Dataset Information

Laparoscopic liver mobilization: tricks of the trade to avoid complications.

ABSTRACT: Laparoscopic liver resection is gaining popularity because of the availability of new laparoscopic instruments and advanced techniques. Laparoscopic liver mobilization is not only necessary for pure laparoscopic liver resection but also for laparoscopy-assisted hepatectomy. Laparoscopy-assisted hepatectomy significantly reduces the length of the laparotomy incision, and it is a good educational transition to the more advanced laparoscopic liver resection. Laparoscopic liver mobilization is a simple and easy procedure if surgeons know what challenges to expect. Here, the technique of liver mobilization is summarized, along with those challenges.

SUBMITTER: Ikoma N

PROVIDER: S-EPMC4311998 | biostudies-literature | 2015 Feb

REPOSITORIES: biostudies-literature

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Laparoscopic liver mobilization: tricks of the trade to avoid complications.

Ikoma Naruhiko N Itano Osamu O Oshima Go G Kitagawa Yuko Y

Surgical laparoscopy, endoscopy & percutaneous techniques 20150201 1

Laparoscopic liver resection is gaining popularity because of the availability of new laparoscopic instruments and advanced techniques. Laparoscopic liver mobilization is not only necessary for pure laparoscopic liver resection but also for laparoscopy-assisted hepatectomy. Laparoscopy-assisted hepatectomy significantly reduces the length of the laparotomy incision, and it is a good educational transition to the more advanced laparoscopic liver resection. Laparoscopic liver mobilization is a sim ...[more]

PMID: 25370795

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Project description:BACKGROUND:This study aimed to externally validate and upgrade the recent difficulty scoring system (DSS) proposed by Halls et al. to predict intraoperative complications (IOC) during laparoscopic liver resection (LLR). METHODS:The DSS was validated in a cohort of 128 consecutive patients undergoing pure LLRs between 2008 and 2019 at a single tertiary referral center. The validated DSS includes four difficulty levels based on five risk factors (neoadjuvant chemotherapy, previous open liver resection, lesion type, lesion size and classification of resection). As established by the validated DSS, IOC was defined as excessive blood loss (>?775?mL), conversion to an open approach and unintentional damage to surrounding structures. Additionally, intra- and postoperative outcomes were compared according to the difficulty levels with usual statistic methods. The same five risk factors were used for validation done by linear and advanced nonlinear (artificial neural network) models. The study was supported by mathematical computations to obtain a mean risk curve predicting the probability of IOC for every difficulty score. RESULTS:The difficulty level of LLR was rated as low, moderate, high and extremely high in 36 (28.1%), 63 (49.2%), 27 (21.1%) and 2 (1.6%) patients, respectively. IOC was present in 23 (17.9%) patients. Blood loss of >775?mL occurred in 8 (6.2%) patients. Conversion to open approach was required in 18 (14.0%) patients. No patients suffered from unintentional damage to surrounding structures. Rates of IOC (0, 9.5, 55.5 and 100%) increased gradually with statistically significant value among difficulty levels (P?<?0.001). The relations between the difficulty level, need for transfusion, operative time, hepatic pedicle clamping, and major postoperative morbidity were statistically significant (P?<?0.05). Linear and nonlinear validation models showed a strong correlation (correlation coefficients 0.914 and 0.948, respectively) with the validated DSS. The Weibull cumulative distribution function was used for predicting the mean risk probability curve of IOC. CONCLUSION:This external validation proved this DSS based on patient's, tumor and surgical factors enables us to estimate the risk of intra- and postoperative complications. A surgeon should be aware of an increased risk of complications before starting with more complex procedures.

Dataset Information

Laparoscopic liver mobilization: tricks of the trade to avoid complications.

Publications

Laparoscopic liver mobilization: tricks of the trade to avoid complications.

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