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Assessment of the learning curves for intravesical adenoma morcellation using ?Piranha&[copy] device during endoscopic enucleation?

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Sources of Funding: None

Introduction

Morcellation of intravesical adenoma (MIA) is an important part of the endo- scopic enucleation procedure. The aim of this study was to analyse the learning curve of the MIA during endoscopic enucleation of the prostate.?

Methods

We conducted a prospective study of the first 90 patients treated by endoscopic enu- cleation of the prostate by a single surgeon without previous experience of MIA. The population was divided into 3 consecutive groups of 30 patients. MIA was performed with the morcella- tor Pinranha (Wolf®) and disposable blades (Vmax&[copy]). The criteria selected to assess the progress of MIA over time were: duration of MIA (min), the intraoperative complications encountered during MIA and weight morcelleted tissue. The efficacy of MIA was assessed with the ratio weight specimen/MIA duration (min/g) over time.

Results

The three groups were comparable in terms of age, ASA score of prostate volume. A significant decrease in the duration of MIA was found between groups 1 and 2 (12 versus 5.5 min, P < 0.0001), to reach a plateau in the group 3 (3 min). A significant increase in the efficiency of MIA was found between group 1 and 2 (5.5 versus 11 g/min, P < 0.0001), to reach a plateau in the group 3 (20 g/min) (Figure 1). Bladder injuries were limited (7.7%), superficial and encountered in the early learning phase.

Conclusions

In our experience, the MIA required a learning curve estimated between 30 and 60 procedures.

Funding

None

Authors
Benjamin PRADERE
Benoit PEYRONNET
Benoit Bordier
Julien Guillotreau
Kevin Zorn
Vincent Misraï
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