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acute myelocytic leukemia.


(am-lō′dĭ-pēn″) A calcium channel blocker and antihypertensive, administered orally to control high blood pressure, angina pectoris, and variant angina.


Advanced medical life support.


(am′mēt-ĕr) [am(pere) + -meter] An instrument, calibrated in amperes, that measures the quantity (number of electrons) in an electric current. SEE: milliammeter.

Ammi visnaga

(am′ē vis-nag′ă) A perennial herb with a taproot, related to Queen Anne's lace, used in traditional Egyptian medicine as a diuretic and treatment for kidney stones. It is also used as a coronary vasodilator but is poorly tolerated when given orally. Compounds developed from its furan ring include amiodarone (an antiarrhythmic drug).


(ă-mōn′yă) [L. sal ammoniacum, ult. fr. Ammon, Egyptian deity near whose temple it was originally obtained] An alkaline gas, NH3, formed by decomposition of nitrogen-containing substances such as proteins and amino acids. Ammonia is converted into urea in the liver. It is related to many poisonous substances but also to the proteins and many useful chemicals. Dissolved in water, it neutralizes acids and turns litmus paper blue.

blood a. SEE: ammoniemia.


(am″ŏ-nī′ă-kăl) Pert. to or having the characteristics of ammonia.


(ă-mō′nē-āt″ĕd) Containing ammonia.

ammoniemia, ammonemia

(ă -mō″nēē′mē-ă, ă-mō-nē′mē-ă) [ammonia + -emia] Excessive ammonia in the blood. Normally, only faint traces of ammonia are found in the blood. Increased amounts are due to a pathological condition such as impaired liver function.


(am-nē′zhă) [Gr. amnēsia, amnēstia, oblivion, forgetfulness] Loss of memory, whether partial, total, permanent, or transient. The term is often applied to episodes during which patients forget recent events although they may conduct themselves appropriately, and after which no memory of the period persists. Such episodes are often caused by strokes, seizures, trauma, senility, alcoholism, or intoxication. The cause is often unknown.

anterograde a. Amnesia for events that occurred after a precipitating event or medication.

image Short-term memory loss may be induced in people who use benzodiazepine drugs (such as triazolam, lorazepam, or flurazepam).

SYN: anterograde memory; anterograde memory loss.

dissociative a. Amnesia for important personal information, usually of a traumatic or stressful nature, that is too extensive to be explained by ordinary forgetfulness. SYN: psychogenic amnesia.

post-traumatic a. ABBR: PTA. Amnesia, agitation, and confusion affecting a patient with traumatic brain injury (TBI) soon after the injury or on awakening from coma. Edema, hemorrhage, contusions, shearing of axons, and ...

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