Abstract
The aim of this systematic review was to assess the estimated incidence of pseudoaneurysm (PSA) with follow-up computed tomography (CT) for adult splenic injury with nonoperative management (NOM). A systematic literature search was conducted in MEDLINE, Central, CINAHL, Clinical Trials, and ICTRP databases between January 1, 2010, and December 31, 2023. Quality assessment was performed using the Risk of Bias in Non-randomized Studies of Exposures (ROBINS-E) tool. Adult splenic injury patients who were initially managed with NOM and followed-up by protocolized CT were included. The primary outcome was the incidence of delayed PSA. Secondary outcome measures were delayed angiography and delayed splenectomy. Subgroup analyses were performed between NOM patients without initial splenic angioembolization (SAE) and NOM patients with initial SAE. Twelve studies were enrolled, including 11 retrospective studies and one prospective study, with 1746 patients in total. The follow-up CT rate in the included patients was 94.9%. The estimated incidence of PSA was 14% (95% confidence interval (CI), 8%-21%). The estimated delayed angiography and delayed splenectomy incidence rates were 7% (95% CI, 4%-12%) and 2% (95% CI, 1%-6%), respectively. Subgroup analyses showed that the estimated PSA incidence was 12% in NOM patients without initial SAE (95% CI, 7%-20%) and was also 12% in NOM patients with SAE (95% CI, 5%-24%). The estimated incidence of delayed PSA after follow-up CT for adult splenic injury with NOM was 14%. The estimated incidence of PSA in NOM with initial SAE was similar to that in NOM without initial SAE.
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