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Postinterventional subarachnoid haemorrhage after endovascular stroke treatment with stent retrievers

  • Interventional Neuroradiology
  • Published:
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Abstract

Introduction

The purpose of this paper is to investigate the clinical significance of postinterventional subarachnoid hyperdensities (PSH) after endovascular mechanical thrombectomy in acute ischemic stroke.

Methods

We analysed clinical and radiological data of 113 consecutive patients who received postinterventional CT scans within 4.5 h after mechanical thrombectomy.

Results

PSH was present in 27 of 113 patients (24 %). Extravasation of contrast agent was observed during intervention in only 6 of 27 cases (22 %). There was consecutive haemorrhagic transformation in four patients with PSH (p = 0.209, Fisher’s exact test). Preinterventional predictors for the occurrence of PSH in our series were a long interval between clinical onset and recanalization (p = 0.028), a long procedure time (p = 0.010), and a high number of recanalization attempts (p = 0.001). PSH had no significant impact on clinical outcome (modified Rankin Scale) at discharge (p = 0.419) or at 3 months (p = 0.396). There were no significant correlations between PSH and thrombectomy devices (Solitaire: p = 0.433, Trevo Pro: p = 0.124).

Conclusion

PSH after endovascular mechanical thrombectomy in acute ischemic stroke are likely to occur in complicated cases in which more than one revascularisation attempt is performed. PSH per se do not appear to be associated with an impaired clinical outcome or an elevated risk for consecutive haemorrhage.

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Ethical standards and patient consent

We declare that this study has been approved by the Ethics Committee of the University Hospital of Aachen and has therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. Patient consent was waived due to the retrospective nature of this study.

Acknowledgments

The authors would like to thank Valérie Schöffers, Katharina Frohnhofen and Pola Heimann for their helpful contributions to this article.

Conflict of interest

We declare that we have no conflict of interest.

Author information

Authors and Affiliations

  1. Klinik für Diagnostische und Interventionelle Neuroradiologie, Uniklinik Aachen, Pauwelsstr. 30, 52074, Aachen, Germany

    Omid Nikoubashman, Rastislav Pjontek & Martin Wiesmann

  2. Institute for Neuroscience and Medicine 4, Forschungszentrum Jülich, Jülich, Germany

    Omid Nikoubashman

  3. Klinik für Neurologie, Uniklinik Aachen, Aachen, Germany

    Arno Reich & Michael Jungbluth

Authors
  1. Omid Nikoubashman
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  2. Arno Reich
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  3. Rastislav Pjontek
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  4. Michael Jungbluth
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  5. Martin Wiesmann
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Corresponding author

Correspondence to Martin Wiesmann.

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Nikoubashman, O., Reich, A., Pjontek, R. et al. Postinterventional subarachnoid haemorrhage after endovascular stroke treatment with stent retrievers. Neuroradiology 56, 1087–1096 (2014). https://doi.org/10.1007/s00234-014-1424-1

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  • DOI: https://doi.org/10.1007/s00234-014-1424-1

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