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      • abnormal sinoatrial node conduction
      • abnormal heart electrocardiography waveform feature

    • abnormal P wave   MP:0004070   (3)
    Definition: any anomaly in the P wave which represents atrial depolarization and corresponds to electrical impulses rather than mechanical atria contractions; irregular or absent P waves may indicate arrhythmia and the shape of the P waves may indicate atrial problems [MGI:anna];   [MGI annotations / genotypes]
      (No descendants that are mapped to MPD data)

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