Moussa Zein Aldine: Acute Coronary Syndrome Every Minute Matters
Moussa Zein Aldine, Medical Instructor at CIS College, Online Branch, shared a post on LinkedIn:
“Acute Coronary Syndrome, Recognize fast, Treat early
ACS is a time critical spectrum of myocardial ischemia caused by acute coronary plaque disruption and thrombosis.
It includes:
- STEMI ST elevation myocardial infarction
- NSTEMI non ST elevation myocardial infarction
- Unstable angina ischemia without myocardial necrosis
The First 10 minutes matter
A patient with suspected ACS should have:
- ABC assessment plus vital signs
- Cardiac monitoring
- IV access
- 12 lead ECG within 10 minutes
- Serial ECGs if the first ECG is nondiagnostic but suspicion remains high
- High sensitivity cardiac troponin testing
Critical point:
Do not wait for troponin results when the ECG demonstrates STEMI requiring immediate reperfusion.
ECG Clues
STEMI
New ST segment elevation in appropriate contiguous leads should trigger an immediate reperfusion pathway.
NSTEMI ischemia
ST depression and or dynamic T wave abnormalities may support the diagnosis.
A normal initial ECG does not exclude ACS.
Troponin
High sensitivity cardiac troponin is preferred.
Interpret it dynamically:
Clinical presentation plus ECG plus serial troponin
A single negative early troponin may be insufficient because biomarkers can initially be normal.
Initial Managment
Depending on the clinical scenario and contraindications:
- Aspirin loading
- P2Y12 inhibitor according to the selected ACS revascularization strategy
- Anticoagulation when indicated
- High intensity statin
- Analgesia when appropriate
- Nitrates in suitable patients
Oxygen is NOT routinely required.
Give oxygen when there is hypoxemia or respiratory distress.
STEMI is a Reperfusion Emergency
When STEMI is diagnosed:
Primary PCI is preferred when it can be performed within the appropriate time window.
Do not delay reperfusion while waiting for troponin.
Watch for complications
ACS can rapidly progress to:
- Ventricular arrhythmias
- Cardiogenic shock
- Acute pulmonary edema
- Acute heart failure
- Mechanical complications
- Sudden cardiac death
Clinical Pearls
- Normal ECG does not equal no ACS
- Normal early troponin does not equal no MI
- STEMI think reperfusion immediately
- Do not routinely give oxygen to normoxic patients
- Avoid nitrates with significant hypotension, suspected right ventricular infarction, or recent PDE 5 inhibitor use.
The take home message
In ACS, minutes matter.
Recognize ischemia early, obtain the ECG rapidly, interpret troponin in context, and activate reperfusion pathways without unnecessary delay.”
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