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Katsanos, Aristeidis H.; Malhotra, Konark; Goyal, Nitin; Arthur, Adam; Schellinger, Peter D.; Köhrmann, Martin; Krogias, Christos; Turc, Guillaume; Magoufis, Georgios; Leys, Didier; Ahmed, Niaz; Khatri, Pooja; Goyal, Mayank; Alexandrov, Andrei V.; Tsivgoulis, Georgios
Annals of neurology, September 2019, Volume: 86, Issue: 3Journal Article
Objective The substantial clinical improvement in acute ischemic stroke (AIS) patients treated with mechanical thrombectomy (MT), combined with the poor response of proximal intracranial occlusions to intravenous thrombolysis (IVT), led to questions regarding the utility of bridging therapy (BT; IVT followed by MT) compared to direct mechanical thrombectomy (dMT) for AIS patients with large vessel occlusion (LVO). Methods We aimed to investigate the comparative safety and efficacy of BT and dMT in AIS patients. We included all observational studies and post hoc analyses from randomized controlled clinical trials that provided data on the outcomes of AIS patients with LVO stratified by IVT treatment status prior to MT. Results We identified 38 eligible observational studies (11,798 LVO patients, mean age = 68 years, 56% treated with BT). In unadjusted analyses, BT was associated with a higher likelihood of 3‐month functional independence (odds ratio OR = 1.52, 95% confidence interval CI = 1.32–1.76), 3‐month functional improvement (common OR cOR for 1‐point decrease in modified Rankin Scale score = 1.52, 95% CI = 1.18–1.97), early neurological improvement (OR = 1.21, 95% CI = 1.83–1.76), successful recanalization (OR = 1.22, 95% CI = 1.02–1.46), and successful recanalization with ≤2 device passes (OR = 2.28, 95% CI = 1.43–3.64) compared to dMT. BT was also related to a lower likelihood of 3‐month mortality (OR = 0.64, 95% CI = 0.57–0.73). In the adjusted analyses, BT was independently associated with a higher likelihood of 3‐month functional independence (adjusted OR = 1.55, 95% CI = 1.26–1.91) and lower odds of 3‐month mortality (adjusted OR = 0.80, 95% CI = 0.66–0.97) compared to dMT. The two groups did not differ in functional improvement (adjusted cOR = 1.24, 95% CI = 0.89–1.74) or symptomatic intracranial hemorrhage (adjusted OR = 0.87, 95% CI = 0.61–1.25). Interpretation BT appears to be associated with improved functional independence without evidence for safety concerns, compared to dMT, for AIS patients with LVO. ANN NEUROL 2019;86:395–406
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