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Clinical Trial
Journal Article
Multicenter Study
Second-generation of temporary implantable nitinol device for the relief of lower urinary tract symptoms due to benign prostatic hyperplasia: results of a prospective, multicentre study at 1 year of follow-up.
BJU International 2019 June
OBJECTIVES: To report the clinical experience with a second-generation of temporary implantable nitinol device (iTIND; Medi-Tate Ltd, Or-Akiva, Israel) for the treatment of lower urinary tract symptoms (LUTS) due to benign prostatic hyperplasia (BPH) after 1 year of follow-up.
PATIENTS AND METHODS: In all, 81 patients with LUTS, International Prostate Symptom Score (IPSS) ≥10, maximum urinary flow rate (Qmax ) ≤12 mL/s, and prostate volume <75 mL, were enrolled in this prospective Research Ethics Committee-approved multicentre study. The main exclusion criteria were: haemostatic disorders, post-void residual urine volume (PVR) >250 mL, obstructive median lobe, and previous prostate surgery. The iTIND was implanted within the bladder neck and the prostatic urethra under light sedation, using a rigid cystoscope. The device was removed 5-7 days later in an outpatient setting. Demographics, perioperative results, complications (according to the Clavien-Dindo system), functional results and quality of life (QoL) were evaluated. Follow-up assessments were conducted at 1, 3, 6 and 12 months postoperatively.
RESULTS: The mean (sd) patient age was 65 (8.9) years, prostate volume was 40.5 (12.25) mL, Qmax was 7.3 (2.6) mL/s, IPSS was 22.5 (5.6), and the median (interquartile range) IPSS QoL score was 4 (2-5). All the implantations were successful, with no intraoperative complications recorded; all patients were discharged on the same day of surgery. The devices were retrieved at a mean (SD) of 5.9 (1.1) days after implantation, typically under topical anaesthesia. No Clavien-Dindo Grade >II complications were recorded. The mean (SD) Qmax at the 1 month follow-up visit was 11.2 (5.7) mL/s and continued to improve thereafter, reaching 14.7 (8.1) mL/s at the 12-month follow-up visit (+100%). The mean (SD) IPSS urinary symptom scores were 11.7 (8.0) after 1 month and further improved to 8.8 (6.4) at the 12-month follow-up (-60%). In parallel, the mean (SD) IPSS QoL score drop reached 1.6 (1.3) by the end of the study. During the 12-month period, two patients (2.4%) required medical therapy for BPH, two patients (2.4%) required transurethral resection of the prostate, whilst 10 patients were lost to follow-up (12.3%). As compared to baseline, none of the 61 sexually active patients who completed the 12-month follow-up period reported sexual or ejaculatory dysfunction.
CONCLUSION: iTIND implantation is feasible, safe and effective in providing relief of BPH-related symptoms, at least until 12 months postoperatively. Sexual and ejaculatory functions are fully preserved. Further studies with a longer follow-up period are needed to assess the durability of these results and to clearly define the indications for iTIND implantation.
PATIENTS AND METHODS: In all, 81 patients with LUTS, International Prostate Symptom Score (IPSS) ≥10, maximum urinary flow rate (Qmax ) ≤12 mL/s, and prostate volume <75 mL, were enrolled in this prospective Research Ethics Committee-approved multicentre study. The main exclusion criteria were: haemostatic disorders, post-void residual urine volume (PVR) >250 mL, obstructive median lobe, and previous prostate surgery. The iTIND was implanted within the bladder neck and the prostatic urethra under light sedation, using a rigid cystoscope. The device was removed 5-7 days later in an outpatient setting. Demographics, perioperative results, complications (according to the Clavien-Dindo system), functional results and quality of life (QoL) were evaluated. Follow-up assessments were conducted at 1, 3, 6 and 12 months postoperatively.
RESULTS: The mean (sd) patient age was 65 (8.9) years, prostate volume was 40.5 (12.25) mL, Qmax was 7.3 (2.6) mL/s, IPSS was 22.5 (5.6), and the median (interquartile range) IPSS QoL score was 4 (2-5). All the implantations were successful, with no intraoperative complications recorded; all patients were discharged on the same day of surgery. The devices were retrieved at a mean (SD) of 5.9 (1.1) days after implantation, typically under topical anaesthesia. No Clavien-Dindo Grade >II complications were recorded. The mean (SD) Qmax at the 1 month follow-up visit was 11.2 (5.7) mL/s and continued to improve thereafter, reaching 14.7 (8.1) mL/s at the 12-month follow-up visit (+100%). The mean (SD) IPSS urinary symptom scores were 11.7 (8.0) after 1 month and further improved to 8.8 (6.4) at the 12-month follow-up (-60%). In parallel, the mean (SD) IPSS QoL score drop reached 1.6 (1.3) by the end of the study. During the 12-month period, two patients (2.4%) required medical therapy for BPH, two patients (2.4%) required transurethral resection of the prostate, whilst 10 patients were lost to follow-up (12.3%). As compared to baseline, none of the 61 sexually active patients who completed the 12-month follow-up period reported sexual or ejaculatory dysfunction.
CONCLUSION: iTIND implantation is feasible, safe and effective in providing relief of BPH-related symptoms, at least until 12 months postoperatively. Sexual and ejaculatory functions are fully preserved. Further studies with a longer follow-up period are needed to assess the durability of these results and to clearly define the indications for iTIND implantation.
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