Yue-Hua Li1, Ming-Hua Li, Jun-Gong Zhao, Wu Wang. 1. Institute of Diagnostic and Interventional Radiology, The Sixth Affiliated People's Hospital, Shanghai Jiao Tong University. leeyuehuaxp@gmail.com
Abstract
PURPOSE: To evaluate the safety of thrombolysis with rt-PA in acute ischemic strokes during a 12-hour time window using an ultrafast MR protocol. METHODS: Forty-six patients who met the clinical criteria (acute ischemic stroke within 12 hours after symptom onset; National Institutes of Health stroke scale score (NIHSS) of 4 to 22 and no intracranial hemorrhage on CT) and MRI selection criteria (acute ischemic stroke except lacunar and large DWI lesion) were treated with intravenous rt-PA. MRI was performed before rt-PA, and at 24 hours, 7 days, and 14 days after stroke. Clinical status was assessed using the NIHSS and Modified Rankin scale (mRS). RESULTS: From 46 MRI-selected rt-PA patients, 43.5% (n= 20) were treated ≤3 hours (group A) and 56.5% (n= 26) after 3 to 12 hours (group B). No patients experienced symptomatic intracranial hemorrhage and the mortality rate was zero. No significant differences in age, gender, MRI lesion volumes, NIHSS score, and mRS were found between the 2 groups. Forty-five percent of the patients in group A and 46% in group B experienced a favorable outcome (P= .938). CONCLUSION: Our results demonstrated the safety of thrombolysis with rt-PA in selected stroke patients within a 12-hour time window using an ultrafast MR protocol.
PURPOSE: To evaluate the safety of thrombolysis with rt-PA in acute ischemic strokes during a 12-hour time window using an ultrafast MR protocol. METHODS: Forty-six patients who met the clinical criteria (acute ischemic stroke within 12 hours after symptom onset; National Institutes of Health stroke scale score (NIHSS) of 4 to 22 and no intracranial hemorrhage on CT) and MRI selection criteria (acute ischemic stroke except lacunar and large DWI lesion) were treated with intravenous rt-PA. MRI was performed before rt-PA, and at 24 hours, 7 days, and 14 days after stroke. Clinical status was assessed using the NIHSS and Modified Rankin scale (mRS). RESULTS: From 46 MRI-selected rt-PA patients, 43.5% (n= 20) were treated ≤3 hours (group A) and 56.5% (n= 26) after 3 to 12 hours (group B). No patients experienced symptomatic intracranial hemorrhage and the mortality rate was zero. No significant differences in age, gender, MRI lesion volumes, NIHSS score, and mRS were found between the 2 groups. Forty-five percent of the patients in group A and 46% in group B experienced a favorable outcome (P= .938). CONCLUSION: Our results demonstrated the safety of thrombolysis with rt-PA in selected strokepatients within a 12-hour time window using an ultrafast MR protocol.