Histopathological assessment of fatal ipsilateral intraparenchymal hemorrhages after the treatment of supraclinoid aneurysms with the Pipeline Embolization Device

Yin C. Hu, Vivek R. Deshmukh, Felipe C. Albuquerque, David Fiorella, Randal R. Nixon, Donald V. Heck, Stanley L. Barnwell, Cameron G. McDougall

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74 Scopus citations

Abstract

Object. Delayed ipsilateral intraparenchymal hemorrhage has been observed following aneurysm treatment with the Pipeline Embolization Device (PED). The relationship of this phenomenon to the device and/or procedure remains unclear. The authors present the results of histopathological analyses of the brain sections from 3 patients in whom fatal ipsilateral intracerebral hemorrhages developed several days after uneventful PED treatment of supraclinoid aneurysms. Methods. Microscopic analyses revealed foreign material occluding small vessels within the hemorrhagic area in all patients. Further analyses of the embolic materials using Fourier transform infrared (FTIR) spectroscopy was conducted on specimens from 2 of the 3 patients. Although microscopically identical, the quantity of material recovered from the third patient was insufficient for FTIR spectroscopy. Results. FTIR spectroscopy showed that the foreign material was polyvinylpyrrolidone (PVP), a substance that is commonly used in the coatings of interventional devices. Conclusions. These findings are suggestive of a potential association between intraprocedural foreign body emboli and post-PED treatment-delayed ipsilateral intraparenchymal hemorrhage.

Original languageEnglish (US)
Pages (from-to)365-374
Number of pages10
JournalJournal of neurosurgery
Volume120
Issue number2
DOIs
StatePublished - Feb 1 2014

Keywords

  • Aneurysm
  • Hemorrhage
  • Pipeline embolization device
  • Vascular disorders

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology

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    Hu, Y. C., Deshmukh, V. R., Albuquerque, F. C., Fiorella, D., Nixon, R. R., Heck, D. V., Barnwell, S. L., & McDougall, C. G. (2014). Histopathological assessment of fatal ipsilateral intraparenchymal hemorrhages after the treatment of supraclinoid aneurysms with the Pipeline Embolization Device. Journal of neurosurgery, 120(2), 365-374. https://doi.org/10.3171/2013.11.JNS131599