Journal of Korean Neurosurgical Society

  • 제61권2호
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  • Pages.201-211
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  • 2018
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  • 2005-3711(pISSN)
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  • 1598-7876(eISSN)
대한신경외과학회 (The Korean Neurosurgical Society)
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Clopidogrel Response Variability in Unruptured Intracranial Aneurysm Patients Treated with Stent-Assisted Endovascular Coil Embolization : Is Follow-Up Clopidogrel Response Test Necessary?

  • Kim, Min Soo (Department of Neurosurgery, Ulsan University Hospital, University of Ulsan College of Medicine) ;
  • Park, Eun Suk (Department of Neurosurgery, Ulsan University Hospital, University of Ulsan College of Medicine) ;
  • Park, Jun Bum (Department of Neurosurgery, Ulsan University Hospital, University of Ulsan College of Medicine) ;
  • Lyo, In Uk (Department of Neurosurgery, Ulsan University Hospital, University of Ulsan College of Medicine) ;
  • Sim, Hong Bo (Department of Neurosurgery, Ulsan University Hospital, University of Ulsan College of Medicine) ;
  • Kwon, Soon Chan (Department of Neurosurgery, Ulsan University Hospital, University of Ulsan College of Medicine)
  • 투고 : 2017.03.31
  • 심사 : 2017.06.29
  • 발행 : 2018.03.01
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초록

Objective : The purpose of this study was to analyze the variability of clopidogrel responses according to duration of a clopidogrel drug regimen after stent-assisted coil embolization (SAC), and to determine the correlation between the variability of clopidogrel responses and thromboembolic or hemorrhagic complications. Methods : A total of 47 patients who underwent SAC procedures to treat unruptured intracranial aneurysms were enrolled in the study. Preoperatively, patients received more than seven days of aspirin (100 mg) and clopidogrel (75 mg), daily. P2Y12 reaction unit (PRU) was checked with the VerifyNow test one day before the procedure (pre-PRU) and one month after the procedure (post-PRU). PRU variability was calculated as the difference between the initial response and the follow-up response. Patients were sorted into two groups based on their response to treatment : responsive and hypo-responsive. Results : PRU variability was significantly greater in the hypo-responsive group when compared to the responsive group (p=0.019). Pre-PRU and serum platelets counts were significantly correlated with PRU variation (p=0.005 and p=0.004, respectively). Although thromboembolic complication had no significant correlated factors, hemorrhagic complication was correlated with pre-PRU (p=0.033). Conclusion : In conclusion, variability of clopidogrel responses during clopidogrel medication was correlated to serum platelet counts and the initial clopidogrel response. Thromboembolic and hemorrhagic complications did not show correlation with the variability of clopidogrel response, or the clopidogrel response after one month of medication; however, hemorrhagic complication was associated with initial clopidogrel response. Therefore, it is recommended to test patients for an initial clopidogrel response only, as further tests would be insignificant.

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참고문헌

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피인용 문헌

  1. Utility of platelet function testing in stent-assisted coiling of cerebral aneurysms vol.26, pp.3, 2018, https://doi.org/10.1177/1591019919894140
  2. The Efficacy of P2Y12 Reactive Unit to Predict the Periprocedural Thromboembolic and Hemorrhagic Complications According to Clopidogrel Responsiveness and Safety of Modification of Dual Antiplatelet T vol.63, pp.5, 2018, https://doi.org/10.3340/jkns.2019.0082
  3. Long-term complications after stent assist coiling dependent on clopidogrel response vol.21, pp.1, 2018, https://doi.org/10.1186/s12883-021-02270-0