🧠 STEP 10 — Student Memory Support
🃏 1️⃣ High-Yield Flashcards
What is acute coronary syndrome?
What are the three main conditions in ACS spectrum?
What is the most common initiating event in ACS?
What differentiates unstable angina from NSTEMI?
What does raised cardiac troponin indicate?
What is the hallmark morphology of myocardial infarction?
Why is the subendocardium most vulnerable in MI?
Which complication is a major early cause of death after MI?
Which post-MI time period is dangerous for wall rupture?
What is the basic emergency management logic in STEMI?
What is the mechanism of aspirin in ACS?
What does DAPT usually mean in ACS?
Which antiplatelet group blocks the final common pathway of platelet aggregation?
How does unfractionated heparin work?
Which test monitors unfractionated heparin?
What is the antidote for heparin overdose?
How does warfarin work?
Which test monitors warfarin therapy?
What reverses warfarin effect?
What is the most feared adverse effect of thrombolytic therapy?
🧠 2️⃣ Mnemonics
Mnemonic Title: ACS Spectrum
Mnemonic Word: U-N-ST
Meaning:
U = Unstable angina → troponin normal
N = NSTEMI → troponin raised, no ST elevation
ST = STEMI → ST elevation, urgent reperfusion
Mnemonic Title: MI Pathogenesis Flow
Mnemonic Word: P-T-O-I-N
Meaning:
P = Plaque rupture
T = Thrombus formation
O = Occlusion of coronary artery
I = Ischemia
N = Necrosis
Mnemonic Title: Antiplatelet Drug Classes
Mnemonic Word: A-P-G-D
Meaning:
A = Aspirin
P = P2Y12 inhibitors
G = GP IIb/IIIa inhibitors
D = Dipyridamole / Cilostazol
Mnemonic Title: Major MI Complication Groups
Mnemonic Word: E-P-M-L
Meaning:
E = Electrical complications
P = Pump failure
M = Mechanical rupture
L = Late complications
📋 3️⃣ Memory Tables
Table 1: ACS Spectrum — Common KMU Trap
| Feature | Unstable Angina | NSTEMI | STEMI |
|---|---|---|---|
| Main problem | Ischemia | Necrosis | Transmural infarction |
| Troponin | Normal | Raised | Raised |
| ECG | Normal / ST↓ / T inversion | ST↓ / T inversion | ST elevation |
| Key action | Risk assessment | Antiplatelet + anticoagulant | Urgent reperfusion |
Table 2: Heparin vs Warfarin
| Feature | Heparin | Warfarin |
|---|---|---|
| Mechanism | Activates antithrombin III | Blocks vitamin K recycling |
| Onset | Rapid | Slow |
| Route | Parenteral | Oral |
| Monitoring | aPTT for UFH | PT/INR |
| Pregnancy | Safer | Contraindicated |
| Antidote | Protamine sulfate | Vitamin K |
⚡ 4️⃣ Rapid Revision Points
Must Remember
• ACS is an emergency chest-pain syndrome caused by acute myocardial ischemia.
• Most ACS begins with unstable plaque rupture and thrombosis.
• Troponin rise means myocardial necrosis.
• MI shows coagulative necrosis.
• STEMI requires urgent reperfusion.
• Ventricular arrhythmia is a major early fatal complication of MI.
• Wall rupture is classically feared around 3–7 days after MI.
• Aspirin irreversibly blocks platelet COX-1.
• DAPT means aspirin plus a P2Y12 inhibitor.
• UFH is monitored by aPTT and reversed by protamine sulfate.
• Warfarin is monitored by PT/INR and reversed by vitamin K.
• Thrombolytics can cause life-threatening intracranial hemorrhage.
🩺 5️⃣ Clinical Memory Hooks
Clinical Hook 1:
Crushing chest pain + sweating + ST elevation → STEMI → urgent reperfusion.
Clinical Hook 2:
Chest pain at rest + raised troponin + no ST elevation → NSTEMI.
Clinical Hook 3:
Chest pain at rest + normal troponin → unstable angina.
Clinical Hook 4:
MI patient dies suddenly in first few hours → ventricular arrhythmia.
Clinical Hook 5:
MI patient collapses 3–7 days later with tamponade → free wall rupture.