| AO | abdominal aorta; achievement orientation; acid output; acridine orange; ankle orthosis; anodal openi... |
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| A/P | abdominal/perineal; antepartum; ascites/plasma [ratio] |
| AT | abdominal thrusts; achievement test; Achilles tendon; Achard-Thiers [syndrome]; adaptive thermogenes... |
| ATI | abdominal trauma index |
| AXR | abdominal x-ray [examination] |
| abdominal pad | A pad made from several layers of gauze folded into a rectangular shape; used as a sponge, for packing off the viscera in abdominal operations, and in other ways. Synonym: abdominal pad. (05 Mar 2000) |
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| abdominal pain | Sensation of discomfort, distress, or agony in the abdominal region. (12 Dec 1998) |
| abdominal panniculectomy | <procedure, surgery> A procedure to remove fatty tissue and excess skin from the lower to middle portions of the abdomen. This procedure is indicated in some individual's who have lost considerable weight resulting in loose hanging folds of skin in the abdominal area. Recovery is in 2-4 days. (11 Mar 1998) |
| abdominal part of aorta | <anatomy> The largest arterial conduit below the diaphragm. This term refers to the portion of the aorta below the diaphragm to the bifurcation into the right and left common iliac arteries. It supplies blood to the abdominal viscera, pelvic organs and lower extremities. (20 Jun 2000) |
| abdominal part of oesophagus | The part of the oesophagus inferior to the diaphragm. See: oesophagus. Synonym: pars abdominalis oesophagi. (05 Mar 2000) |
| abdominal part of thoracic duct | The part of the thoracic duct between the cisterna chyli and the aortic hiatus of the diaphragm. Synonym: pars abdominalis ductus thoracici. (05 Mar 2000) |
| abdominal part of ureter | The part of the ureter between the renal pelvis and the brim of the pelvis. Synonym: pars abdominalis ureteris. (05 Mar 2000) |
| abdominal pool | The volume of blood within the abdomen. (05 Mar 2000) |
| abdominal pregnancy | The implantation and development of the ovum in the peritoneal cavity, usually secondary to an early rupture of a tubal pregnancy; very rarely, primary implantation may occur in the peritoneal cavity. Synonym: abdominocyesis, intraperitoneal pregnancy. (05 Mar 2000) |
| abdominal pressure | Pressure surrounding the bladder; estimated from rectal, gastric, or intraperitoneal pressure. (05 Mar 2000) |
| abdominal pulse | The soft, compressible aortic pulse occurring in certain abdominal disorders. Synonym: pulsus abdominalis. (05 Mar 2000) |
| abdominal reflexes | Contraction of the muscles of the abdominal wall upon stimulation of the skin (superficial a. Reflex's) or tapping neighboring bony structures (deep a. Reflex's). Synonym: supraumbilical reflex. (05 Mar 2000) |
| abdominal regions | The topographical subdivisions of the abdomen; based on subdividing the abdomen by the transpyloric, interspinous and midclavicular planes; including the right and left hypochondriac, right and left lateral, right and left inguinal, and the unpaired epigastric, umbilical and pubic regions. Synonym: regiones abdominis, abdominal zones. (05 Mar 2000) |
| abdominal respiration | Breathing effected mainly by the action of the diaphragm. (05 Mar 2000) |
| abdominal ring | The opening in the transversalis fascia through which the ductus deferens (or round ligament in the female) and gonadal vessels enter the inguinal canal. Located midway between anterior superior iliac spine and pubic tubercle, it is bounded medially by the lateral umbilical ligament (inferior epigastric vessels) and inferiorly by the inguinal ligament. Indirect inguinal hernias exit the abdominal cavity via the deep inguinal ring Synonym: annulus inguinalis profundus, abdominal ring, annulus abdominalis, internal inguinal ring. (05 Mar 2000) |