The biodegradable self‐reinforced poly‐dl‐lactic acid spiral stent compared with a suprapubic catheter in the treatment of post‐operative urinary retention after visual laser ablation of the prostate

Abstract

Objective To evaluate the eÃcacy and safety of a biodegdegradation time of the SR-PLA stent was 6 months; spiral fragments were found in the prostatic urethra radable self-reinforced poly-dl-lactic acid (SR-PLA) spiral stent compared with a suprapubic catheter after or the urinary bladder in 20 of the patients on cystoscopy. Improvements in patient-weighted sympvisual laser ablation of the prostate (VLAP) in a randomized study.tom score, mean Q max and PVR were significant in both groups at the 6 month follow-up. The infection Patients and methods The study comprised 45 patients (mean age 67.6 years, range 52-81) with bladder rate increased with the duration of suprapubic catheterization, from 25% (0-3 days) to 44% (>3 days). outlet obstruction caused by benign prostatic hyperplasia who received either a SR-PLA stent (22 patients)Stones were seen in two stented patients during the follow-up. and a suprapubic catheter, or a suprapubic catheter only (23 patients) after undergoing VLAP. The supraConclusion The SR-PLA spiral stent is safe and eÂective for the treatment of post-operative urinary retention pubic catheter was removed when voiding started. The response to VLAP and the eÂect of the stent or after laser therapy. The degradation time of the stent was unnecessarily long compared with the duration catheter were assessed using symptom scores, peak flow rate (Q max ), post-void residual volume (PVR), of prostatic swelling and tissue sloughing after laser therapy. The infection rate depends on the duration stent degradation, infection and outcome. Results Voiding started on the first or second day after of suprapubic catheterization. Keywords Biodegradable materials, laser therapy, prostreatment in 18 (median one day) of 22 patients with a spiral stent and in eight (median 6 days) of 23 tate, prostatic hyperplasia, stents patients with only the suprapubic catheter. The mean gators have reported good results with similar spiral

Urethral stents in benign prostate hyperplasia

“…Stent infection rates, migration rates, and degradation rates were similar to those in other studies [20,31,32]. It was observed that the rate of prostate stent infection was related to the length of time that the suprapubic tube was left in place [33]. Stents that migrate early resulted in obstruction; those that migrated late were asymptomatic.…”

Acute urinary retention

“…Hospitalization would be avoided and the need for prostatectomy almost certainly reduced. A biodegradable self-reinforced poly DL-lactic acid spiral stent has been described to be safe and effective for the treatment of postoperative urinary retention after visual laser ablation of the prostate (VLAP) in a randomized study [73]. Further studies are required to optimize the design, tailor the degradation sequences, incorporate properties such as radio-opacity and produce a range of biodegradable devices that degrade at different rates for different circumstances.…”

Bioartifizielle Materialien in der Urologie

“…Zur Anwendung kam das biologisch abbaubare synthetische Homopolymer Poly-L-lactid (PLLA, Resomer ® L24 M w =650.000 g/mol, M w /M n =, 8 …”

“…Allerdings ergaben sich Komplikationen, die auf eine zu schnelle Degradation zurückgeführt wurden [8].…”