All statements are true regarding non-ST elevation acute coronary syndromes (NSTE-ACS) and ST elevation myocardial infarctions (STEMI) except ?
**Core Concept**
Non-ST elevation acute coronary syndromes (NSTE-ACS) and ST elevation myocardial infarctions (STEMI) are two forms of acute myocardial infarctions (AMI) with distinct electrocardiographic (ECG) characteristics. NSTE-ACS is characterized by the presence of ST-segment depression or T-wave inversion without ST-segment elevation, whereas STEMI is marked by ST-segment elevation in two or more contiguous ECG leads.
**Why the Correct Answer is Right**
The management of NSTE-ACS and STEMI involves early reperfusion therapy, including primary percutaneous coronary intervention (PCI) or fibrinolysis. However, the choice of reperfusion therapy depends on the patient's risk profile, time to treatment, and availability of PCI. **Option C** is incorrect because fibrinolysis is not recommended for STEMI patients who can undergo primary PCI within 90 minutes of first medical contact, as PCI is associated with better outcomes and lower mortality rates compared to fibrinolysis.
**Why Each Wrong Option is Incorrect**
**Option A:** This statement is true because both NSTE-ACS and STEMI are caused by acute coronary occlusion due to atherosclerotic plaque rupture or erosion, leading to myocardial ischemia and infarction.
**Option B:** This statement is true because both conditions require early medical evaluation and treatment to restore coronary blood flow and prevent further myocardial damage.
**Option D:** This statement is true because both conditions have a high risk of adverse outcomes, including recurrent ischemia, arrhythmias, and cardiac death, necessitating close monitoring and aggressive treatment.
**Clinical Pearl / High-Yield Fact**
It is essential to quickly identify STEMI patients who can undergo primary PCI within 90 minutes of first medical contact, as these patients have better outcomes with PCI compared to fibrinolysis.
**Correct Answer: C. Fibrinolysis is recommended for STEMI patients who cannot undergo primary PCI within 90 minutes of first medical contact.**