Prognostic Value of Pressure-flow Study and Clinical Parameters in the Outcome Measurement after Transurethral Prostatectomy in Patients with BPH / 대한비뇨기과학회지

ABSTRACT

PURPOSE: We performed this study to elucidate whether patient`s satisfaction and improvement of clinical parameters after transurethral resection of prostate(TURP) correlate with the degree of preoperative obstruction. We investigated the role of urodynamic studies as a predictor of outcome after TURP. MATERIALS AND METHODS: Parameters including pre-operative symptom scores(IPSS), uroflow rate, prostate volume and urodynamic studies, were assessed in 27 patients undergoing TURP due to BPH. Bladder outlet obstruction was assessed by pressure-flow study(PFS). Post-operative evaluation was performed with IPSS and uroflowmetry 3 months after surgery. Post-operative patient`s satisfaction was determined by subjective responses to the questionnaires. The subjective responses, clinical and urodynamic parameters were compared and statistically analyzed. RESULTS: Eighteen patients(67%) had preoperative bladder outlet obstruction(BOO; defined as L-PURR> or =3), while 14(52%) demonstrated associated detrusor instability(DI). Significant improvements in IPSS, quality of life, peak flow rate and residual urine were noted in all patients post-operatively(p or =3) and 91%(L-PURR<3). CONCLUSIONS: No differences in the improvements of clinical parameters except voiding symptom scores were noted between obstructive and non-obstructive BPH. However, patient`s satisfaction after surgery was higher for patients in whom preoperative pressure-flow study confirmed obstruction. Also, obstructive parameters such as L-PURR or URA may be useful in predicting postoperative results.