Transurethral Microwave Thermotherapy for Management of Benign Prostatic Hyperplasia: One-Year Results with the PRIMUS U + R Device

Abstract

We report on one-year results after transurethral microwave thermotherapy (TUMT) in patients with symptoms due to benign prostatic hyperplasia (BPH). The material consists of 91 cases, treated with the PRIMUS U + R device in a single, one-hour out-patient procedure. The International Prostate Symptom Score (I-PSS), S, fell from baseline 23 (17-27) to 12 (7-18.8), quality of life assessment, L, improved from 4 (3-5) to 2 (1-3) and peak urinary flow increased from 9.6 +/- 0.3 to 11.1 +/- 0.4 (ml/sec) after one year. No changes in postvoiding residuals were observed. Sixty five per cent of the patients were assessed as responders to the treatment. Complications were urinary retention and bacteriuria. Neither enlargement of prostate nor a prominent median lobe, seem to be predictors of subjective outcome. TUMT appears to be a safe and, in the majority of patients, effective measure to relieve symptoms due to BPH.

Transurethral Microwave Thermotherapy in the Management of Lower Urinary Tract Symptoms from Benign Prostatic Obstruction: Follow-up after Five Years

“…This factor was not taken into consideration when selecting patients for the present study. In the short-term follow-up, neither an enlarged median lobe nor a large prostate had any influence on the outcome of TUMT (12). This conclusion holds true in the long-term perspective with regard to the median lobe.…”

“…Whether these are related to ageing processes or prostatic heating cannot be determined. The majority of sideeffects, urinary retention of a few days' duration and lower urinary tract infection (12) occur within a short time after TUMT and are easily treated.…”

“…Ninety-one patients (mean age 69 years, range 53-82) entered the study from May to November 1993 according to the criteria reported previously (12). Basically, patients with symptomatic, uncomplicated voiding from benign prostatic obstruction were selected.…”

“…Long-term data have been less frequently reported (6)(7)(8)(9)(10). This study used the PRIMUS U R device, which works within the lower power range (11), and extends the authors' short-term data (12,13) to include a full 5-year follow-up.…”

Interstitial laser coagulation in patients with lower urinary tract symptoms from benign prostatic obstruction: treatment under sedoanalgesia with pressure‐flow evaluation

“…The void with the highest Q max was considered to be the most representative and was selected for further calculations. The PVR was calculated from suprapubic ultrasonograms using the three‐coordinate technique [ 5]. TRUS of the prostate was conducted using a Brüel & Kjær real‐time scanner (type 1846, 7 MHz multiplane transducer type 8551).…”