Cited 0 times in

Clarifying Differences Among Thrombolysis in Cerebral Infarction Scale Variants: Is the Artery Half Open or Half Closed?

Authors
 Sang Hyun Suh ; Harry J. Cloft ; David F. Kallmes ; David S. Liebeskind ; Alejandro A. Rabinstein ; Jennifer E. Fugate 
Citation
 Stroke, Vol.44(4) : 1166~1168, 2013 
Journal Title
 Stroke 
ISSN
 0039-2499 
Issue Date
2013
Abstract
BACKGROUND AND PURPOSE: Although thrombolysis in cerebral infarction (TICI) 2b/3 has been regarded as a successful angiographic outcome, the definition or subclassification of TICI 2 has differed between the original (o-TICI) and modified TICI (m-TICI). We sought to compare interobserver variability for both scores and analyze the subgroups of the TICI 2. METHODS: Five readers interpreted angiographies independently using a 6-point scale as follows: grade 0, no antegrade flow; grade 1, flow past the initial occlusion without tissue reperfusion; grade 2, partial reperfusion in <50% of the affected territory; grade 3, partial reperfusion in 50% to 66%; grade 4, partial reperfusion in ≥ 67%; grade 5, complete perfusion. Readings using this scale were then converted into o-TICI and m-TICI score. Statistical analysis was performed according to TICI 2 subgroups. RESULTS: Interobserver agreement was good for the o-TICI and m-TICI scores (intraclass correlation coefficient, 0.73 and 0.67, respectively). Our grade 3 (partial perfusion with 50% to 66%) occupied 19% of total readings, which would have been classified as grade 2a in o-TICI, but as 2b in m-TICI. The m-TICI was more likely to predict good clinical outcome than o-TICI (odds ratio, 2.01 versus 1.63, in reads with TICI 2b/3 versus 0/2a). CONCLUSIONS: Both TICI scales showed good agreement among readers. However, the variability in partial perfusion thresholds leads to different grading in ≈ 20% of cases and may result in significantly different rates of accurate outcome prediction.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/86869
DOI
10.1161/STROKEAHA.111.000399
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Radiology
Yonsei Authors
사서에게 알리기
  feedback
Files in This Item:
T201301562.pdfDownload
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse