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Electrocardiology
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Basics of ECG Interpretation11 Topics
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Normal ECG Parameters
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ECG Interpretation of Chamber Enlargement4 Topics
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Dysrhythmias
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Bradycardia
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Heart Block3 Topics
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Sick Sinus Syndrome
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Tachycardia8 Topics
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Hyperkalemia
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Myocardial Hypoxia/Ischemia
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Low Amplitude QRS Complex
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Wide QRS Complex
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Bundle Branch Block
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Differentials for ECG Abnormalities
Diagnostic Algorithm
- Determine the ventricular rate – note paper speed.
- Determine the atrial rate – note paper speed.
- Are P and QRS associated?
- same rate
- reasonable PR interval
- consistent PR interval
- Determine PR interval – note paper speed
- does it vary?
- Are there any P waves that are not followed by a QRS complex?
- Are there any QRS complexes with no P waves?
- Determine the width of the QRS complexes – note paper speed.
- Is the rhythm regular or irregular?
- Any premature beats? – note morphology and duration
- Are the P waves positive in lead II?
- Are the QRS complexes of normal morphology?
The critical feature with most dysrhythmias is to identify P waves (if present), note if the atrial rate is equal to, less than, or greater than the ventricular rate, and note if there is any relationship between the P waves and the QRS complexes.
![](http://obivet.com/wp-content/uploads/2021/07/dysrhythmia-chart-2.png)