Abstract
Treatment for bladder outlet obstruction (BOO) caused by benign prostatic hyperplasia (BPH) impairs the quality of life. The potassium tintanyl phosphate (KTP) vaporisation of the prostate offers promising modalities in treatment of BOO. We prospectively determined the impact of KTP-lasertherapy on voiding function, quality of life and sexual function. So far a total of n=123 patients complaining of symptomatic BPH were treated with an 80 watt Laser. N= 40 of them agreed to participate in the study and were evaluated prospectively. Preoperative pressure-flow-studies verified significant bladder outlet obstruction in all cases. Disease specific quality of life and sexual function were assessed using the International Prostate Symptom Score (IPSS) and International Inventory of Erectile Function (IIEF). Three months after treatment follow-up video-urodynamics were carried out to determine changements in pressure flow and bladder function. All patients showed significant improvement after a hospital stay of 4,9 days. The maximum flow rate increased from 9,1 ml/sec preoperatively to 20,2 ml/sec and the amount of residual urine decreased from 98 ml preoperatively to 17 ml immediately after removal of the catheter. Urodynamics after the follow up period showed that the maximum urinary flow improved from 9.7 ml/s preoperatively to 17,6 ml/s and the volume of residual urine decreased from a median of 127.5 ml preoperatively to 45 ml postoperatively. The IPSS and IIEF decreased from a median of 20,4 preoperatively to 8,16 and from a median of 14 preoperatively to 12,7 respectively. The pressure-flow study verified the desobstruction and showed a decline in detrusor pressure at maximum flow from 76,66 cm H2O to 33,79 cm H2O. The urethral opening pressure sank from 75.86 cm H2O preoperatively to 37,51 cm H2O postoperatively. The potassium tintanyl phosphate (KTP) vaporisation of the prostate is a promising new method in the treatment of benign prostatic hyperplasia as shown by the data. Beside its low perioperative and postoperative morbidity due to a high hemostatic property it offers a good tissue debulking effect.
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