🫀 Normal Sinus Rhythm vs. Arrhythmia 🫀 Know the difference. Save a life. 💡 ✅ Normal Sinus Rhythm (NSR) • Heart rate: 60–100 bpm • Origin: SA node • Regular PQRST waves • Steady rhythm = Efficient circulation ⚠️ Arrhythmia • Irregular heartbeat (too fast, too slow, or erratic) • Can originate from atria, AV node, or ventricles • Examples: Atrial fibrillation, ventricular tachycardia, bradycardia • May cause dizziness, palpitations, syncope, or even cardiac arrest 💬 Swipe to see ECG examples (

Differentiating Sinus Tachycardia vs. Atrial Tachycardia: A Quick Guide ⚡️❤️ 🔹 Sinus Tachycardia · Normal P waves (upright in I, II, aVF) · Gradual onset/offset · Rate usually 100–180 bpm · Always 1:1 AV conduction · 🧠 Physiologic response → Treat the underlying cause 🔹 Atrial Tachycardia · Abnormal P-wave morphology (± inverted/notched) · Abrupt onset/offset (may warm-up/cool-down) · Rate typically 130–250 bpm · ❗AV block possible (key clue!) · ⚡ Intrinsic arrhythmia → Treat the rhythm (vaga