Elevated plasma visfatin levels correlate with conversion of laparoscopic cholecystectomy to open surgery in acute cholecystitis.

Visfatin correlates with inflammation and its levels in peripheral blood are associated with some inflammatory diseases. This study aimed to assess the relationship between plasma visfatin levels and conversion of laparoscopic cholecystectomy to open surgery in acute cholecystitis. One hundred and forty-six acute cholecystitis patients and 146 sex- and age-matched healthy controls were recruited and their plasma visfatin levels were determined using an enzyme immunoassay. 17 patients (11.6%) underwent conversion. Plasma visfatin levels were statistically significantly elevated in all patients (97.2±41.8ng/mL), those with (161.4±71.3ng/mL) or without conversion (88.7±26.9ng/mL), compared to controls (40.3±13.3ng/mL, all P<0.001). A linear regression analysis showed that plasma visfatin levels were positively associated with plasma C-reactive protein levels (t=0.510, P<0.001). A logistic-regression analysis showed that age [odds ratio (OR) 1.160, 95% confidence interval (CI) 1.011-1.332, P=0.035] and plasma visfatin levels (OR 1.035, 95% CI 1.005-1.066, P=0.022) appeared to be the independent predictors of conversion. A receiver operating characteristic curve analysis found that plasma visfatin levels predicted conversion with high area under curve (AUC) (AUC, 850; 95% CI, 0.781-0.903). The AUC of the visfatin concentration was similar to that of age (AUC, 0.738; 95% CI, 0.659-0.807) (P=0.188). Visfatin improved the AUC of age to 0.914 (95% CI, 0.856-0.954) (P=0.011) using a combined logistic-regression model. Thus, high plasma levels of visfatin are associated with systemic inflammation, and may independently predict conversion of laparoscopic cholecystectomy to open surgery in acute cholecystitis.

Preoperative factors predicting poor outcomes following laparoscopic choledochotomy: a multivariate analysis study.

BACKGROUND: Laparoscopic surgery for common bile duct stones varies procedurally from a transcystic approach to laparoscopic choledochotomy (LC) with or without biliary drainage. However, LC is a difficult procedure with higher documented morbidity than the transcystic approach. We retrospectively investigated risk factors for adverse outcomes of LC. METHODS: We used logistic regression models to assess 4 categories of adverse outcomes: overall, complications, conversion to open operation and failed surgical clearance. We calculated the area under the receiver operating characteristic curve to evaluate diagnostic accuracy. RESULTS: We included 201 patients who underwent LC in our analysis. Adverse outcomes occurred in 48 (23.9%) patients, complications occurred in 43 (21.4%), retained stones were observed in 8 (4%), and conversion to laparotomy occurred in 7 (3.5%). Multivariate analysis showed that total bilirubin (BIL) and the presence of medical risk factors (MRFs) were significant predictors of adverse outcomes and complications. We calculated the probability of adverse outcomes (p) using the following formula: logit(p) = 0.977 (MRFs) + 0.014 (BIL) - 2.919. p = EXP (logit(p)) ÷ [1+EXP (logit(p))]. According to their logit(p), all patients were divided into a low-risk group (logit(p) ≤ -1.32, n = 130) and a high-risk group (logit(p) > -1.32, n = 71). Patients in the low-risk group had about a 1 in 10 chance (12 of 130) of adverse outcomes developing. Of the 71 patients in the high-risk group, 36 (50.7%) experienced adverse outcomes. CONCLUSION: High BIL and the presence of MRFs could predict adverse outcomes in patients undergoing LC.

CONTEXTE: La chirurgie laparoscopique pour extraction de calculs biliaires logés dans le cholédoque diffère sur le plan technique de la cholédochotomie laparoscopique (CL) par approche transcystique avec ou sans drain biliaire. Toutefois, la CL est une intervention délicate, qui s'accompagne d'un taux de morbidité documenté plus élevé comparativement à l'extraction transcystique. Nous avons analysé rétrospectivement les facteurs de risque à l'égard d'une issue négative de la CL. MÉTHODES: Nous avons utilisé des modèles de régression logistique pour évaluer 4 catégories d'issue négative : issue négative globale, complications, conversion vers une chirurgie ouverte et échec de l'extraction chirurgicale. Nous avons calculé l'aire sous la courbe de la fonction d'efficacité du récepteur pour évaluer la précision diagnostique. RÉSULTANTS: Nous avons inclus dans notre analyse 201 patients soumis à une CL. Une issue négative est survenue chez 48 patients (23,9 %), des complications chez 43 (21,4 %), la persistance des calculs chez 8 (4 %) et la conversion vers la laparotomie chez 7 (3,5 %). L'analyse multivariée a montré que la bilirubine totale (BIL) et la présence de facteurs de risque médicaux (FRM) étaient des prédicteurs significatifs d'une issue négative et de complications. Nous avons calculé la probabilité de survenue d'une issue négative (p) à l'aide de la formule suivante : logit(p) = 0,977 (FRM) + 0,014 (BIL) ­ 2,919. p = EXP (logit(p)) ÷ [1 + EXP (logit(p))]. En fonction de leur valeur logit(p), tous les patients ont été répartis entre un groupe à faible risque (logit(p) ≤ ­1,32, n = 130) et un groupe à risque élevé (logit(p) > ­1,32, n = 71). Les patients du groupe à faible risque présentaient 1 chance sur 10 (12 sur 130) d'issue défavorable. Parmi les 71 patients du groupe à risque élevé, 36 (50,7 %) ont présenté une issue défavorable. CONCLUSIONS: Un taux de BIL élevé et la présence de FRM pourraient prédire l'issue négative chez des patients soumis à une CL.