project: document title: cardiology – ekg interpretation
TRANSCRIPT
Project: Ghana Emergency Medicine Collaborative Document Title: Cardiology – EKG Interpretation Author(s): Patrick Carter (University of Michigan), MD 2012 License: Unless otherwise noted, this material is made available under the terms of the Creative Commons Attribution Share Alike-3.0 License: http://creativecommons.org/licenses/by-sa/3.0/
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5@<"=2*'+"2>4"?>7'3*26+"• P wave: the sequential activation
(depolarization) of the right and left atria
• QRS complex: right and left ventricular depolarization (normally the ventricles are activated simultaneously)
• ST-T wave: ventricular repolarization
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5@<"=2*'+"2>4"?>7'3*26+"• U wave: origin for this wave is not clear - but
probably represents "after depolarizations" in the ventricles
• PR interval: time interval from onset of atrial depolarization (P wave) to onset of ventricular depolarization (QRS complex)
• QRS duration: duration of ventricular muscle depolarization
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5@<"=2*'+"2>4"?>7'3*26+"• QT interval: duration of ventricular depolarization
and repolarization
• RR interval: duration of ventricular cardiac cycle (an indicator of ventricular rate)
• PP interval: duration of atrial cycle (an indicator or atrial rate)
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D. Inferior Infarction A. II, III, AVF B. Right or Left Coronary
A. Most Commonly Right Coronary
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Tachycardia Narrow Complex Wide Complex
Regular ST SVT Atrial flutter
ST w/ aberrancy SVT w/ aberrancy
VT
Irregular A-fib A-flutter w/ variable conduction MAT
A-fib w/ aberrancy
A-fib w/ WPW VT
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Narrow complex, regular; retrograde P waves
Retrograde P waves
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