1. Ultrasound-Estimated Bladder Weight Predicts Risk of Surgery for Benign Prostatic Hyperplasia in Men Using α-Adrenoceptor Blocker for LUTS
- Author
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Nobuyuki Oyama, Masanobu Maekawa, Yoshiji Miwa, Masaharu Nakai, Hironobu Akino, Hirokazu Ishida, Osamu Yokoyama, and Rikiya Shioyama
- Subjects
Male ,medicine.medical_specialty ,Urologic Surgical Procedures, Male ,Urology ,Urinary system ,Urinary Bladder ,Prostatic Hyperplasia ,urologic and male genital diseases ,Bladder outlet obstruction ,Predictive Value of Tests ,Risk Factors ,Lower urinary tract symptoms ,Prostate ,medicine ,Humans ,Prospective Studies ,Risk factor ,Prospective cohort study ,Adrenergic alpha-Antagonists ,Ultrasonography ,Urinary bladder ,business.industry ,Organ Size ,medicine.disease ,Surgery ,medicine.anatomical_structure ,International Prostate Symptom Score ,business ,Prostatism - Abstract
Although invasive and expensive, the pressure-flow study is known as the reference standard for the diagnosis of bladder outlet obstruction. We investigated the usefulness of ultrasound-estimated bladder weight (UEBW) as a predictor of the need for surgery for benign prostatic hyperplasia (BPH).A total of 97 consecutive male patients50 years old with lower urinary tract symptoms (LUTS) were prospectively enrolled in this study. The surgery rate was correlated with the UEBW, the results of uroflowmetry, the postvoid residual urine volume, prostate volume, and International Prostate Symptom Score.Surgery for BPH was performed in 37 of the 97 patients studied. The surgery rate was associated with a high UEBW (or=35 g), severe LUTS (International Prostate Symptom Score ofor=20), a voided volume of100 mL at free uroflowmetry, and poor uroflow (maximal flow rate of10 mL/s). Multivariate analysis revealed that severe LUTS and a high UEBW were the risk factors for surgery for BPH.The results of our study have shown that the UEBW can be regarded as a useful parameter to identify patients with LUTS who are at risk of needing surgery for BPH.
- Published
- 2008