Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «D»:
Deviated septum: A condition in which the nasal septum (the thin wall that separates the air passages on either side of the nose) is displaced to
one or the other side of the face. A deviated septum most commonly arises after trauma or injury to the nose. Symptoms can include obstruction of air
Deviation of the nasal septum
Deviation of the nasal septum: Failure of the nasal septum to be in the center where it is supposed to be. (The nasal septum is the wall inside the nose that runs down the middle dividing it into two sides.)
Deviation of the nasal septum may be congenital (present at birth) or occur later from trau...
Device, assistive: Any device that is designed, made,
and/or adapted to assist a person to perform a particular task. For examples, canes,
crutches, walkers, wheel chairs, and shower chairs are all assistive devices. Device,
intrauterine contraceptive (IUD): A device inserted into the uterus (womb) ...
Device, medical: See: Medical device....
DEXA: Dual energy X-ray absorptometry. See: DXA....
Dexfenfluramine: A weight loss drug, in a class of
drugs called anorectics which decrease appetite. This drug, sold in the US under the brand name Redux, was withdrawn from the US market in 1997, and has since been withdrawn worldwide and is no longer available because of its association with abnor...
Dextro-: Prefix derived from the Latin dexter meaning "on the right side." A molecule that shows dextrorotation is turning or twisting to the right. The opposition of dextro- is levo-....
Dextrocardia: The heart is reversed and is in the right
side of the chest rather than in its normal location on the left. This is a true anatomic
reversal. With dextrocardia, for example, the apex (tip) of the heart points to the right
rather than (as is normal) to the left. Dextrocardia occurs in a...
Dextromethorphan: An oral cough suppressant available in the US without a prescription but which is sometimes abused as a recreational drug. Dextromethorphan (DXM) is chemically related to codeine and acts on the brain to suppress cough, but it does not have the pain relieving and addictive properti...
Dextroposition: Move to the right....
Dextroposition of the heart
Dextroposition of the heart: The heart is displaced to
the right (from its usual location in the left chest). There is no anatomic alteration in
the heart itself, just in its location. Dextroposition occurs when the contents of the
left side of the chest shove the heart to the right or when the cont...
Dextrose: Better known today as glucose, this
sugar is the chief source of
energy in the body. Glucose is chemically considered a
simple sugar. It is
the main sugar that the body manufactures. The body makes
glucose from all
three elements of food, protein, fat and carbohydrates,
but in larges...
DFSP: Dermatofibrosarcoma protuberans....
DGS: See: DiGeorge syndrome....
DHA: 1. Docosahexaenoic acid, an essential fatty acid, thought to be important to the development of infants, particularly as regards their eyes and brain. DHA is present in breast milk and has been added to some infant formulas. Postnatal DHA may improve vision and some cognitive functions in infan...