The role of thrombolytic therapy in a non-ST elevation acute coronary syndrome (ACS) is:
a) Limited; it is not routinely used in non-ST elevation ACS due to the increased risk of bleeding without clear benefit.
b) Essential; it is the primary treatment to dissolve blood clots and restore blood flow in the affected coronary artery.
c) Reserved for cases with significant ST-segment depression on ECG to prevent progression to ST-segment elevation myocardial infarction (STEMI).
d) Recommended only if there are contraindications to coronary angiography and percutaneous coronary intervention (PCI).