Guidelines to laparoscopic management of acute cholecystitis

The present work aims at identifying preoperative variables that may help the surgeon choosing the most appropriate operative approach in various clinical presentation of acute cholecystitis.

Conversion rates up to 60% have been reported for laparoscopic management of acute cholecystitis. Previous works indicate that the severity of the gallbladder inflammatory process represents the main cause of laparoscopic conversion. The influence of converting a laparoscopic cholecystectomy for acute cholecystitis to open surgery on the post-operative course remains questionable. Objective preoperative variables correlated to the severity of cholecystitis and predictive of laparoscopic cholecystectomy failure remain to be identified.

Seven preoperative and five post-operative variables were compared among a continuous series of 62 patients operated for acute cholecystitis either by a successful laparoscopic procedure (37 patients) or by a laparoscopic procedure converted to open surgery (14 patients) or directly by open surgery (11 patients). The post-operative outcome of patients in the 3 groups were compared. Determinant preoperative factors correlated with the need to convert a laparoscopic procedure were searched by the CHI square test for independance and by a multivariate logistic regression analysis.

Converting a laparoscopic cholecystectomy for acute cholecystitis to open surgery does not worsen the patients early post-operative course as long as conversion is decided rapidly and before peroperative complications arise. Three preoperative independent variables predictive of the need to convert a laparoscopic cholecystectomy for acute cholecystitis were identified: The thickness of the gallbladder wall, preoperative C reactive protein seric levels and finally the delay between the start of acute symptoms of cholecystitis and surgery.

The post-operative outcome of patients operated for acute cholecystitis depends more on the severity of the disease than on the type of the surgical procedure. Patients with a perforated cholecystitis (grade III) should better be handled immediately by open surgery. Patients with acute edematous cholecystitis (grade I) or with empyema or gangrenous cholecystitis (grade II) coming early to surgery (within 72 hrs) and having seric preoperative CRP levels less than 10 mg/% represent the best candidates to laparoscopic surgery.