Endovascular treatment strategies for acute ischemic stroke

Department of Neurological Surgery, Columbia University Medical Center, New York, NY 10032, USA.
International Journal of Stroke (Impact Factor: 3.83). 12/2011; 6(6):511-22. DOI: 10.1111/j.1747-4949.2011.00670.x
Source: PubMed


The limitations of intravenous thrombolysis therapy have paved the way for the development of novel endovascular technologies for use in the setting of acute stroke. These technologies range from direct intraarterial thrombolysis to various thrombus disruption or retrieval devices to angioplasty and stenting. The tools in the armamentarium of the neuroendovascular interventionalist enable fast, effective revascularization to be offered to a wider population of patients that may otherwise have few therapeutic options available to them. In this paper, we review the current state-of-the-art in neuroendovascular intervention for acute ischemic stroke. Particular emphasis is placed on delineating the indications and outcomes for use of these various technologies.

2 Reads
  • Source
    • "Apart from the s-TPI, these predictive instruments, however, have been developed and validated in patients treated with intravenous recombinant tissue plasminogen activator (IV rtPA) according to restrictive criteria. In daily practice, patients are being treated according to local institutional guidelines, which may involve off-license use of IV rtPA and intra-arterial thrombolytic therapy [16] [17]. "
    [Show abstract] [Hide abstract]
    ABSTRACT: Objective: We evaluated the reliability of eight clinical prediction models for symptomatic intracerebral hemorrhage (sICH) and long-term functional outcome in stroke patients treated with thrombolytics according to clinical practice. Methods: In a cohort of 169 patients, 60 patients (35.5%) received IV rtPA according to the European license criteria. The remaining patients received off-label IV rtPA and/or were treated with intra-arterial thrombolysis. We used receiver operator characteristic curves to analyze the discriminative capacity of the MSS score, the HAT score, the SITS SICH score, the SEDAN score and the GRASPS score for sICH according to the NINDS and the ECASSII criteria. Similarly, the discriminative capacity of the s-TPI, the iScore and the DRAGON score were assessed for the modified Rankin Scale (mRS) score at 3 months poststroke. An area under the curve (c-statistic) >0.8 was considered to reflect good discriminative capacity. The reliability of the best performing prediction model was further examined with calibration curves. Separate analyses were performed for patients meeting the European license criteria for IV rtPA and patients outside these criteria. Results: For prediction of sICH c-statistics were 0.66-0.86 and the MMS yielded the best results. For functional outcome c-statistics ranged from 0.72 to 0.86 with s-TPI as best performer. The s-TPI had the lowest absolute error on the calibration curve for predicting excellent outcome (mRS 0-1) and catastrophic outcome (mRS 5-6). Conclusions: All eight clinical models for outcome prediction after thrombolysis for acute ischemic stroke showed fair predictive value in patients treated according daily practice. The s-TPI had the best discriminatory ability and was well calibrated in our study population.
    Clinical Neurology and Neurosurgery 08/2014; 125C:189-193. DOI:10.1016/j.clineuro.2014.08.011 · 1.13 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Objectives: To compare outcome of ischaemic stroke patients undergoing rescue endovascular procedure for proximal middle cerebral artery occlusion with matched patients without endovascular procedure after unsuccessful intravenous thrombolysis. Methods: Endovascularly treated patients with middle cerebral artery occlusion (n = 41) were matched by propensity score with similar patients treated by intravenous thrombolysis and having a considerable post-thrombolysis neurological deficit (n = 82). We compared their three-month outcome (modified Rankin Scale) and frequency of symptomatic intracerebral haemorrhage. For the endovascular group, we report onset-to-puncture time, onset-to-recanalization time, and recanalization rates. Results: In age, gender, time from onset, admission National Institutes of Health Stroke Scale, systolic and diastolic blood pressure, blood glucose, history of hypertension, diabetes mellitus, hyperlipidaemia, atrial fibrillation, and congestive heart failure, and in aetiology, the groups were similar. Endovascular group patients had a recanalization rate of 90%, and more often reached three-month modified Rankin Scale 0-2 (36.6% vs. 18.3%, P = 0.03). Mortality was equally common (19.5%) in both groups, and frequency of symptomatic intracerebral haemorrhage was 9.8% vs. 14.6% (P = 0.45). The endovascular group's median onset-to-puncture time was four-hours and six-minutes and onset-to-recanalization time was five-hours and 12 min. The latter time was more than one-hour longer in patients treated under general anaesthesia compared with patients treated under conscious sedation (median four-hours 50 min vs. five-hours 58 min; P < 0.01). Conclusions: Rescue endovascular approach increases likelihood of recanalization and may improve functional outcome in acute ischaemic stroke patients with proximal middle cerebral artery occlusion who did not respond to intravenous thrombolysis.
    International Journal of Stroke 09/2012; 10(2). DOI:10.1111/j.1747-4949.2012.00918.x · 3.83 Impact Factor

  • Clinical medicine (London, England) 10/2012; 12(5):407-9. DOI:10.7861/clinmedicine.12-5-407 · 1.49 Impact Factor
Show more