❤️ APPROACH TO ACUTE CORONARY SYNDROME (ACS) — QUICK CLINICAL GUIDE
Acute coronary Syndrome (ACS) is a spectrum of acute myocardial ischemia caused by sudden reduction of coronary blood flow.
Includes: 🔹 ST-Elevation Myocardial Infarction (STEMI) 🔹 Non-ST-Elevation Myocardial Infarction (NSTEMI) 🔹 Unstable Angina (UA)
━━━━━━━━━━━━━━━━━━━━
🚨 STEP 1: SUSPECT ACS
Think ACS in any patient with:
❤️ Central chest pain/pressure/tightness ➡️ Radiation to arm, jaw, neck, back, or epigastrium
Associated symptoms: ▪️ Sweating ▪️ Shortness of breath ▪️ Nausea/vomiting ▪️ Palpitations ▪️ Syncope
⚠️ Elderly, women, and diabetic patients may present atypically.
━━━━━━━━━━━━━━━━━━━━
🩺 STEP 2: INITIAL ASSESSMENT
ABCDE Approach
✅ Airway
✅ Breathing • Check SpO₂ • Give oxygen ONLY if:
SpO₂ <90%
Respiratory distress
Hypoxemia
✅ Circulation • BP • Pulse • IV access • Cardiac monitoring
━━━━━━━━━━━━━━━━━━━━
⚡ STEP 3: ECG WITHIN 10 MINUTES
📌 Obtain and interpret a 12-lead ECG immediately.
STEMI Criteria
🚩 New ST elevation in ≥2 contiguous leads
OR
🚩 New/presumed new LBBB with ischemic symptoms
NSTEMI/UA
🚩 ST depression 🚩 T-wave inversion 🚩 Normal ECG possible
━━━━━━━━━━━━━━━━━━━━
🧪 STEP 4: CARDIAC BIOMARKERS
✅ High-sensitivity Troponin (preferred)
Interpretation:
🔹 Elevated + rise/fall pattern → MI
🔹 Normal serial troponins → consider unstable angina or alternative diagnosis
━━━━━━━━━━━━━━━━━━━━
💊 STEP 5: INITIAL MEDICAL THERAPY
"DAPT + Anticoagulation + Statin"
✅ Aspirin • Loading: 150–325 mg chewable
✅ P2Y12 inhibitor • Ticagrelor or Clopidogrel
✅ Anticoagulation • UFH or LMWH according to strategy
✅ High-intensity statin • Atorvastatin 40–80 mg
Symptom Relief
✅ Sublingual nitroglycerin (if no hypotension)
✅ Morphine only when pain persists despite nitrates
━━━━━━━━━━━━━━━━━━━━
🚑 STEP 6: STEMI MANAGEMENT
Primary PCI = Preferred Reperfusion Strategy
🎯 Door-to-balloon time <90 minutes
If PCI unavailable within recommended timeframe:
✅ Fibrinolysis (if no contraindication)
🎯 Door-to-needle time <30 minutes
⚠️ Time is muscle.
━━━━━━━━━━━━━━━━━━━━
🫀 STEP 7: NSTEMI / UNSTABLE ANGINA MANAGEMENT
Risk Stratification
Use: ✅ GRACE Score ✅ TIMI Score
High-Risk Features
🚩 Hemodynamic instability
🚩 Recurrent chest pain
🚩 Dynamic ECG changes
🚩 Significant troponin elevation
➡️ Early invasive angiography (within 24 hours)
━━━━━━━━━━━━━━━━━━━━
⚠️ WATCH FOR COMPLICATIONS
🚨 Arrhythmias
🚨 Cardiogenic shock
🚨 Acute heart failure
🚨 Mechanical complications • Papillary muscle rupture • Ventricular septal rupture • Free wall rupture
🚨 Recurrent ischemia
━━━━━━━━━━━━━━━━━━━━
🛡️ SECONDARY PREVENTION
Before discharge:
✅ Dual antiplatelet therapy (usually 12 months)
✅ High-intensity statin
✅ Beta-blocker (if not contraindicated)
✅ ACE inhibitor/ARB when indicated
✅ Smoking cessation
✅ BP, lipid, and diabetes control
✅ Cardiac rehabilitation
#ACS #MI #STEMI #NSTEMI #MediNerd #cardiology #MedicalEducation #medicine
