Cardiac Complexes, Premature |
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| Cardiac Complex, Premature; Complex, Cardiac Premature; Premature Cardiac Complex; Beat, Premature; Beats, Premature; Cardiac Complices, Premature; Cardiac Premature Complex; Cardiac Premature Complices; Complex, Premature Cardiac | |
| A premature contraction of the heart that is initiated somewhere other than the sinoatrial node. | |