{
  "url": "https://dantelabs.com/traits/abnormal-second-heart-sound",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "abnormal-second-heart-sound",
    "id": "HP:0031661",
    "name": "Abnormal second heart sound",
    "definition": "Any anomaly of the second heart sound (S2), which is produced by aortic (A2) and pulmonic (P2) valve closure. The A2-P2 interval normally increases with inspiration and narrows with expiration.",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-the-cardiovascular-system",
        "name": "Abnormality of the cardiovascular system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-cardiovascular-system"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-heart-sound",
        "name": "Abnormal heart sound",
        "url": "https://dantelabs.com/traits/abnormal-heart-sound"
      }
    ],
    "narrower": [
      {
        "slug": "abnormally-loud-pulmonic-component-of-the-second-heart-sound",
        "name": "Abnormally loud pulmonic component of the second heart sound",
        "genes": 3,
        "url": "https://dantelabs.com/traits/abnormally-loud-pulmonic-component-of-the-second-heart-sound"
      },
      {
        "slug": "fixed-splitting-of-the-second-heart-sound",
        "name": "Fixed splitting of the second heart sound",
        "genes": 1,
        "url": "https://dantelabs.com/traits/fixed-splitting-of-the-second-heart-sound"
      },
      {
        "slug": "paradoxical-splitting-of-the-second-heart-sound",
        "name": "Paradoxical splitting of the second heart sound",
        "genes": 1,
        "url": "https://dantelabs.com/traits/paradoxical-splitting-of-the-second-heart-sound"
      }
    ],
    "genes": []
  }
}