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10 Cards in this Set
- Front
- Back
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If the mean QRS axis is between ------the patient has right axis deviation
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90 and 180°
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Right axis deviation is quickly identified by looking at lead one- if lead one is negative right axis deviation is present. This is commonly seen in patients with
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COPD and cor pulmonale
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Left axis deviation is present when the main axis is between -------- on the hexaxial reference circle
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90° and -90°
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One small grid on an electrocardiograph paper is equal to
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0.04 seconds
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Sinus arrhythmias are common and are recognized by the
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irregular spacing between the QRS complexes.
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In first-degree heart block, the PR interval is longer than
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0.20 seconds.
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Third-degree heart block is the most serious of the different types of heart block and it indicates that the conduction system between
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atria in the ventricles is completely blocked
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Normally the QRS complex is shorter than
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0.12
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The PR interval is normally less than
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0.20 seconds
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During the fully polarized and resting state ----- is on the inside and ----is on the outside during depolarization it is reversed
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sodium; potassium
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