Intestinal permeability and systemic endotoxemia after laparotomic or laparoscopic cholecystectomy.
OBJECTIVE
Because laparoscopic cholecystectomy (LC) is widely recognized as a "mild" or "mini-invasive" kind of surgery, in this prospective nonrandomized study, we investigated the effect of intestinal manipulation on intestinal permeability and endotoxemia, in patients undergoing elective cholecystectomy by comparing the laparoscopic with the laparotomic approach.


BACKGROUND
The intestine is susceptible to operations at remote locations, and the barrier function is altered during intestinal manipulation, leading to bacterial or endotoxin translocation into the systemic circulation.


METHODS
Forty-three patients undergoing elective cholecystectomy were divided into either the laparotomic (n = 22) or laparoscopic (n = 21) approach. Intestinal permeability was measured preoperatively and at day 1 and day 3 after surgery using the lactulose/mannitol absorption test. Serial venous blood samples were taken at 0, 30, 60, 90, 120, and 180 minutes, and at 12, 24, and 48 hours after surgery, for endotoxin measurement using the chromogenic limulus amoebocyte lysate assay.


RESULTS
Intestinal permeability was significantly increased at day 1 [0.106 +/- 0.005 (mean +/- SEM)] in the laparotomic group compared with the preoperative level (0.019 +/- 0.005, P < 0.05) and to the laparoscopic group at day 1 (0.019 +/- 0.005, P < 0.05), which showed no change in comparison with the preoperative level. A significantly higher concentration of systemic endotoxin was detected intraoperatively in the laparotomic group of patients in comparison to the laparoscopic group (P < 0.05). There was a significant positive correlation between systemic endotoxemia and intestinal permeability (r(s) = 0.958; P = 0.001).


CONCLUSIONS
An increase in intestinal permeability and a greater degree of systemic endotoxemia are observed during laparotomic cholecystectomy. This suggests that intestinal manipulation may impair gut mucosal barrier function and contribute to the systemic inflammatory response see in open cholecystectomy.
Department of Surgery, University of L'Aquila, Coppito, Italy. Schietroma2001@yahoo.it
Mario
M
Schietroma
Francesco
F
Carlei
Sonia
S
Cappelli
Gianfranco
G
Amicucci
D000328:Adult; D000368:Aged; D017081:Cholecystectomy, Laparoscopic; D019446:Endotoxemia / Q000097:blood*; D004731:Endotoxins / Q000097:blood*; D005260:Female; D005500:Follow-Up Studies; D005765:Gastrointestinal Agents / Q000493:pharmacokinetics; D006801:Humans; D007421:Intestine, Small / Q000378:metabolism*; D007792:Lactulose / Q000493:pharmacokinetics; D007813:Laparotomy; D008297:Male; D008353:Mannitol / Q000493:pharmacokinetics; D008875:Middle Aged; D010539:Permeability; D011184:Postoperative Period; D011446:Prospective Studies; D012720:Severity of Illness Index; D013549:Sweetening Agents / Q000493:pharmacokinetics
D004731:Endotoxins; D005765:Gastrointestinal Agents; D013549:Sweetening Agents; D008353:Mannitol; D007792:Lactulose