Free air in the peritoneal cavity is most commonly caused by what?
Duodenal or gastric ulcer perforation.
Postoperative pneumoperitoneum usually resolves in how many days?
3 to 4 days
In postoperative pneumoperitoneum.
Failure of progressive resolution, or an increase in the amount of air is suggestive of what?
Leak of bowel anastomoses or sepsis.
Pneumoperitoneum in the absence of a ruptured viscus may occur with what processes?
Air introduced through the female genital tract by orogenital insufflation or in association with pulmonary emphysema, alveolar rupture, and dissection of air into the peritoneal cavity.
Chest radiograph view that is most sensitive for free air.
Upright chest radiograph
Good place to look for pneumoperitoneum in CT.
Peritoneal recess between the liver and diaphragm.