Is carotid sonography a useful tool for predicting functional capabilities in ischemic stroke patients following carotid artery stenting?

Chih Ming Lin, Jian Chi Su, Yu Jun Chang, Chi Kuang Liu, Henry Horng Shing Lu*, Yuh Jyh Jong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Carotid stenosis is a major cause of stroke and timely intervention with stenting manipulation can significantly reduce the risk of secondary stroke. The impact of stenting procedures on patient functional capabilities has not yet been explored. The primary aim of this study was to examine associations between periprocedural carotid sonography parameters and post-treatment functional capabilities in stroke patients. Sixty-seven patients who received carotid stenting at 1 angiography laboratory were included. Prestenting and poststenting carotid duplex data were recorded and resistance index (RI) differences at various carotid system locations were compared. The modified Rankin Scale (mRS) was used to assess functional capability. All of the studied parameters were analyzed by SPSS (version 16.0, SPSS Inc, Chicago, IL). Following stenting, mRS scores improved (n=44) or remained stationary (n=23). Net contralateral internal carotid artery (ICA) RI for patients with improved mRS was lower compared to that for patients with stationary mRS (median=0.040 vs 0.11; P=0.003). The contralateral common carotid artery RI before and after stenting differed significantly (P<0.050) in both. The ipsilateral ICA RI differed (P<0.050) only in patients with improved mRS. The difference in mean transit time, Barthel index, net ipsilateral ICA RI, net contralateral external carotid artery RI, postipsilateral common carotid artery RI, and postipsilateral ICA RI differed significantly between different baseline stroke severity groups (P<0.050). Carotid artery stenting improved physical function in a proportion of ischemic stroke patients with carotid stenosis. Carotid ultrasound is a useful assessment tool to predict likely functional outcomes following carotid artery stenting.

Original languageEnglish
Article numbere6363
JournalMedicine (United States)
Volume96
Issue number12
DOIs
StatePublished - 1 Jan 2017

Keywords

  • Carotid artery stenting
  • Carotid stenosis
  • Ischemic stroke
  • Modified Rankin Scale
  • Resistance index

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