Abstract
BackgroundAlthough observational studies have reported favorable clinical outcomes associated with intra-arterial thrombolysis as adjunct to mechanical thrombectomy, the cost and length of hospitalization associated with this intervention has not been studied. MethodsWe analyzed the nationally representative data of the United States data from Nationwide Inpatient Sample (NIS) to compare hospitalization cost and duration in addition to other outcomes in patients receiving (n = 1990) with those not receiving intra-arterial thrombolysis (n = 1990) in acute ischemic stroke patients undergoing mechanical thrombectomy using a case control design matched for age, gender, and presence of aphasia, hemiplegia, neglect, coma/stupor, hemianopsia and dysphagia. ResultsThere was no difference in the median hospitalization cost in patients treated with intra-arterial thrombolysis compared with those not treated with intra-arterial thrombolysis: $36,992 [28,361 to 54,336] versus $35,440 [24,383 to 50,438], (regression coefficient 2,485 [-1,947 to 6,917], p = 0.27). There was no difference in the median length of hospitalization in patients treated with intra-arterial thrombolysis compared with those not treated with intra-arterial thrombolysis: 6 days [3 to 10] versus 6 days [4 to 10], (regression coefficient -0.34 [-1.47 to 0.80], p = 0.56). There was no difference in odds of home-discharge (OR 1.02 95%CI 0.72-1.43, p = 0.93) or post-procedural intracranial hemorrhage (OR 1.16 95%CI 0.83-1.64, p = 0.39) between the two groups. ConclusionsWe did not observe an increase in the cost or length of hospitalization associated with the use of intra-arterial thrombolysis as adjunct to mechanical thrombectomy in acute ischemic stroke patients. If the ongoing randomized clinical trials demonstrate therapeutic efficacy in reducing death or disability, this intervention has a high likelihood of being beneficial overall.
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