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Neurology India, Vol. 58, No. 3, May-June, 2010, pp. 504-505 Correspondence Intra-arterial thrombolysis in acute ischemic stroke S Aaron Department of Neurological Sciences, Neurology Unit, Christian Medical College & Hospital, Vellore, Tamil Nadu, India Date of Acceptance: 17-Jun-2010 Code Number: ni10136 PMID: 20644301 Sir, I read with interest the article "Intraarterial thrombolysis in acute ischemic stroke: A single center experience." [1] I have a few concerns: In this retrospective study, all the patients with acute ischemic stroke (< 6 h) fulfilling the inclusion and exclusion criteria were subjected to 4-vessel diagnostic cerebral angiography to establish the large vessel occlusion. Why was a noninvasive test, such as computed tomography, angiogram, or magnetic resonance angiogram not considered to look for large vessel occlusions? Also the authors have not mentioned how many patients with acute ischemic stroke were screened with angiogram while thrombolysing the 17 patients. The authors for the last 5 years have been using tPA tissue plasminogen activator instead of urokinase for intraarterial thrombolysis (IAT). They have quoted a study [2] supporting recombinant tissue plasminogen activator (rtPA) use over urokinase; however, in this article no statistically significant differences were proved between the 2 types of fibrinolytic agents. Urokinase may be a better option in subsets of patients with embolic strokes where, heparin therapy can be initiated earlier than in those who had rtPA to prevent recurrence. Other studies have shown the time of onset of symptom to recanalization to be the most important factor in determining the outcome after IAT. [3],[4] In this study, the authors should have mentioned the time from onset of the stroke till IA infusion was initiated and its influence on the outcome. References
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