Arterial Blood Supply of the Cardiac Conduction System: The cardiac conduction system fails in specific, predictable patterns dictated by its vascular anatomy. • SA node (RCA/LCx) & AV node (∼90% RCA) → bradycardia/block in inferior MI. • His bundle has dual supply (LAD RCA). • RBB & left anterior fascicle (LAD-dependent) → RBBB LAFB in anterior MI. • Left posterior fascicle (LAD RCA) is the most resistant. Understanding this anatomy allows anticipation of conduction deficits in acute coronary s
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Comparing Heart's Conduction in AVRT & AVNRT (Supraventricular Tachycardia) | Daily Cardiology
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Intraventricular conduction delay Stethophone (IVCD) is a critical ECG finding, marked by a widened QRS complex (≥120 ms), reflecting delayed electrical conduction within the ventricles. Left bundle branch block (LBBB) is characterized by a deep S wave in lead V1, broad, single-peaked R waves in lateral leads (I, aVL, V5-V6), and a delayed R wave peak time (>60 ms in V5-V6), indicating left ventricular conduction impairment. Conversely, right bundle branch block (RBBB) presents with a QRS durati
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Cardiac Arrhythmia | Cardiology & Anaesthesia | Anaesthesia Review Hub
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Augustine on Instagram: "My first time pushing Adenosine! Adenosine is used treat supraventricular tachycardia (SVT). The med works by temporarily blocking AV node conduction, which essentially resets the heart’s electrical pathway. It has a very short half-life approx 10 seconds and it’s administered very quickly • Rapid IV push • Immediate saline flush • with Continuous cardiac monitoring It’s important for the Provider to be present at bedside, along with clear patient education before the me
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Uni Medical care on Instagram: "The diving reflex is a physiological response triggered by submerging the face in cold water, leading to bradycardia and a reduced metabolic rate. This reflex is utilized as a non-pharmacological method to terminate supraventricular tachycardia (SVT) by stimulating the vagus nerve, thereby helping restore normal cardiac rhythm. This maneuver is more commonly applied in adults, where the patient is instructed to sit and hold their breath while immersing their face
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