Key result
Cardiac arrhythmias result from abnormalities in impulse initiation, impulse conduction, or a combination of both.
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Design
Review
Guides arrhythmia diagnosis and management; leaves open precise mapping of initiation versus conduction defects for targeted therapies.
A N ARRHYTHMIA is caused by an abnormality in the rate, regularity, or site of origin of the cardiac impulse or by certain disturbances in the conduction of the impulse such that the normal sequence of activation of the atria and ventricles is disturbed. Arrhythmias thus may be said to result from abnormalities of impulse initiation, impulse conduction, or both.
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Cranefield et al. (1973) studied this question. Cardiac arrhythmias result from abnormalities in impulse initiation, impulse conduction, or a combination of both.
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