Doppler imaging was performed to examine the status of PICCRT formation at 8 points of time, with the first one conducted one day before the insertion of PICC and the other 7 completed within 2 weeks after the insertion of PICC. Then, based on whether patients had PICCRT, the patients were divided into two groups, a non-PICCRT group and a PICCRT group. The PICCRT group was further divided into two subgroups, an asymptomatic PICCRT group and a symptomatic PICCRT group, according to whether the patients had thrombosis-related symptoms and signs. Comparisons were made to study the incidence of PICCRT and the vascular diameter and the blood flow velocity in the veins inserted with catheters at different points of time in the patients of different groups.
      Results  Among 173 cancer patients in the cohort, 126 (72.8%) developed PICCRT, all of which occurred within 1 week after PICC insertion. There were 95 cases of asymptomatic PICCRT and 31 cases of symptomatic PICCRT. Before and after PICC insertion, the vascular diameter of both the asymptomatic and symptomatic PICCRT groups was significantly smaller than that of the non-PICCRT group and the blood flow velocity was significantly slower than that of the non-PICCRT group, with the difference continuing to increase with the prolongation of catheter indwelling time.
      Conclusion  Inserting catheters in veins with bigger vascular diameter and faster blood flow velocity may help reduce the incidence of PICCRT. The first week post catheter insertion is the key intervention period for the prevention of PICCRT.

     

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