Use of prophylactic large-pore lightweight mesh in the intraperitoneal/onlay position by a purely laparoscopic approach reduced the incidence of parastomal hernia formation. Subcutaneous fat thickness ≥23 mm measured by CT was an independent predictor of parastomal hernia.

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Azpiroz ABSTRACTBackground. The precise relation of intestinal gas to symptoms, particularly

Abdominal distension in patients with severe intestinal dysfunction is related to marked pooling of gut contents, particularly in the small bowel. This increase in content is accommodated within the abdominal cavity by a global and coordinated abdomino-phreno-thoracic response, involving an accommodative ascent of the diaphragm and a compensatory expansion of the chest wall.

Background. Gut content may be determinant in the generation of digestive symptoms, particularly in patients with impaired gut function and hypersensitivity. Since the relation of intraluminal gas to symptoms is only partial, we hypothesized that non-gaseous component may play a decisive role. Methods.Abdominal CT scans were evaluated in healthy subjects during fasting and after a meal (n=15) and in patients with functional gut disorders during basal conditions (when they were feeling well) and during an episode of abdominal distension (n=15). Colonic content and distribution were measured by an original analysis program.Key results. In healthy subjects both gaseous (87±24 mL) and non-gaseous colonic content (714±34 mL) were uniformly distributed along the colon. In the early postprandial period gas volume increased (by 46±23 mL), but nongaseous content did not, although a partial caudad displacement from the descending to the pelvic colon was observed. No differences in colonic content were detected between patients and healthy subjects. Symptoms were associated with discrete increments in gas volume. However, no consistent differences in non-gaseous content were detected in patients between asymptomatic periods and during episodes of abdominal distension. Conclusions & Inferences.In patients with functional gut disorders, abdominal distension is not related to changes in non-gaseous colonic content. Hence, other factors, such as intestinal hypersensitivity and poor tolerance of small increases in luminal gas may be involved.