Risk factors for early recurrence after hydrostatic reduction of intussusception in children and development of a nomogram prediction model
摘要
To identify predictors of early recurrence after hydrostatic reduction of pediatric intussusception and develop a nomogram.
MethodsA total of 412 children with intussusception treated between January 2022 and January 2025 were enrolled. Based on recurrence within 48 h after successful hydrostatic reduction, they were assigned to a recurrent group (n = 37) or a non-recurrent group (n = 375). Clinical and ultrasonographic variables were compared between the groups, and a nomogram was developed and validated from the identified predictors.
ResultsFollowing hydrostatic reduction, some independent predictors of recurrent intussusception in children were identified: symptom-onset time, maximal “target-sign” diameter on ultrasound, concentric-ring anatomic location, bowel-wall thickness, presence of intraluminal lesions, and peritoneal effusion (P < 0.05). A nomogram that integrates these ultrasound indices with clinical variables exhibited excellent calibration and discrimination. Decision-curve analysis further confirmed that the model delivered greater net clinical benefit than either “treat-all” or “treat-none” strategies across the entire range of threshold probabilities.
ConclusionIn this study, we developed a nomogram based on clinical risk factors to predict short-term recurrence of intussusception after ultrasound-guided hydrostatic reduction in children. Age, duration of abdominal pain, maximal diameter of the “target sign” on ultrasound, concentric-ring anatomic location, bowel-wall thickness, intraluminal lesions, and peritoneal effusion were identified as predictors and incorporated into the model. Internal validation demonstrated that this nomogram provides a clear and convenient tool for stratifying recurrence risk in children undergoing ultrasound-guided hydrostatic reduction.