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Erschienen in: Updates in Surgery 2/2019

22.05.2019 | Original Article

A stepwise learning curve to define the standard for technical improvement in laparoscopic liver resections: complexity-based analysis in 1032 procedures

verfasst von: Luca Aldrighetti, Federica Cipriani, Guido Fiorentini, Marco Catena, Michele Paganelli, Francesca Ratti

Erschienen in: Updates in Surgery | Ausgabe 2/2019

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Abstract

The objective of this study is to define the learning curve in a series of procedures grouped according to their complexity calculated by difficulty index to define a standard for technical improvement. 1032 laparoscopic liver resections performed in a single tertiary referral center were stratified by difficulty scores: low difficulty (LD, n = 362); intermediate difficulty (ID, n = 332), and high difficulty (HD, n = 338). The learning curve effect was analyzed using the cumulative sum (CUSUM) method taking into consideration the expected risk of conversion. The ratio of laparoscopic/total liver resections increased from 5.8% (2005) to 71.1% (2018). The CUSUM analysis per group showed that the average value of the conversion rate was reached at the 60th case in the LD Group and at the 15th in the ID and HD groups. The evolution from LD to ID and HD procedures occurred only when learning curve in LD resections was concluded. Reflecting different degree of complexity, procedures showed significantly different blood loss, morbidity, and conversions among groups. A standard educational model—stepwise and progressive—is mandatory to allow surgeons to define the technical and technological backgrounds to deal with a specific degree of difficulty, providing a help in the definition of indications to laparoscopic approach in each phase of training.
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Metadaten
Titel
A stepwise learning curve to define the standard for technical improvement in laparoscopic liver resections: complexity-based analysis in 1032 procedures
verfasst von
Luca Aldrighetti
Federica Cipriani
Guido Fiorentini
Marco Catena
Michele Paganelli
Francesca Ratti
Publikationsdatum
22.05.2019
Verlag
Springer International Publishing
Erschienen in
Updates in Surgery / Ausgabe 2/2019
Print ISSN: 2038-131X
Elektronische ISSN: 2038-3312
DOI
https://doi.org/10.1007/s13304-019-00658-9

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