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16 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What area of the heart causes the conduction disturbance called a block?
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AV Node
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Which arrhythmia is not considered a true block?
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1degree AV Block
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Which interval will yield information about the AV Node?
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PRI
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What PRI measurement will you get in a first degree block?
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Greater than .20, abnormally prolonged
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What determines the rate of a first degree block?
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the underlying rhythm
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What block has a constant prolonged PRI with no dropped QRS complex's?
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1st degree AV block
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What block has PRI's that constantly gets longer until a QRS complex is dropped?
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2nd degree AV block type 1
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Mobitz 1 is also know as?
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Wenckebach
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W
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What is the ventricular rate of a Wenckebach?
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Slightly slower than normal because of the dropped QRS complex's
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Does a Wenckebach have a normal P-P Interval's?
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Yes, P-P Intervals remains regular, and the PRI and R-R changes.
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What AV block has constant PRI's and constant R-R Intervals, followed by a dropped QRS complex?
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2nd degree AV block
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What is meant by a variable conduction ratio?
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A varying pattern in which the sinus impulses are being conducted to the ventricles
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Is the R-R-I regular or irregular in a 2nd degree AVB 2?
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Underlying rhythm is usually regular unless the conduction ratio is variable
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What block has complete disocication between Atria and Ventricles?
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3rd degree AV block
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Is CHB regular of irregular?
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Regular
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How would you differentiate between a junctional focus and a ventricular focus?
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A junctional focus will have a narrow QRS (<0.12 at 40-60bpm) and a ventricular focus will have a wide QRS(>0.12 at 20-40bpm).
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