Prostate volume reduction following pure transurethral bipolar plasma vaporization and conventional transurethral resection of the prostate: a prospective investigation using transrectal 3D ultrasound volumetry.
- Kranzbühler B Department of Urology, University Hospital Zürich, University of Zürich, Frauenklinikstr. 10, 8091, Zurich, Switzerland.
- Gross O Department of Urology, University Hospital Zürich, University of Zürich, Frauenklinikstr. 10, 8091, Zurich, Switzerland.
- Fankhauser CD Department of Urology, University Hospital Zürich, University of Zürich, Frauenklinikstr. 10, 8091, Zurich, Switzerland.
- Wettstein MS Department of Urology, University Hospital Zürich, University of Zürich, Frauenklinikstr. 10, 8091, Zurich, Switzerland.
- Grossmann NC Department of Urology, University Hospital Zürich, University of Zürich, Frauenklinikstr. 10, 8091, Zurich, Switzerland.
- Hefermehl LJ Department of Urology, University Hospital Zürich, University of Zürich, Frauenklinikstr. 10, 8091, Zurich, Switzerland.
- Zimmermann M Department of Urology, University Hospital Zürich, University of Zürich, Frauenklinikstr. 10, 8091, Zurich, Switzerland.
- Müller A Department of Urology, University Hospital Zürich, University of Zürich, Frauenklinikstr. 10, 8091, Zurich, Switzerland.
- Eberli D Department of Urology, University Hospital Zürich, University of Zürich, Frauenklinikstr. 10, 8091, Zurich, Switzerland.
- Sulser T Department of Urology, University Hospital Zürich, University of Zürich, Frauenklinikstr. 10, 8091, Zurich, Switzerland.
- Poyet C Department of Urology, University Hospital Zürich, University of Zürich, Frauenklinikstr. 10, 8091, Zurich, Switzerland.
- Hermanns T Department of Urology, University Hospital Zürich, University of Zürich, Frauenklinikstr. 10, 8091, Zurich, Switzerland. thomas.hermanns@usz.ch.
- 2016-06-25
Published in:
- World journal of urology. - 2017
3D imaging
Benign prostatic hyperplasia
Transurethral electrovaporization of prostate
Transurethral resection of prostate
Ultrasound of the prostate
Aged
Aged, 80 and over
Electrosurgery
Endosonography
Humans
Imaging, Three-Dimensional
Male
Middle Aged
Organ Size
Prospective Studies
Prostate
Prostatic Hyperplasia
Regression Analysis
Transurethral Resection of Prostate
Urinary Bladder Neck Obstruction
English
PURPOSE
To evaluate and compare postoperative changes in prostate volume and clinical outcome after bipolar plasma vaporization (BPV) and conventional transurethral resection of the prostate (TURP).
PATIENTS AND METHODS
Consecutive series of patients undergoing BPV or TURP were included in this prospective, nonrandomized study. Planimetric volumetry after transrectal three-dimensional ultrasound of the prostate was performed preoperatively and postoperatively after 6 weeks, 6 months and 12 months. Additionally, changes in clinical outcome parameters were assessed and compared between the groups. The reduction ratio and analysis of covariance were used to compare volume changes between BPV and TURP. Multiple regression analysis was performed to assess a possible interaction between preoperative prostate volume and effect of therapy.
RESULTS
A total of 157 patients were included (BPV: n = 68, TURP: n = 89). Median preoperative prostate volume was 43.1 ml in the BPV group and 45.9 ml in the TURP group (p = 0.43). Postoperatively, the prostate volumes decreased significantly in both groups. After catheter removal, the relative residual prostate volume was significantly higher in the BPV group (66.6 vs. 60.8 %; p = 0.02). Thereafter, significant differences were not detectable anymore (12 months: 46.6 vs. 47.1 %; p = 0.82). Regression analysis revealed that tissue ablation after BPV was superior to TURP in prostates <45 ml but inferior in prostates >45 ml. All clinical outcome parameters improved significantly and were not significantly different between the groups.
CONCLUSIONS
Volume reduction and short-term clinical outcome following pure BPV was excellent and comparable to conventional TURP. However, volume reduction seems to be limited in patients with larger prostates.
To evaluate and compare postoperative changes in prostate volume and clinical outcome after bipolar plasma vaporization (BPV) and conventional transurethral resection of the prostate (TURP).
PATIENTS AND METHODS
Consecutive series of patients undergoing BPV or TURP were included in this prospective, nonrandomized study. Planimetric volumetry after transrectal three-dimensional ultrasound of the prostate was performed preoperatively and postoperatively after 6 weeks, 6 months and 12 months. Additionally, changes in clinical outcome parameters were assessed and compared between the groups. The reduction ratio and analysis of covariance were used to compare volume changes between BPV and TURP. Multiple regression analysis was performed to assess a possible interaction between preoperative prostate volume and effect of therapy.
RESULTS
A total of 157 patients were included (BPV: n = 68, TURP: n = 89). Median preoperative prostate volume was 43.1 ml in the BPV group and 45.9 ml in the TURP group (p = 0.43). Postoperatively, the prostate volumes decreased significantly in both groups. After catheter removal, the relative residual prostate volume was significantly higher in the BPV group (66.6 vs. 60.8 %; p = 0.02). Thereafter, significant differences were not detectable anymore (12 months: 46.6 vs. 47.1 %; p = 0.82). Regression analysis revealed that tissue ablation after BPV was superior to TURP in prostates <45 ml but inferior in prostates >45 ml. All clinical outcome parameters improved significantly and were not significantly different between the groups.
CONCLUSIONS
Volume reduction and short-term clinical outcome following pure BPV was excellent and comparable to conventional TURP. However, volume reduction seems to be limited in patients with larger prostates.
- Language
-
- English
- Open access status
- green
- Identifiers
-
- DOI 10.1007/s00345-016-1876-5
- PMID 27339623
- Persistent URL
- https://sonar.ch/global/documents/96900
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