Stepwise Approach
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R Wave: Basics
Key Points Definition: The R wave is the first positive deflection of the QRS complex, reflecting early ventricular depolarization, predominantly of the left ventricle. Normal progression: Precordial R amplitude increases…
Ischemia & Infarction
Key Points: Why the ECG matters: Fastest way to detect acute occlusion and dynamic ischemia before troponin and often before classic symptoms. ACS is dynamic: Arteries occlude and reperfuse. Serial…
Stepwise Approach to STAT ECGs
Key Points: Consistency Saves Lives: A standardized approach helps you avoid errors in chaotic environments. Many Methods Exist: Rate, rhythm, axis, intervals, voltage, ischemia, conduction — choose an order that…
STAT ECG 101: The Acute Care ECG Approach
Key Points Rapid, Non-Invasive, High-Yield Tool: The STAT ECG is the single best screening test in acute care medicine. It is inexpensive, minimally invasive, and immediately available. Within seconds, it…
QRS Morphology & Proportionality
Key Points QRS Morphology Reflects Conduction Pathways: The shape and width of the QRS complex help differentiate between normal conduction, conduction delays, and ventricular-origin rhythms. QRS–T Wave Proportionality Signals Repolarization…
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