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Presentation Date / Time
Submission Status
Submitted
Abstract
Abstract Title
Six-Month Outcomes of Thulium Laser Vaporization of the Prostate (ThuVAP): A Single-Surgeon Experience with Complete Drug Discontinuation
Presentation Type
Podium Abstract
Manuscript Type
Clinical Research
Abstract Category *
Benign Prostate Hyperplasia and Male Lower Urinary Tract Symptoms: Minimally Invasive Surgery
Author's Information
Number of Authors (including submitting/presenting author) *
8
No more than 10 authors can be listed (as per the Good Publication Practice (GPP) Guidelines).
Please ensure the authors are listed in the right order.
Country
Japan
Co-author 1
Taro Igarashi roadrunners@hotmail.co.jp Tokyo General Hospital Urology Tokyo Japan * The Jikei University School of Medicine Urology Tokyo Japan
Co-author 2
Shota Kawano s.kawano1515@gmail.com Tokyo Metropolitan Kita Medical Center Urology Tokyo Japan - The Jikei University School of Medicine Urology Tokyo Japan
Co-author 3
Mimu Ishikawa mimuishikawa@yahoo.co.jp Tokyo Metropolitan Hiroo Hospital Urology Tokyo Japan - The Jikei University School of Medicine Urology Tokyo Japan
Co-author 4
Shunsuke Tsuzuki tsuzushun60@gmail.com Jikei University School of Medicine Urology Tokyo Japan -
Co-author 5
Yusuke Koike no-8@mua.biglobe.ne.jp JR General Tokyo Hospital Urology Tokyo Japan - The Jikei University School of Medicine Urology Tokyo Japan
Co-author 6
Takehito Naruoka jutakehito@yahoo.ac.jp Nerima Hikarigaoka Hospital Urology Tokyo Japan - The Jikei University School of Medicine Urology Tokyo Japan
Co-author 7
Akira Furuta a-furuta@rf7.so-net.ne.jp The Jikei University School of Medicine Urology Tokyo Japan -
Co-author 8
Takahiro Kimura tkimura0809@gmail.com The Jikei University School of Medicine Urology Tokyo Japan -
Co-author 9
Co-author 10
Co-author 11
Co-author 12
Co-author 13
Co-author 14
Co-author 15
Co-author 16
Co-author 17
Co-author 18
Co-author 19
Co-author 20
Abstract Content
Introduction
Thulium laser vaporization of the prostate (ThuVAP) has emerged as a safe and minimally invasive alternative to transurethral resection of the prostate (TURP) for treating benign prostatic hyperplasia (BPH). It is particularly suitable for patients with large prostates, middle lobe enlargement, or those receiving antithrombotic agents, owing to its superior hemostatic properties. Although its efficacy and safety have been reported, there remains limited evidence regarding real-world outcomes when all medications for BPH and overactive bladder (OAB) are discontinued postoperatively. This study aimed to assess six-month functional outcomes, focusing on both symptom relief and objective voiding parameters following ThuVAP in a real-world cohort without ongoing pharmacologic therapy.
Materials and Methods
This retrospective study included 17 male patients who underwent ThuVAP between June 2023 and August 2024 by a single experienced urologist. All patients discontinued BPH and OAB medications postoperatively. Parameters evaluated preoperatively and at 6 months included uroflowmetry results—maximum flow rate (Qmax), postvoid residual (PVR), bladder voiding efficiency (BVE)—as well as symptom questionnaires: IPSS (total, storage, voiding subscores, and QOL), and OABSS. OAB was defined as an urgency score ≥2 and total OABSS ≥3. Patients no longer meeting both criteria postoperatively were considered OAB-resolved. Statistical analysis used paired t-tests, and associations with OAB resolution were assessed via Spearman’s correlation.
Results
The mean age was 68.0 years and mean prostate volume was 85.0 mL. Additional baseline patient characteristics, including medication history and urinary retention status, are summarized in Table 1. Among 14 patients without preoperative urinary retention, Qmax improved significantly from 7.4 to 15.0 mL/s (p < 0.0001), PVR decreased from 139.1 to 52.4 mL (p = 0.0008), and BVE increased from 44.8% to 84.3% (p < 0.0001). Total IPSS decreased from 26.2 to 8.1 (p < 0.0001), with storage (p = 0.0003) and voiding (p < 0.0001) subscores also significantly improved. The QOL score improved from 6.2 to 2.1 (p < 0.0001). Among 10 patients with OAB at baseline, 6 (60%) no longer met OAB diagnostic criteria. Younger age was significantly associated with OAB resolution (Spearman’s ρ = –0.855, p = 0.0016). Two of 3 patients with preoperative urinary retention successfully discontinued catheter use. No postoperative urinary retention or reoperation was observed. Figure 1 illustrates the mean changes in all symptom scores and voiding function parameters.
Conclusions
ThuVAP provided significant and comprehensive improvements in both voiding and storage symptoms at 6 months postoperatively, even after complete withdrawal of medical therapy. The procedure demonstrated favorable outcomes in a real-world setting, including among patients with large prostates or prior urinary retention. ThuVAP may serve as an effective and well-tolerated alternative to conventional surgical options for BPH management.
Keywords
Benign prostatic hyperplasia; Laser prostatectomy; Lower urinary tract symptoms; ThuVAP; Voiding dysfunction
Figure 1
https://storage.unitedwebnetwork.com/files/1237/e9d8b24accfd54598707999baabb7199.jpg
Figure 1 Caption
Figure 1. Changes in symptom scores (IPSS, QOL, OABSS) and urodynamic parameters (Qmax, PVR, BVE) before and 6 months after ThuVAP. All values are shown as mean ± standard error. Significant improvements were observed for all parameters. (****p <
Figure 2
https://storage.unitedwebnetwork.com/files/1237/8c46983e1ec506da7fb7ec865a40b19c.jpg
Figure 2 Caption
Table 1. Baseline characteristics of 17 patients who underwent ThuVAP. Data include patient age, prostate volume, medication history, and preoperative urinary retention status.
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