NSTEMI/Unstable Angina Algorithm

NSTEMI/Unstable Angina Algorithm

NSTEMI/Unstable Angina Algorithm

Note: This document provides a structured summary of the NSTEMI/Unstable Angina Algorithm for educational and reference purposes. It is not a substitute for certified ACLS training and adherence to the latest guidelines published by the American Heart Association (AHA) or other relevant governing bodies. Always consult the most current official guidelines.

1. Suspected ACS (No ST Elevation)

Patient presents with symptoms suggestive of ACS, but no STEMI on ECG.

2. Initial Assessment & Actions (EMS/ED)

ABCs, O2 (if SaO2 < 90%), Aspirin, Nitroglycerin (if BP stable), Morphine (if needed), 12-lead ECG, cardiac markers.

3. ECG & Cardiac Marker Interpretation

No STEMI, but elevated cardiac markers (NSTEMI) or normal markers (Unstable Angina).

4. Risk Stratification

Assess patient risk (e.g., TIMI, GRACE score) for adverse cardiac events.

5. Medical Management

Antiplatelet therapy (Dual), Anticoagulation, Beta-blockers, Statins, Nitroglycerin (if ongoing pain).

6. Invasive vs. Conservative Strategy Decision

Based on risk assessment, decide on early invasive strategy (PCI/CABG) or initial conservative management.

Invasive Strategy

Proceed to cardiac catheterization and revascularization (PCI or CABG) as indicated.

Conservative Strategy

Continue medical management. Monitor for recurrent ischemia or instability. Consider delayed angiography if needed.

8. Ongoing Management & Secondary Prevention

Long-term medical therapy, lifestyle modifications, cardiac rehabilitation, manage risk factors.

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