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  • Title: Urodynamic assessment in the laser treatment of benign prostatic enlargement.
    Author: Te Slaa E, de Wildt MJ, Rosier PF, Wijkstra H, Debruyne FM, de la Rosette JJ.
    Journal: Br J Urol; 1995 Nov; 76(5):604-10. PubMed ID: 8535680.
    Abstract:
    OBJECTIVE: To determine if bladder outlet obstruction can be adequately relieved after laser prostatectomy. PATIENTS AND METHODS: Since November 1992, a total of 105 patients underwent laser treatment of the prostate because of complaints related to benign prostatic enlargement (BPE). To date, urodynamic data from a study of pressure flow analysis are available for 79 patients both at baseline and at 6 months after treatment. Patients were evaluated using changes in symptoms (IPSS symptom score), peak flow rate (Qmax), post-voiding residual volume (PVR), detrusor pressure at maximum flow (Pdet at Qmax), and the linear passive urethral resistance relation (LPURR). Moreover, patients with minimal bladder outlet obstruction were compared to patients with severe bladder outlet obstruction. RESULTS: There was a significant improvement in mean IPSS score from 21.3 at baseline to 5.3 at the 6-month follow-up. The Qmax improved from 7.9 mL/s to 17.8 mL/s, and the PVR decreased from 91.6 mL to 15.6 mL. At baseline, > 80% of the patients were considered obstructed according to the analysis of pressure flow, whereas 6 months after laser treatment, only 5% of the patients were still considered obstructed. A comparison of the outcome between minimally obstructed patients and severely obstructed patients showed comparable improvements. CONCLUSION: Laser therapy of the prostate was, according to urodynamic parameters, capable of relieving outlet obstruction and minimally obstructed patients also showed a significant relief of outlet obstruction.
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