Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «I»:
Interventional: Pertaining to the act of intervening, interfering or interceding with the intent of modifying the outcome. As, for example, an interventional radiologist....
A radiologist who uses image guidance methods to gain access to vessels and organs. Interventional radiologists can treat certain conditions through the skin (percutaneously) that might otherwise require surgery. The technology includes the use of balloons, catheters, mi...
Interventional radiology (IR)
Interventional radiology: Interventional radiologists employ image guidance methods to gain access to the deep interstices of most organs and organ systems. Through a galaxy of techniques, they can treat certain conditions percutaneously (through the skin) that might otherwise require surgery. (Th...
Interventricular foramen: An opening between the lateral and third ventricles in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord.
The four ventricles consist of the two lateral ventricles, the third ventricle and the fourth ventr...
Interventricular septum: The stout wall separating the lower chambers
(the ventricles) of the heart from one another. A hole in the interventricular septum is
termed a ventricular septal defect (VSD)....
Intervertebral disk: A pad of cartilage between two vertebrae that acts as a shock absorber....
Intervertebral foramen: An opening between vertebrae through which nerves leave the spine and extend to other parts of the body. Also called a neural foramen....
Intestinal gas: The complaint referred to as
"intestinal gas" is a common one and the discomfort can be quite significant. Everyone has gas and eliminates it by burping or passing it through the rectum. In many instances people think they have too much gas when in reality they have normal ...
Intestinal obstruction: Blockage of the intestine by
infolding (intussusception), malformation, tumor, digestive problems,
a foreign body, or inflammation. Symptoms can include crampy
abdominal pain, lack of ability to eliminate normal feces, and
eventually shock. On examining the abdomen, the d...
Intestinal parasite: A parasite (an organism that lives in or on and takes
its nourishment from another organism) in the intestinal tract. Intestinal
parasites include both helminths and protozoa. Helminths are worms such as
tapeworms, pinworms, and roundworms. All of these worms can live, but ty...
Intestinal pseudo-obstruction: Symptoms of
intestinal obstruction with no sign of actual physical
obstruction. This condition may be due to problems with the
nerves that control intestinal muscles or other causes.
Treatment depends on the cause....
Intestinal villus: A tiny projection from the surface of the small intestine which helps absorb nutrients and fluids....
Intestine: The long, tubelike organ in the abdomen that completes
the process of digestion. It consists of the small and large intestines. ...
Intestine, large: The tubelike organ that
completes the process of digestion, receiving material from
the small intestine. It has four parts: the cecum (caecum),
the appendix (vermiform appendix), the colon, and the
rectum. Once the products of digestion enter the cecum
through the ileocecal va...
Intestine, small: The tubelike organ that
receives the products of digestion from the stomach. It has
three parts, the duodenum, the jejunum, and the ileum. The
duodenum is rich in glands that produce digestive enzymes,
and also receives bile from the liver. Digested material
moves from the duo...