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Predictive value of voiding pressures in benign prostatic hyperplasia

Sixty‐two patients with prostatism underwent a prospective and blinded evaluation to investigate the usefulness of preoperative measurement of opening, maximum intravesical, and detrusor pressures. Traditional urological methods, including detailed symptom analysis, cystoscopy, and excretory urography were used. In addition, all patients underwent urodynamic testing which entailed spontaneous uroflowmetry, medium‐fill water cysto‐rnetry, and pressure‐flow study. Forty‐three patients were reevaluated at three months and 28 patients at 12 months postoperatively. A weak correlation was found between the various voiding pressures and the symptom scores, flow rate, and minimum urethral resistance. Further analysis revealed that patients with normal preoperative pressures did as well postoperatively as patients with elevated preoperative pressures. No role for routine preoperative measurement of voiding pressures in patients with prostatism could be identified.