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21 paź 2014 · The most common presenting sign is melena [ 41 ]. Due to physiologic changes including decreased abdominal musculature, rigidity is absent in approximately 80% of elderly patients who present with perforated PUD, and free air is appreciated on only about 40% of plain radiographs [ 37] (Figure 6 ).
5 kwi 2024 · Free gas within the peritoneal cavity can be detected on an abdominal radiograph. The signs created by the free intraperitoneal air can be further divided by anatomical compartments in relation to the pneumoperitoneum:
21 mar 2022 · Free air on CT or Pneumoperitoneum often indicates a life threatening perforation of bowel. There are many causes but a few of the most common are stomach ulcers and diverticulitis. Others can be from medical procedures like colonoscopy where the bowel wall is perforated.
1 lis 2006 · Most patients should have chest and abdominal radiographs, looking in particular for signs of pneumonia, mesenteric ischemia, bowel obstruction, and free air.
Small-bowel obstruction with or without ischemia is the most serious cause of the gasless abdomen in the adult because it may be life-threatening.
Abdominal bloating and distension have a complex etiology that is not well understood. The list of possible causes includes organic, pathological conditions, disorders of gut-brain interaction and an abnormal viscerosomatic reflex.
17 lip 2018 · Complications include hemorrhage and perforation. In elderly patients perforation is often painless, and free air may be absent on plain radiographs in more than 60% of patients.
