This is an multicenter, randomized, controlled, parallel group study. ST-Segment Elevation Myocardial Infarction (STEMI) patients with high thrombus burden(HTB) will be allocated to one of the following: intrathrombus thrombolysis or manual aspiration thrombectomy during primary percutaneous coronary intervention(PPCI).
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Eligibility Criteria
Inclusion Criteria:
1. Patients presenting with:
* Symptoms of myocardial ischemia lasting for ≥ 30 minutes AND
* Definite ECG changes indicating STEMI: ST elevation of greater than 0.1 mV in two contiguous limb leads or 0.2 mV in two contiguous precordial leads
2. Referred for PPCI
3. Withi…
Inclusion Criteria:
1. Patients presenting with:
* Symptoms of myocardial ischemia lasting for ≥ 30 minutes AND
* Definite ECG changes indicating STEMI: ST elevation of greater than 0.1 mV in two contiguous limb leads or 0.2 mV in two contiguous precordial leads
2. Referred for PPCI
3. Within 12 hours of symptom onset, or 12-24 hours but still suffered from persistent symptom, hemodynamic instability or fatal arrhythmia
4. High thrombus burden:
* TIMI thrombus grade 3 or 4 after emergency coronary angiography
* Or TIMI thrombus grade ≥3 after guidewire crossing or 1.5mm-diameter predilating the culprit lesion if emergency coronary angiography shows TIMI thrombus grade 5
5. Informed consent
Exclusion Criteria:
1. Rescue PCI after systemic thrombolysis
2. Previous CABG history
3. Life expectancy\<1 year
4. Active bleeding in past 6 months, hemorrhagic disorders and prone to bleeding
5. Serious hepatic or kidney dysfunction
6. Pregnancy and lactation
7. Uncontrolled hypertension (\>180/100mmHg)
8. Previous hemorrhagic stroke or ischemic stroke in past 3 months
9. Cardiogenic shock or cardio-pulmonary resuscitation
10. Informed consent cannot be obtained or follow-up cannot be completed
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