Cardiology

🩺Adult Emergency Drug Card 💊⬇️

🩺An adult emergency drug card outlining medications used in rapid sequence intubation (RSI), cardiac emergencies, sedation/analgesia, and electrolyte imbalances

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❣️Bundle Branch Block

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Ischemic Discomfort❤️

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🔴Brugada Syndrome: A Silent Threat to the Heart⬇️

🔹What is Brugada Syndrome?
A potentially fatal genetic disorder affecting the heart's electrical system, leading to an increased risk of sudden cardiac death—especially during sleep. It is caused by mutations in the SCN5A gene, affecting sodium channel function and cardiac conduction.

🔹Brugada Pattern vs. Brugada Syndrome
👉 Brugada Pattern:
- An incidental ECG finding without symptoms.
- Can be triggered by fever, medications, or electrolyte imbalances.
- Management: Monitor and avoid triggers.

👉 Brugada Syndrome:
- ECG changes + symptoms (syncope, palpitations, sudden cardiac arrest).
- High risk of sudden death, requiring urgent intervention.
- Management: ICD implantation, quinidine therapy.

🔹Types of Brugada ECG Patterns:
1️⃣ Type 1 (Diagnostic): Coved-type ST elevation in V1-V3.
2️⃣ Type 2: Saddleback ST elevation.
3️⃣ Type 3: Features of Type 1 or 2 but less pronounced.

🔹Differential Diagnosis
Brugada pattern can mimic other conditions:
🔍 Right bundle branch block (RBBB)
🔍 Early repolarization
🔍 Acute pericarditis
🔍 Arrhythmogenic right ventricular cardiomyopathy (ARVC)
🔍 Hyperkalemia or electrolyte imbalances
🔍 Ischemic heart disease
🔍 Pectus excavatum (chest wall abnormalities affecting lead placement)

🔹Key Features of Brugada Syndrome:
🩸 Sodium Channelopathy: Autosomal dominant with familial clustering.
⚠️ Symptoms: Syncope, VT, VF, and sudden death during sleep.
🩺 ECG Clues: Coved-type ST elevation + T wave inversion in V1-V3.

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Right vs. Left Heart Failure
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❤️Valvular Heart Disease :

✔️Echocardiographic 🩺& Hemodynamic findings
✔️The guiding principles for medical and Device Management

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🔴Right Ventricular (RV) Infarction: A Must-Know ECG Pattern!⤵️

🔹RV infarction often coexists with inferior MI but is frequently overlooked. Missing it can be dangerous, as treatment differs from LV infarcts!

🔹Here’s how to detect it on ECG ⬇️

1️⃣ When to Suspect RV Infarction?
🔹 Any inferior MI (ST ↑ in II, III, aVF)
🔹 Hypotension + JVD + clear lungs
🔹 Bradycardia, AV block

💡 Inferior MI + hypotension? Always check for RV infarct!

2️⃣ Right-Sided ECG
🚑 Standard ECG misses the right ventricle
🩺 Place right-sided chest leads (V3R–V6R) for better detection
🎯 Most sensitive lead? V4R!
🔹 Lead placement for right-sided ECG:
-V1 stays in place
-V2–V6 are mirrored onto the right side of the chest

3️⃣ Key ECG Signs of RV Infarction

✔️ST elevation in V1 & V4R (Most specific!)
✔️Failure of reciprocal ST depression in V1–V2
✔️ST elevation in lead V1 + ST depression in V2
✔️Hyperacute ST elevation in V4R (82–100% sensitivity)

🚨But here’s the catch…

4️⃣ The Absence of ST Elevation in V3R/V4R Doesn’t Rule Out RV Infarction!

❌No ST ↑ in V3R/V4R? RV infarct still possible! Here’s why:
🟢RV infarction is often patchy → ST changes may be transient
🟢Right-sided ST elevation peaks early → Can normalize quickly.

5️⃣ Why is This Important?

RV infarcts are preload-dependent!

🚨What to AVOID?
❌Nitrates, diuretics, beta-blockers → Can cause severe hypotension!

🩺How to manage?
✔️IV fluids (increase preload)
✔️Inotropes if needed (e.g., dobutamine, milrinone)

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❣️What is Occlusion Myocardial Infarction (OMI)⤵️📌
✔️Time is muscle: need for accurate & early Dx
✔️Dynamic ECG changes of ACS.
✔️STEMI Equivalents: Navigating Hidden Indicators of ACS
✔️From STEMI to OMI: The Paradigm Shift
✔️New classificiation of suspected ACS
✔️OMI ECG criteria

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