{
  "abstract": "Introduction Carotid-cavernous fistulas (CCFs) are abnormal shunts between branches of the carotid arteries and the cavernous sinus. They can be direct (direct communication between the internal carotid artery and cavernous sinus) or indirect (shunts between meningeal arteries and the cavernous sinus). Overall CCF incidence rate is estimated to 0,37 per 100000 per year. Treatment is almost exclusively by endovascular techniques, but the frequency of treatments is limited in smaller centres.Aim of Study From 2005 to 2021, 28 CCF-treatments were performed in our hospital, all endovascular. Fourteen were direct and fourteen were indirect CCFs.We analyzed all CCFs treated in our hospital to determine if high-quality treatment can be provided in a medium-volume neurovascular center.Method Retrospective quality-control cohort study.Abstract A321 Table 1Overview of preoperative symptoms in indirect and direct CCFsResults We used transarterial coiling in direct CCFs, ICA was preserved in seven of these. In indirect CCFs we used transvenous coiling. Complete cure was achieved after one procedure in 24 patients, and in all patients after retreatments. All patients experienced significant symptom improvement after treatment and 79.2% were asymptomatic after 6–12 months. Two patients with direct CCFs were blind on their ipsilateral eye before treatment and remained so after treatment. Three patients had visual symptoms ipsilateral to their indirect CCFs that normalized after treatment. One patient had asymptomatic microemboli on routine postoperative MRI, otherwise there were no complications to treatments.Abstract A321 Table 2Cure rates after one treatment and cure rates per patient including retreatment for both indirect and direct CCFsConclusion High-quality treatment of CCFs can be provided in a medium-volume neurovascular center.Conflict of Interest No",
  "authors": [
    {
      "affiliations": [
        "Haukeland University Hospital, Bergen, Norway"
      ],
      "name": "Gaute Kjellevold Wathle"
    },
    {
      "affiliations": [
        "Haukeland University Hospital, Bergen, Norway"
      ],
      "name": "Svein Harald Mørkve"
    },
    {
      "affiliations": [
        "Haukeland University Hospital, Bergen, Norway"
      ],
      "name": "Nicola Logallo"
    }
  ],
  "title": "A321 Endovascular treatment of carotid-cavernous fistulas in a medium-sized Scandinavian neurovascular center",
  "uid": "06cb215d-c0fa-59fd-bc46-1aa4034b47b1"
}