Dictionary

agenesis Lack of development. For example, agenesis of a toe means the toe failed to form.

Definition Sacral agenesis is a rare congenital condition characterized by the partial or complete absence of the sacral portion of the spine. It falls under the spectrum of caudal regression syndrome (CRS), a disorder affecting the development of the lower spine and adjacent structures. The severity of the condition can vary, ranging from minor sacral…

agenesis of the gallbladder A condition in which the gallbladder fails to develop. It occurs in 1 in about every 1,000 people, usually without additional birth defects.

agent, antihypertensive See antihypertensive.

agent, anti-infective See anti-infective.

Agent Orange An herbicide and defoliant containing 2,4-D and 2,4,5-T, as well as trace amounts of dioxin. Agent Orange was used as a defoliant in the Vietnam War. There has been concern about Agent Orange potentially causing cancer and birth defects.

age-related macular degeneration See macular degeneration.

ageusia An inability to taste sweet, sour, bitter, or salty substances. People who can taste sweet, sour, bitter, or salty substances but have a reduced ability to do so are said to have hypogeusia.

ADLs Activities of daily living.

admitting physician The doctor responsible for admitting a patient to a hospital or other inpatient health facility.

adnexa In gynecology, the appendages of the uterus, namely the ovaries, the Fallopian tubes, and the ligaments that hold the uterus in place.

adrenal gland A small gland located on top of the kidney. The adrenal glands produce hormones that help control heart rate, blood pressure, the way the body uses food, the levels of minerals such as sodium and potassium in the blood, and other functions particularly involved in stress reactions.