An internal hernia is an uncommon cause of small

An internal hernia is an uncommon cause of small bowel obstruction, which may be life-threatening because of the risk of strangulation of the hernia segment in the small bowel. The reported incidence of internal hernias ranges from 0.6% to 5.8% of all small bowel obstructions. Transmesenteric hernias account for approximately 5–10% of all internal hernias. Herniation results from the intestine prolapsing into an abnormal defect of the mesenterium, but the cause of the mesenteric rent remains unclear. Most defects in the mesentery are 2–5 cm in diameter and typically congenital in origin and are located close to the ligament of Treitz or the ileocaecal valve. It has been proposed that 4EGI-1 an increase in intra-abdominal pressure (IAP) may cause the intestine to prolapse into a transmesenteric hernia. This increase in IAP may be due to the prone position adopted while a patient undergoes microscopic discectomy. The prone positioning, which is necessary for lumbar microscopic discectomy, has been studied by numerous researchers to determine its effect on IAP. However, although several authors have claimed that IAP increases in the prone position, other research has revealed no change in IAP in patients who were in the prone position. Despite a lack of consensus, based on the current literature, De Keulenaer et al advised that specific attention should be given to allowing the abdomen to hang free. In this study, the patient was positioned in a prone posture, but his IAP appeared to be within the normal range. However, an episode of involuntary abdominal wall contractions can occur following microscopic discectomy in the recovery stage after using general anesthesia, which may have led to the Valsalva maneuver effect and may have caused an increase in IAP in our patient. The hypothesis in this study was that the abrupt increase of IAP may have caused the intestine to prolapse through the mesenteric defect. The entrapped jejunum was then tightly constricted by the mesenteric defect and confined, leading to obstruction of the small bowel.
Acknowledgments
Introduction
Case report