Does Tenecteplase Before Mechanical Thrombectomy Result in a Faster Revascularization as Compared to Alteplase? Observations From a Comprehensive Stroke Care Center in Southern India

Abstract

Background The Indian data concerning the endovascular mechanical thrombectomy (MT) in acute ischemic strokes (AIS) with large vessel occlusion (LVO) is still scarce and evolving. Tenecteplase (TNK) has been recently approved for intravenous stroke thrombolysis prior to the MT. Methods This study is a single-center retrospective study. We performed data analysis of the AIS patients who consecutively presented during the study period with LVO and underwent thrombectomy. Procedural success was defined by the post-thrombectomy angiographic picture of grades 2b and 3 on modified Thrombolysis in Cerebral Infarction (mTICI) scale. Primary efficacy outcome was defined as an improvement of ≥4 points in National Institute of Health Stroke Scale (NIHSS) score at 24 h. Secondary efficacy outcome was based on modified Rankin Scale (mRS) score at 90 days. We also performed a comparative analysis of TNK and alteplase subgroups. Results Successful recanalization (mTICI 2b/3) was achieved in 65 (86.67%) patients. There was a significant mean difference between the NIHSS scores on admission and at 24 h (P < .001). Likewise, mRS score at 3 months also showed a significant mean difference as compared to baseline (P < .001). A faster recanalization was observed in those who were thrombolyzed with TNK, needed fewer number of passes, and if the procedure was performed under conscious sedation. Conclusion This study further strengthens the Indian data on efficacy and safety of MT in LVO ischemic strokes. Besides, whether the observation of TNK resulting in a faster revascularization is due to some factors unaccounted in our study, or an actual effect on thrombus due to a high fibrin specificity, needs to be tested further in larger randomized studies with matched sample sizes.