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Risk factors and management of conversions to an open approach in laparoscopic liver resection: analysis of 265 consecutive cases

(2014) HPB. 16(1). p.75-82
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Abstract
Background: As a consequence of continuous technical developments in liver surgery, laparoscopic liver resection (LLR) is increasingly performed worldwide. Methods: Between January 2004 and December 2011, 265 LLR were performed in 242 patients for various diseases. The experience of LLR is reported focusing on risk factors of conversion and their management. Results: The overall conversion rate was 17/265 (6.4%), equally distributed over the period of the study. Statistically significant factors for conversion were found to be LLR of the postero-superior (P-S) segments (SI, SIVa; SVII; SVIII) (12.7% converted versus 2.5% non-converted groups, P = 0.01) and a major compared with a minor hepatectomy (15.2% vs. 4.6%, P = 0.02 respectively). A R0 resection was achieved in 93.2% of cases. According to Dindo's classification, complications were recorded as grade I (n = 20); grade II (6); grade III (11) and grade IV(1) events (total morbidity rate of 14%). Univariate analysis identified a major hepatectomy and resection involving P-S segments as prognostic factors for conversion whereas multivariate analysis identified the latter as an independent risk factor [P = 0.003, odds ratio (OR) = 5.9, 95% confidence interval (CI) = 1.8-18.8]. Conclusions: LLR can be safely performed with low overall morbidity. According to this experience and irrespective of the learning curve, resections of P-S segments were identified as an independent risk factor for conversion in LLR.

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Chicago
Troisi, Roberto, Roberto Montalti, Jurgen GM Van Limmen, Daniele Cavaniglia, KOEN REYNTJENS, Xavier Rogiers, and Bernard de Hemptinne. 2014. “Risk Factors and Management of Conversions to an Open Approach in Laparoscopic Liver Resection: Analysis of 265 Consecutive Cases.” HPB 16 (1): 75–82.
APA
Troisi, R., Montalti, R., Van Limmen, J. G., Cavaniglia, D., REYNTJENS, K., Rogiers, X., & de Hemptinne, B. (2014). Risk factors and management of conversions to an open approach in laparoscopic liver resection: analysis of 265 consecutive cases. HPB, 16(1), 75–82.
Vancouver
1.
Troisi R, Montalti R, Van Limmen JG, Cavaniglia D, REYNTJENS K, Rogiers X, et al. Risk factors and management of conversions to an open approach in laparoscopic liver resection: analysis of 265 consecutive cases. HPB. 2014;16(1):75–82.
MLA
Troisi, Roberto, Roberto Montalti, Jurgen GM Van Limmen, et al. “Risk Factors and Management of Conversions to an Open Approach in Laparoscopic Liver Resection: Analysis of 265 Consecutive Cases.” HPB 16.1 (2014): 75–82. Print.
@article{5694789,
  abstract     = {Background: As a consequence of continuous technical developments in liver surgery, laparoscopic liver resection (LLR) is increasingly performed worldwide. 
Methods: Between January 2004 and December 2011, 265 LLR were performed in 242 patients for various diseases. The experience of LLR is reported focusing on risk factors of conversion and their management. 
Results: The overall conversion rate was 17/265 (6.4\%), equally distributed over the period of the study. Statistically significant factors for conversion were found to be LLR of the postero-superior (P-S) segments (SI, SIVa; SVII; SVIII) (12.7\% converted versus 2.5\% non-converted groups, P = 0.01) and a major compared with a minor hepatectomy (15.2\% vs. 4.6\%, P = 0.02 respectively). A R0 resection was achieved in 93.2\% of cases. According to Dindo's classification, complications were recorded as grade I (n = 20); grade II (6); grade III (11) and grade IV(1) events (total morbidity rate of 14\%). Univariate analysis identified a major hepatectomy and resection involving P-S segments as prognostic factors for conversion whereas multivariate analysis identified the latter as an independent risk factor [P = 0.003, odds ratio (OR) = 5.9, 95\% confidence interval (CI) = 1.8-18.8]. 
Conclusions: LLR can be safely performed with low overall morbidity. According to this experience and irrespective of the learning curve, resections of P-S segments were identified as an independent risk factor for conversion in LLR.},
  author       = {Troisi, Roberto and Montalti, Roberto and Van Limmen, Jurgen GM and Cavaniglia, Daniele and REYNTJENS, KOEN and Rogiers, Xavier and de Hemptinne, Bernard},
  issn         = {1365-182X},
  journal      = {HPB},
  language     = {eng},
  number       = {1},
  pages        = {75--82},
  title        = {Risk factors and management of conversions to an open approach in laparoscopic liver resection: analysis of 265 consecutive cases},
  url          = {http://dx.doi.org/10.1111/hpb.12077},
  volume       = {16},
  year         = {2014},
}

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