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  • Title: Intravenous Thrombolysis for Acute Ischemic Stroke in Patients with Thrombocytopenia.
    Author: Mowla A, Kamal H, Lail NS, Vaughn C, Shirani P, Mehla S, Rajabzadeh-Oghaz H, Deline C, Ching M, Crumlish A, Sawyer RN.
    Journal: J Stroke Cerebrovasc Dis; 2017 Jul; 26(7):1414-1418. PubMed ID: 28438515.
    Abstract:
    OBJECTIVE: To determine the safety of intravenous (IV) recombinant tissue plasminogen activator (rtPA) in patients with acute ischemic stroke (AIS) who had a platelet count <100,000 /mm3. METHODS: We reviewed the charts of all patients who received IV rtPA for AIS during a 9.6-year period at our stroke center. Those with platelets <100,000/mm3 were identified. Head computed tomography scans performed in 24-36 hours postthrombolysis were reviewed to evaluate the rate of symptomatic intracranial hemorrhage (sICH). RESULTS: A total of 835 patients received IV rtPA for AIS during this period. A total of 5 patients were identified to have a platelet count <100,000/mm3. One of them (20%) developed sICH post-IV tPA administration .The mean platelet count of those 5 patients was 63,000 ± 19,000/mm3. To the best of our knowledge, only 21 thrombocytopenic patients have been reported to receive IV rtPA for AIS in the medical literature. Combining our 5 cases with 21 patients previously reported, we have 26 AIS patients who had a platelet count <100,000/mm3 and received IV rtPA, with 2 of them developing sICH (7.7 %). Comparing the rate of sICH among this group with the patients with normal platelet count in our cohort, there was no statistically significant difference (7.7% versus 6.04%, P value = .73). CONCLUSION: IV rtPA for AIS might be safe in patients with platelet count <100,000/mm3 and it is reasonable not to delay IV rtPA administration while waiting for the platelet count result, unless there is strong suspicion for abnormal platelet count.
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