Basic ECG Interpretation - Sha-conferences.com
Basic ECG Interpretation - Sha-conferences.com
Basic ECG Interpretation - Sha-conferences.com
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<strong>Basic</strong> <strong>ECG</strong> <strong>Interpretation</strong><br />
for Nurses<br />
Adel A. Hasanein, RN, BSN<br />
Academic Coordinator<br />
NED‐KFMC
Outline<br />
• Definition of the <strong>ECG</strong><br />
• Types of pathology can we identify and study<br />
from <strong>ECG</strong>s<br />
• Review of the conduction system<br />
• <strong>ECG</strong> waveforms and intervals<br />
• Determining heart rate<br />
• <strong>ECG</strong>‐<strong>com</strong>mon rhythm hth abnormalities<br />
Adel Hasanein
What is an <strong>ECG</strong><br />
An Electrocardiogram (<strong>ECG</strong> or EKG) is:<br />
A grafical representation of the<br />
electrical activity of the heart.<br />
Adel Hasanein
What types of pathology can we identify<br />
and study from <strong>ECG</strong>s <br />
• Arrhythmias<br />
• Myocardial ischemia and infarction<br />
• Pericarditis<br />
• Chambers hypertrophy<br />
• Electrolyte disturbances (i.e. hyperkalemia,<br />
hypokalemia)<br />
• Drug toxicity (i.e. digoxin and drugs which<br />
prolong the QT interval)<br />
Adel Hasanein
<strong>Basic</strong> conduction mechanisms<br />
• Sinoatrial node (SA<br />
node)‐ primary<br />
pacemaker of the<br />
heart<br />
• Atrioventricular node<br />
(AV node)<br />
• His Bundle<br />
• Bundle branches<br />
• Purkinje fibers<br />
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<strong>ECG</strong> Waveforms & Intervals<br />
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<strong>ECG</strong> Paper<br />
•Vertically:<br />
each large square = 0.5 mv.<br />
• Horizontally<br />
each large square = 0.2 sec.<br />
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Determining Heart Rate<br />
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Quiz Question:<br />
What is the width of the normal<br />
QRS <strong>com</strong>plex in little squares<br />
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Fundamentals of Rhythm<br />
<strong>Interpretation</strong><br />
• P wave morphology<br />
• PR interval<br />
• QRS Morphology<br />
• Rate & Rhythm<br />
• Conduction ( P‐QRS Relation)<br />
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Normal ‐ Sinus Rhythm<br />
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Supraventricular Tachycardia (SVT)<br />
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Premature Ventricular Contractions<br />
(PVC’s)<br />
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Polymorphic Ventricular Tachycardia<br />
(Torsades de pointes)<br />
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Polymorphous ventricular tachycardia<br />
(Torsade de pointes)<br />
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Ventricular fibrillation<br />
Coarse VF<br />
Fine VF<br />
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