{
    "abstract": "To determine the perioperative characteristics associated with an increased risk of postoperative urinary retention (POUR) following vaginal pelvic floor surgery.\nA retrospective cohort study using multivariable prediction modelling.\nA tertiary referral urogynaecology unit.\nPatients undergoing vaginal pelvic floor surgery from January 2015 to February 2020.\nEighteen variables (24 parameters) were compared between those with and without POUR and then included as potential predictors in statistical models to predict POUR. The final model was chosen as the model with the largest concordance index (c-index) from internal cross-validation. This was then externally validated using a separate data set (n\u00a0=\u00a094) from another surgical centre.\nDiagnosis of POUR following surgery while the patient was in hospital.\nAmong the 700 women undergoing surgery, 301 (43%) experienced POUR. Preoperative variables with statistically significant univariate relationships with POUR included age, menopausal status, prolapse stage and uroflowmetry parameters. Significant perioperative factors included estimated blood loss, volume of intravenous fluid administered, operative time, length of stay and specific procedures, including vaginal hysterectomy with intraperitoneal vault suspension, anterior colporrhaphy, posterior colporrhaphy and colpocleisis. The lasso logistic regression model had the best combination of internally cross-validated c-index (0.73, 95%\u00a0CI 0.71-0.74) and a calibration curve that showed good alignment between observed and predicted risks. Using this data, a POUR risk calculator was developed (https://pourrisk.shinyapps.io/POUR/).\nThis POUR risk calculator will allow physicians to counsel patients preoperatively on their risk of developing POUR after vaginal pelvic surgery and help focus discussion around potential management options.",
    "authors": [
        {
            "affiliation": "Division of Female Pelvic Medicine and Reconstructive Surgery, Department of Obstetrics and Gynecology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.",
            "firstname": "Breffini C",
            "initials": "BC",
            "lastname": "Anglim"
        },
        {
            "affiliation": "Department of Medicine, University Health Network and Mt Sinai Hospital, Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.",
            "firstname": "George",
            "initials": "G",
            "lastname": "Tomlinson"
        },
        {
            "affiliation": "Division of Female Pelvic Medicine and Reconstructive Surgery, Department of Obstetrics and Gynecology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.",
            "firstname": "Joalee",
            "initials": "J",
            "lastname": "Paquette"
        },
        {
            "affiliation": "Division of Female Pelvic Medicine and Reconstructive Surgery, Department of Obstetrics and Gynecology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.",
            "firstname": "Colleen D",
            "initials": "CD",
            "lastname": "McDermott"
        }
    ],
    "conclusions": null,
    "copyrights": "\u00a9 2022 John Wiley & Sons Ltd.",
    "doi": "10.1111/1471-0528.17225",
    "journal": "BJOG : an international journal of obstetrics and gynaecology",
    "keywords": [
        "incontinence surgery",
        "postoperative urinary retention",
        "prediction model",
        "prolapse surgery",
        "risk factors",
        "surgical counselling",
        "vaginal surgery"
    ],
    "methods": null,
    "publication_date": "2022-05-22",
    "pubmed_id": "35596931",
    "results": "Among the 700 women undergoing surgery, 301 (43%) experienced POUR. Preoperative variables with statistically significant univariate relationships with POUR included age, menopausal status, prolapse stage and uroflowmetry parameters. Significant perioperative factors included estimated blood loss, volume of intravenous fluid administered, operative time, length of stay and specific procedures, including vaginal hysterectomy with intraperitoneal vault suspension, anterior colporrhaphy, posterior colporrhaphy and colpocleisis. The lasso logistic regression model had the best combination of internally cross-validated c-index (0.73, 95%\u00a0CI 0.71-0.74) and a calibration curve that showed good alignment between observed and predicted risks. Using this data, a POUR risk calculator was developed (https://pourrisk.shinyapps.io/POUR/).",
    "title": "A risk calculator for postoperative urinary retention (POUR) following vaginal pelvic floor surgery: multivariable prediction modelling.",
    "xml": "<Element 'PubmedArticle' at 0x7885026224d0>"
}