• Shu Ting Liu, Yi Feng Li, Qian Yun Wu, Xin Ma, and Yu Zuo Bai.
• Department of Pediatric Surgery, Shengjing Hospital, China Medical University, Shenyang 110004, PR China.
• Am J Emerg Med. 2023 Jun 1; 68: 333733-37.

BackgroundIntussusception is one of the most common acute abdominal diseases in children. Enema reduction is the first-line treatment for intussusception in good condition. Clinically, a history of disease over 48 h is usually listed as a contraindication for enema reduction. However, with the development of clinical experience and therapy, an increasing number of cases have shown that the prolongation of the clinical course of intussusception in children is not an absolute contraindication for enema treatment. This study aimed to analyze the safety and efficacy of enema reduction in children with a history of disease longer than 48 h.MethodsWe conducted a retrospective matched-pair cohort study of pediatric patients with acute intussusception between 2017 and 2021. All patients were treated with ultrasound-guided hydrostatic enema reduction. According to the length of history, the cases were classified into two groups: history <48 h (<48 h group) and history greater than or equal to 48 h (≧48 h group). We generated a 1:1 matched-pair cohort matched for sex, age, admission time, main symptoms, and concentric circle size on ultrasound. Clinical outcomes were compared between the two groups, including success, recurrence, and perforation rates.ResultsFrom January 2016 to November 2021, 2701 patients with intussusception were admitted to the Shengjing Hospital of China Medical University. A total of 494 cases were included in the ≧48 h group, and 494 cases with a history of <48 h were selected for matched comparison in the <48 h group. The success rates of the ≧48 h and <48 h groups were 98.18% vs. 97.37% (p = 0.388), and the recurrence rates were 13.36% vs. 11.94% (p = 0.635), showing no difference according to the length of history. The perforation rate was 0.61% vs. 0%, respectively, with no significant difference (p = 0.247).The comparison of the different history groups showed that in patients with bloody stools, the length of history had no significant effect on the enema reduction outcome(94.90% vs. 86.76%, p = 0.064).ConclusionsUltrasound-guided hydrostatic enema reduction is safe and effective for pediatric idiopathic intussusception with a history of ≧48 h.Copyright © 2023 Elsevier Inc. All rights reserved.

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