<qa>  What is acute thrombus diagnosed by coronary angiography?- Active ischemia acute thrombus diagnosed by coronary angiography, or dynamic ST segment changes demonstrated on ECG or another reversible cause of VT e.g. drug-induced arrhythmia, had recent acute coronary syndrome within 30 days, coronary revascularization 90 days bypass surgery, 30 days percutaneous coronary intervention, or have CCS functional class IV angina. Note that biomarker level elevation alone after ventricular arrhythmias does not denote acute coronary syndrome or active ischemia. 