{
  "abstract": "Introduction\n\nUnplanned nephrostomy tube exchange is common, yet patient-level risk factors remain poorly defined. This study aimed to quantify emergency exchange rates and identify clinical and vulnerability-related predictors.Material and methods\n\nAdult patients undergoing nephrostomy placement or exchange in the period January 2021 to October 2024 were retrospectively reviewed. The first (index) procedure per patient was analyzed with up to 90-day follow-up. The primary outcome was emergency tube exchange; patency was time to emergency exchange. Multivariable logistic regression and Cox models identified associated factors.Results\n\nA total of 108 patients were included; median age was 78 years (IQR 68-85) and 65% were male. Frailty (Clinical Frailty Scale ≥5) was present in 32%, and cognitive impairment in 10%. During follow-up, 49 patients (45%) required emergency exchange. The most common indications were partial dislodgement (49%), complete displacement (27%), and catheter obstruction (12%). Estimated tube patency was 70% at 30 days, 62% at 60 days, and 56% at 90 days. On multivariable logistic regression, cognitive impairment was independently associated with emergency exchange (OR 4.8, 95% CI: 1.1-21.0; p = 0.038). Age, sex, frailty, comorbidity burden, laterality, and functional dependence were not significantly associated. In Cox regression, cognitive impairment was also associated with reduced nephrostomy patency (HR 3.1, 95% CI: 1.3-7.2; p = 0.01).Conclusions\n\nEmergency nephrostomy tube exchange is frequent. Cognitive impairment is a key patient-level risk factor for both emergency exchange and reduced tube patency.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Urology, Haukeland University Hospital, Bergen, Norway.",
    "Department of Urology, Haraldsplass Deaconess Hospital, Bergen, Norway.",
    "Department of Clinical Medicine, University of Bergen, Norway.",
    "Department of Radiology, Haukeland University Hospital, Bergen, Norway.",
    "Faculty of Health and Social Sciences, Western Norway University of Applied Sciences, Bergen, Norway."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Rebekka M Dahl"
    },
    {
      "affs": [
        0,
        2
      ],
      "name": "Christian Beisland"
    },
    {
      "affs": [
        0,
        2
      ],
      "name": "Christian Arvei Moen"
    },
    {
      "affs": [
        3
      ],
      "name": "Carl Erik Markhus"
    },
    {
      "affs": [
        4
      ],
      "name": "Elisabeth Grov Beisland"
    },
    {
      "affs": [
        0
      ],
      "name": "Gigja Gudbrandsdottir"
    },
    {
      "affs": [
        0,
        2
      ],
      "name": "Patrick Juliebø-Jones"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9nbhftr980j1v.bib",
  "cited_by": 0,
  "doi": "10.5173/ceju.2026.0028",
  "fulltext_url": "https://europepmc.org/articles/PMC13681935",
  "id": "9nbhftr980j1v",
  "issns": [
    "2080-4806",
    "2080-4873"
  ],
  "landing_url": "https://europepmc.org/article/MED/42904103",
  "language": "eng",
  "licence": "CC-BY-NC-SA",
  "licence_label": "CC BY-NC-SA",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-sa/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2740|Kidney Stones and Urolithiasis Treatments"
    ]
  ],
  "openalex": "W7204920414",
  "pdf_url": "https://europepmc.org/articles/PMC13681935?pdf=render",
  "pmcid": "PMC13681935",
  "pmid": "42904103",
  "published": "2026-06-19",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9nbhftr980j1v.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:59Z",
      "native_id": "MED:42904103",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42904103"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2740|Kidney Stones and Urolithiasis Treatments",
      "subfield": "general"
    }
  ],
  "title": "Nephrostomy tube dislodgement and emergency exchange: a study of clinical and age-related patient factors.",
  "title_text": "Nephrostomy tube dislodgement and emergency exchange: a study of clinical and age-related patient factors.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:19:59Z",
  "url": "https://research.draconitic.com/paper/9nbhftr980j1v",
  "venue": "Central European journal of urology",
  "versions": []
}