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Medical Definition of Shifting pacemaker
1. A disturbance of the normal cardiac rhythm in which the site of the controlling pacemaker shifts from beat to beat, usually between the sinus and A-V nodes, often with gradual sequential changes in P waves between upright and inverted in a given ECG lead. Synonym: shifting pacemaker. (05 Mar 2000)
Lexicographical Neighbors of Shifting Pacemaker
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