closed loop obstruction

closed ·loop ob·struc·tion

obstruction of a segment of intestine either rotated on a fixed point (volvulus) or herniated through a fibrous opening (as under an adhesion or into a hernia); frequently associated with impaired perfusion, ultimately resulting in gangrene.

closed loop ob·struc·tion

(klōzd lūp ŏb-strŭk'shŭn)
Obstruction of a segment of intestine either rotated on a fixed point (volvulus) or herniated through a fibrous opening (as under an adhesion or into a hernia); frequently associated with impaired perfusion ultimately resulting in gangrene.
References in periodicals archive ?
9 Medical literature mentions one case of a migrated IUCD which, after 31 years of insertion, had become embedded in the omentum, and each of the two "arms" of the coil had entered into the lumen of mid ileum, giving rise to a closed loop obstruction.
A portion of small bowel usually herniates through that ring or knot forming a closed loop obstruction with or without strangulation.
Afferent loop obstruction is a specific form of closed loop obstruction with the proximal component being the surgically closed-off duodenal stump (Figs 4 and 5), and the distal/downstream obstruction due to a variety of causes.
At laparotomy however, the caecum was noted to be herniating through the foramen of Winslow causing closed loop obstruction.
A closed loop obstruction results when 2 points along the same length of small bowel are obstructed at a single point.
We report an unusual case of intestinal obstruction in a 23 year old male patient who was found to have an ACB forming a loop around the jejunum (Fig-1) and causing closed loop obstruction.
Because of a competent ileocaecal valve and the resultant closed loop obstruction, a perforation of the caecum had occurred accounting for the free peritoneal air on radiographs.
Volvulus occurs when a segment of the alimentary tract twists on its mesenteric axis with a greater than 180-degree rotation, producing closed loop obstruction of intestinal lumen and mesenteric vessels, possibly leading to ischemia and gangrene.
This was found to be due to closed loop obstruction between the terminal ileum adherent to the pelvis as a result of peritoneal disease and local relapse at the splenic flexure resulting in accumulation of mucus and formation of a mucocele.
In addition to demonstrating the presence of extraluminal lesions, such as masses, adenopathy, soft tissue infiltration, fluid collections, abscesses and vascular anomalies, (8) the greatest advantage of CT is the diagnosis of early or partial obstruction, closed loop obstruction and multiple segments of obstruction.
Mechanical obstruction is not associated with any specific bio-chemical marker, which can help the surgeon for differentiate simple obstructions from ischemia or a closed loop obstruction with impending bowel infarction.