• Chen-Hsun Ho, Shih-Ping Liu, Chi-Wei Wang, and Pin-Wen Liao.
• Division of Urology, Department of Surgery, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan; School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan. Electronic address: chho.uro@gmail.com.
• J Formos Med Assoc. 2022 Nov 1; 121 (11): 230823162308-2316.

PurposeThe distal coil of a double-J ureteral stent is considered the major cause of stent-related symptoms. We noticed that some recent studies investigated whether complete intraureteral stent placement (CIU-SP) reduced these symptoms. The current systemic review and meta-analysis aimed to evaluate the safety and the effectiveness of CIU-SP, as compared to conventional stent placement (C-SP).MethodsWe retrieved relevant trials published before December 2021 from three databases, including PubMED, Embase, and Web of Science. The following medical subject heading were used ((complete intraureteral stent) OR (suture stent)) AND (symptom OR pain) AND (randomized OR randomised). The above search was limited to English language publication.ResultsWe identified six prospective randomized trials, all of which investigated a short-term (1-2 weeks) stent placement following uncomplicated ureteroscopic lithotripsy. The meta-analysis revealed that CIU-SP significantly reduced stent-related symptoms: CIU-SP had lower USSQ (Ureteral Stent Symptom Questionnaire) Urinary Symptom Index score (MD -5.13; 95%CI [-5.82,-4.44]; P < 0.00001), lower USSQ Pain Index score (MD -4.21; 95%CI [-5.25,-3.17]; P < 0.00001), and lower VAS pain scale (MD -1.93; 95%CI [-2.17,-1.69]; p < 0.00001). Besides, patients with CIU-SP were less likely to have pain (RR 0.78; 95%CI [0.67,0.91]; p = 0.001). There was no significant difference regarding the USSQ General Health and Work Performance. Both CIU-SP and C-SP had similarly few complications of Clavien-Dindo grade ≥2.ConclusionThis meta-analysis reveals that CIU-SP significantly decreases stent-related urinary symptoms and pain. Based on the current evidence, CIU-SP is ready to be applied in clinical practice, at least in those requiring short-term stent placement following uncomplicated ureteroscopic lithotripsy.Copyright © 2022. Published by Elsevier B.V.

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