Obstruction of the intestine due to paralysis of the intestinal muscles. The paralysis does not need to be complete to cause ileus, but the intestinal muscles must be so inactive that it prevents the passage of food and leads to a functional blockage of the intestine. Ileus commonly follows some types of surgery, especially abdominal surgery. It also can result from certain drugs, spinal injuries, inflammation anywhere within the abdomen that touches the intestines, and diseases of the intestinal muscles themselves. Irrespective of the cause, ileus causes constipation, abdominal distention, and nausea and vomiting. On listening to the abdomen with a stethoscope, few or no bowel sounds are heard (because the bowel is inactive). Also simply called ileus.
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- Iliac horns
Symmetrical bilateral central posterior iliac processes. In other words, horn-like malformations of the crest of both iliac bones of the pelvis. A characteristic finding in the nail-patella syndrome.
- Iliopsoas muscle
A blending of two muscles (the iliacus and psoas major) that run from the lumbar portion of the vertebral column to the femur. The main action of the iliopsoas is to flex the thigh at the hip joint.
The upper part of the pelvic bone, which forms the receptacle of the hip.
- Illness, acute
An illness with an abrupt onset and usually a short course.