Relationships Among FVIII, t-PA/PAI-1, and MMP-9 Levels and Intracranial Hemorrhage Complications After Thrombolysis With Alteplase in Patients With Acute Ischemic Stroke: Protocol for a Multicenter Retrospective Study

Study Overview
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Brief Summary
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The primary aim of the study is to investigate the relationships among FVIII, t-PA/PAI-1, MMP-9 levels, and intracranial hemorrhage after thrombolysis with alteplase using a combined analysis.

Detailed Description
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Patients with acute ischemic stroke treated with alteplase within 4.5 hours after the onset of stroke symptoms will be recruited in this study. All participants will be divided into two groups according to whether intracranial hemorrhage occurred within 3 days after treatment with alteplase for analysis. Differences in FVIII, t-PA/PAI-1, and MMP-9 levels before and after thrombolytic therapy will be examined in both groups. This study will be conducted at Zhujiang Hospital of Southern Medical University, Nanfang Hospital of Southern Medical University, and the First Affiliated Hospital of Jinan University.

Official Title
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Relationships Among FVIII, t-PA/PAI-1, and MMP-9 Levels and Intracranial Hemorrhage Complications After Thrombolysis With Alteplase in Patients With Acute Ischemic Stroke: Protocol for a Multicenter Retrospective Study

Conditions
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Ischemic Stroke

Intervention / Treatment
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* Drug: Ateptidase


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Diagnosis of ischemic stroke and within the time window of thrombolysis (Onset of symptoms no more than 4.5 hours ) 18 y age 85 y• Symptoms of neurological deficits caused by cerebral infarction Informed consent form to confirm thrombolytic therapy have signed by patients or their family. Exclusion Criteria: A history of major head trauma or stroke in the past 3 months Suspicious subarachnoid hemorrhage Arterial puncture at noncompressible site in the last week History of intracranial hemorrhage Intracranial neoplasm, arteriovenous malformation, or aneurysm Recent intracranial or intraspinal surgery Elevated blood pressure (systolic >185 mm Hg or diastolic >110 mm Hg) Active internal bleeding or Acute bleeding diathesis Platelet count <100×109·L-1 Heparin received within 48 h resulting in aPTT above the upper limit of normal Current use of anticoagulant with INR >1.7 or PT >15 s Current use of thrombin inhibitors or factor Xa inhibitors Abnormal laboratory tests (eg, aPTT, INR, platelet count, ECT, TT, or appropriate factor Xa activity assays) Blood glucose concentration > 2.7 mmol/L CT demonstrates multilobar infarction (hypodensity >1/3 cerebral hemisphere) Mild cerebral infarction or rapid improvement of symptoms of cerebral infarction Symptoms of neurological impairment after seizures Major surgery or severe trauma in the past 2 weeks Gastrointestinal or urinary bleeding in the past 3 weeks History of myocardial infarction in the past 3 months Combine diseases that may affect outcomes,such as Anemia, hemophilia History of autoimmune disease or organ transplantation Pregnancy or breastfeeding women

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 85 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| experimental group<br>The patients who were treated with Ateptidase had intracranial haemorrhage adverse reactions | Drug: Ateptidase<br>* Treatment of ischemic stroke with Ateptidase<br>|
| control group<br>The patients who were treated with Ateptidase did not have intracranial haemorrhage adverse reactions. | Drug: Ateptidase<br>* Treatment of ischemic stroke with Ateptidase<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Intracranial hemorrhage | The occurrence of intracranial haemorrhage adverse reactions in ischemic stroke patients receiving thrombolytic therapy by alteplase | 3 days | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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t-PA/PAI-1, MMP-9, FVIII, Alteplase, intracranial haemorrhage, Ischemic stroke