{
  "abstract": "Background\n\nPostsurgical right atrial cicatricial stenosis is a rare iatrogenic complication following extensive atrial reconstruction. When located above the tricuspid valve, this fibrotic tissue may cause supratricuspid obstruction, producing symptoms and hemodynamic findings similar to tricuspid stenosis.Case summary\n\nA 41-year-old man with a history of complex atrial reconstruction using bovine pericardium and a Dacron graft presented with progressive dyspnea 1 year postoperatively. Echocardiography revealed a cicatricial supratricuspid membrane with a peak gradient of 18 mm Hg. Percutaneous balloon dilation was performed with immediate hemodynamic improvement; however, obstruction recurred 3 times at intervals of 8, 6, and 6 months, each successfully managed with repeat dilation.Discussion\n\nGiven the prohibitive surgical risk conferred by 2 prior complex sternotomies, prosthetic atrial reconstruction, and significant systemic comorbidities, as determined by multidisciplinary Heart Team consensus, a percutaneous strategy was adopted. Each intervention achieved gradient reduction; however, fibrotic remodeling of the cicatricial tissue led to recurrent obstruction over time.",
  "abstract_shown": true,
  "affiliations": [
    "Heart Institute (InCor), Universidade de São Paulo (USP), São Paulo, Brazil.",
    "Heart Institute (InCor), Universidade de São Paulo (USP), São Paulo, Brazil. Electronic address: fabio.cardiol@gmail.com."
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 11,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Hernán Patricio García Mejía"
    },
    {
      "affs": [
        0
      ],
      "name": "Marco Antonio Smiderle Gelain"
    },
    {
      "affs": [
        0
      ],
      "name": "Pedro Sérgio Soares Jallad"
    },
    {
      "affs": [
        0
      ],
      "name": "Andre Moreira Nicolau"
    },
    {
      "affs": [
        0
      ],
      "name": "Isabella Diniz Novaes"
    },
    {
      "affs": [
        0
      ],
      "name": "Kevin Rafael De Paula Morales"
    },
    {
      "affs": [
        0
      ],
      "name": "Marcelo Luiz Campos Vieira"
    },
    {
      "affs": [
        0
      ],
      "name": "Carlos M Campos"
    },
    {
      "affs": [
        0
      ],
      "name": "Ludhmila Abrahao Hajjar"
    },
    {
      "affs": [
        0
      ],
      "name": "Alexandre Abizaid"
    },
    {
      "affs": [
        1
      ],
      "name": "Fabio S de Brito"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/agbs51ntxf9ms.bib",
  "cited_by": 0,
  "doi": "10.1016/j.jaccas.2026.110195",
  "fulltext_url": "https://europepmc.org/articles/PMC13669890",
  "id": "agbs51ntxf9ms",
  "issns": [
    "2666-0849"
  ],
  "landing_url": "https://europepmc.org/article/MED/42847577",
  "language": "eng",
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2705|Cardiac Valve Diseases and Treatments"
    ]
  ],
  "openalex": "W7220830768",
  "pdf_url": "https://europepmc.org/articles/PMC13669890?pdf=render",
  "pmcid": "PMC13669890",
  "pmid": "42847577",
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/agbs51ntxf9ms.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:10Z",
      "native_id": "MED:42847577",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42847577"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2705|Cardiac Valve Diseases and Treatments",
      "subfield": "cardiovascular"
    }
  ],
  "title": "Percutaneous Management of Recurrent Postsurgical Right Atrial Cicatricial Stenosis Causing Supratricuspid Obstruction.",
  "title_text": "Percutaneous Management of Recurrent Postsurgical Right Atrial Cicatricial Stenosis Causing Supratricuspid Obstruction.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:10Z",
  "url": "https://research.draconitic.com/paper/agbs51ntxf9ms",
  "venue": "JACC. Case reports",
  "versions": []
}