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Roboterassistierte radikale Prostatektomie

Vorteil bei adipösen Männern? – Eine Matched-pair-Analyse

DaVinci robot-assisted laparoscopic prostatectomy

Benefit for obese men? – A matched-pair analysis

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Zusammenfassung

Hintergrund

Die radikale retropubische Prostatektomie (RRP) bei adipösen Patienten („Body Mass Index“, BMI ≥ 30) ist mit erhöhter perioperativer Morbidität und schlechterem funktionellen Ergebnis assoziiert. Ziel dieser Studie ist es zu überprüfen, ob die roboterassistierte radikale Prostatektomie (RARP) bei adipösen Patienten eine geringere Morbidität und ein besseres funktionelles Ergebnis gegenüber der RRP ermöglicht.

Patienten und Methode

Wir identifizierten 255 Patienten mit einem Prostatakarzinom (PCA) und BMI ≥ 30, die zwischen 1/2009 und 12/2011 radikal prostatektomiert wurden. Per „propensity score matching“ anhand von Risikofaktoren für eine erhöhte perioperative Morbidität (Nerverhaltung, Lymphadenektomie, Prostatavolumen) wurden gleiche Paare (n = 115/Gruppe) gebildet. Beide Gruppen (RARP vs. RRP) wurden hinsichtlich ihres histopathologischen Ergebnisses, peri- und postoperativen (30 Tage) Morbidität und Kontinenz und Potenz verglichen.

Ergebnisse

Es zeigte sich kein Unterschiede bezüglich der histopathologischen Charakteristika in beiden Gruppen (pT/pN-Stadien, Gleason-Grad, R-Status; alle p > 0,05). Mittlerer Blutverlust (276 ml vs. 937 ml), Transfusionsrate (0,9 % vs. 8,7 %) sowie die Rate der 30-Tage-Komplikationen nach der Clavien-Klassifikation (Clavien ≥ 2; 9,5 % vs. 22,6 %) waren niedriger in der RARP-Gruppe gegenüber RRP (alle p < 0,05). In einem multivariaten logistischen Regressionsmodell zeigte sich RARP vs. RRP signifikant (protektiv) mit dem Risiko einer Komplikation Clavien ≥ 2 assoziiert (Odds Ratio, OR = 0,3; p = 0,005). In der Analyse der postoperativen Kontinenz zeigte die Rate der 3-Monats-Ergebnisse ein Vorteil zugunsten der RARP-Patienten (p = 0,02). Die Auswertung der postoperativen Potenz zeigte keinen signifikanten Unterschied.

Schlussfolgerung

Unsere Beobachtung bezüglich geringerer Transfusions- und Komplikationsraten sowie einem Trend einer besseren postoperativen Frühkontinenz bei RARP sollte in der Therapieberatung von PCA-Patienten mit einem hohen BMI berücksichtigt werden.

Abstract

Background

Open radical retropubic prostatectomy (RRP) in obese patients (BMI ≥30) is associated with increased perioperative morbidity. The aim of the study was to evaluate the possible benefit of DaVinci robotic-assisted laparoscopic prostatectomy (RARP) compared to RRP in obese patients.

Patients and methods

We identified 255 patients with a localized prostate cancer (PCa) and BMI ≥30 treated with radical prostatectomy from January 2009 to December 2011. To adjust for risk factors of increased perioperative morbidity (nerve-sparing, pelvic lymph node dissection, prostate volume), a propensity score-based matching was performed between RRP and RARP (n=115 each group). Both groups were compared by taking into consideration histopathological outcomes as well as peri- and postoperative (30 days) morbidity.

Results

There were no differences in histopathological characteristics (pT/pN-stage, Gleason score, R-stage; all p>0.05) in both groups. Mean blood loss (276 ml vs. 937 ml), transfusion rate (0.9% vs. 8.7%) and 30-day complications according to the Clavien classification system (Clavien ≥ 2; 9.5% vs. 22.6%) were decreased in RARP (all p<0.05). In a multivariate logistic regression model, RARP vs. RRP was associated with a significantly reduced risk of a Clavien ≥ 2 complication during follow-up (OR 0.3; p= 0.0047). Recovery of continence was significantly better for RARP patients after 3 months (p= 0.02). There was no difference in erectile function 12 months postoperatively.

Conclusion

Our findings of decreased transfusion and complication rates and a trend of better early recovery of continence in RARP should be considered in obese patients (BMI >30) scheduled for radical prostatectomy.

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Einhaltung ethischer Richtlinien

Interessenkonflikt. B. Beyer, K. Kühne, K. Böhm, J. Schiffmann, H. Heinzer, U. Michl, H. Huland, M. Graefen, A. Haese und T. Steuber geben an, dass kein Interessenkonflikt besteht. Dieser Beitrag beinhaltet keine Studien an Menschen oder Tieren.

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Beyer, B., Kühne, K., Böhm, K. et al. Roboterassistierte radikale Prostatektomie. Urologe 54, 34–40 (2015). https://doi.org/10.1007/s00120-014-3589-y

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  • DOI: https://doi.org/10.1007/s00120-014-3589-y

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