Value of infarct location in the prediction of functional outcome in patients with an anterior large vessel occlusion: results from the HERMES study

M.L. Tolhuisen*, M. Ernst, A.M.M. Boers, S. Brown, L.F.M. Beenen, F. Guillemin, Y.B.W.E.M. Roos, J.L. Saver, R. van Oostenbrugge, A.M. Demchuck, W. van Zwam, T.G. Jovin, O.A. Berkhemer, K.W. Muir, S. Bracard, B.C.V. Campbell, A. Van der Lugt, P. White, M.D. Hill, D.W.J. DippelP.J. Mitchell, M. Goyal, M.W.A. Caan, H.A. Marquering, C.B.L.M. Majoie, HERMES Collaboration

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Web of Science)

Abstract

Purpose Follow-up infarct volume (FIV) is moderately associated with functional outcome. We hypothesized that accounting for infarct location would strengthen the association of FIV with functional outcome. Methods We included 252 patients from the HERMES collaboration with follow-up diffusion weighted imaging. Patients received endovascular treatment combined with best medical management (n = 52%) versus best medical management alone (n = 48%). FIV was quantified in low, moderate and high modified Rankin Scale (mRS)-relevant regions. We used binary logistic regression to study the relation between the total, high, moderate or low mRS-relevant FIVs and favorable outcome (mRS < 2) after 90 days. The strength of association was evaluated using the c-statistic. Results Small lesions only occupied high mRS-relevant brain regions. Lesions additionally occupied lower mRS-relevant brain regions if FIV expanded. Higher FIV was associated with a higher risk of unfavorable outcome, as were volumes of tissue with low, moderate and high mRS relevance. In multivariable modeling, only the volume of high mRS-relevant infarct was significantly associated with favorable outcome. The c-statistic was highest (0.76) for the models that included high mRS-relevant FIV or the combination of high, moderate and low mRS-relevant FIV but was not significantly different from the model that included only total FIV (0.75). Conclusion This study confirms the association of FIV and unfavorable functional outcome but showed no strengthened association if lesion location was taken into account.

Original languageEnglish
Pages (from-to)521-530
Number of pages10
JournalNeuroradiology
Volume64
Issue number3
Early online date3 Sep 2021
DOIs
Publication statusPublished - Mar 2022

Keywords

  • Acute ischemic stroke
  • Follow-up infarct location
  • Diffusion weighted imaging
  • Functional outcome
  • ACUTE ISCHEMIC-STROKE
  • ENDOVASCULAR THERAPY
  • THROMBECTOMY
  • LESION

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