Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «P»:
Perforation of appendix
Perforation of appendix: Rupture of appendix....
Perforation, nasal septum
Perforation, nasal septum: A hole in the nasal septum, the wall inside the nose that runs down the middle dividing it into two sides. The hole provides a direct communication between the two normally-separate sides of the nose.
Perforation of the nasal septum can be due to trauma (such as a blow...
Perfusion: A chemotherapy technique that may be used when
melanoma occurs on an arm or leg. The flow of blood to and from the limb is stopped for a
while with a tourniquet, and anticancer drugs are put directly into the blood of the limb.
This allows the patient to receive a high dose of drugs in t...
Peri-: Prefix meaning around or about. For
example, pericardial is around the heart, and periaortic
lymph nodes are lymph nodes around the aorta....
Peri-appendiceal: See: Periappendiceal....
Perianal: Located around the anus, the opening of
the rectum to the outside
the body. Peri- is a prefix borrowed from the Greek. It
means "around or
about." So pericardial is around the heart. Perinatal is
around birth. And
periumbilical is around the umbilicus (the belly button).
Peri- is a ...
Perianal abscess: An abscess next to the anus that causes tenderness, swelling, and pain on defecation....
Periaortic: Around the aorta. The aorta is the
great artery that comes from
the left ventricle of the heart and delivers oxygen-rich
blood to the body.
Peri- is a prefix borrowed from the Greek. It means "around
or about." So
perianal is around the anus. For example; pericardial is around the
Periappendiceal: Near the appendix. Perforation of the appendix can lead to a periappendiceal abscess (a collection of pus near the appendix)....
Pericardial: Referring to the pericardium, the sac of fibrous tissue that
surrounds the heart. The inner surface of the pericardium
is lined by a layer of flat cells (mesothelial cells). The pericardial sac
normally contains a
small amount of fluid which acts as a lubricant to allow
Pericardial effusion: Too much fluid within the pericardium, the fibrous sac that surrounds the heart. The pericardium normally contains a small amount of pale yellow fluid which acts as a lubricant, allowing the heart to move within the chest....
Pericardial sac: A conical sac of fibrous tissue which surrounds the heart and the roots of the great blood vessels. Also called the pericardium.
The pericardium has outer and inner coats. The outer
coat is tough and thickened, loosely cloaks the heart, and is attached to the
central part of the d...
Pericardial tamponade: A life-threatening
situation in which there is such a
large amount of fluid (usually blood) inside the
pericardial sac around the
heart that it interferes with the performance of the heart.
The end result,
untreated, is low blood pressure, shock and death. The
Pericarditis: Inflammation of the lining around the heart (the pericardium) causing chest pain and accumulation of fluid around the heart (pericardial effusion). ...
Pericardium: The conical sac of fibrous tissue that
surrounds the heart and the roots of the great blood vessels. The
pericardium's outer coat (the parietal pericardium) is tough and
thickened, loosely cloaks the heart, and is attached to the central
part of the diaphragm and the back of the bre...