{
    "abstract": "To develop and validate a nomogram for predicting the risk of adverse events (intraoperative massive haemorrhage or retained products of conception) associated with the termination of Caesarean scar pregnancy (CSP). Data were retrospectively collected from patients diagnosed with CSP who underwent Dilation and Curettage (D&C) at two hospitals. This data was divided into internal and external cohorts for analysis. The internal cohort was randomly split, with 70% of the data designated for a training set and 30% for an internal validation set. The external cohort served exclusively as the external validation set. LASSO and logistic regression techniques were employed to select variables and construct the nomogram. The performance of the nomogram was evaluated using various methods, including C-index, calibration curve, decision curve analysis (DCA), and clinical impact curve analysis (CICA), to assess its identification, calibration, and clinical effectiveness. The prediction nomogram included several predictors, such as scar thickness, type of CSP, gestational sac diameter, and blood flow. It demonstrated strong discrimination, with a C-index of 0.83 (95% confidence interval: 0.77-0.89). Furthermore, in the internal validation set, a high C-index of 0.78 was achieved, while in the external validation set, it reached 0.83. Additional assessments using calibration curve analysis, DCA, and CICA indicated robust agreement between the nomogram's predictions and actual observations, highlighting its utility and reliability. The developed nomogram shows excellent discriminative ability and calibration, with the potential for effective local prediction of adverse events in CSP.",
    "authors": [
        {
            "affiliation": "Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, People's Republic of China.",
            "firstname": "Xiaoyi",
            "initials": "X",
            "lastname": "Xiao"
        },
        {
            "affiliation": "Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, People's Republic of China.\nDepartment of Medical Imaging, Yueyang Central Hospital, No. 39 Dongmaoling Road, Yueyang, 414020, Hunan, China.",
            "firstname": "Zhichao",
            "initials": "Z",
            "lastname": "Feng"
        },
        {
            "affiliation": "Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, People's Republic of China.",
            "firstname": "Ting",
            "initials": "T",
            "lastname": "Li"
        },
        {
            "affiliation": "Department of Intensive Care Unit, Li County People's Hospital, Changde City, Hunan, China.",
            "firstname": "Hong",
            "initials": "H",
            "lastname": "Qiao"
        },
        {
            "affiliation": "Department of Ultrasound, The First Hospital of Hunan University of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, 410021, Hunan, People's Republic of China. zhuyun@hnucm.edu.cn.",
            "firstname": "Yun",
            "initials": "Y",
            "lastname": "Zhu"
        }
    ],
    "conclusions": null,
    "copyrights": "\u00a9 2024. The Author(s).",
    "doi": "10.1038/s41598-024-82894-7",
    "journal": "Scientific reports",
    "keywords": [
        "Adverse event",
        "Caesarean scar pregnancy",
        "LASSO",
        "Nomogram"
    ],
    "methods": null,
    "publication_date": "2024-12-29",
    "pubmed_id": "39733108\n12666214\n31910272\n31972162\n32127144\n26764166\n29052024\n18792059\n37676250\n25851932\n32064429\n38102587\n28631355\n23296477\n29450694\n2238263\n35974321\n33984726\n23836523\n31049875\n34301391\n37355427\n37131042\n37358602\n38520306\n32202174\n28612958\n26453977\n23236034",
    "results": null,
    "title": "Predictive nomogram of ultrasound indicators for the termination outcome of caesarean scar pregnancy.",
    "xml": "<Element 'PubmedArticle' at 0x788505be9b70>"
}