Before revision: Proposed mechanisms include diaphragmatic ischemia (insufficient oxygen); stress on the supportive visceral ligaments that attach the abdominal organs to the diaphragm; gastrointestinal ischemia or distension; cramping of the abdominal musculature; ischemic pain resulting from compression of the celiac artery by the median arcuate ligament ; aggravation of the spinal nerves; or, most likely, irritation of the parietal peritoneum (abdominal lining).
After revision: under the diaphragmProposed mechanisms include diaphragmatic ischemia (insufficient oxygen); stress on the supportive visceral ligaments that attach the abdominal organs to the diaphragm; gastrointestinal ischemia or distension; cramping of the abdominal musculature; ischemic pain resulting from compression of the celiac artery by the median arcuate ligament ; aggravation of the spinal nerves; or, most likely, irritation of the parietal peritoneum (abdominal lining).