Category: R

Combined epithelial layers of the enamel organ, which form a protective layer over the enamel crown as it erupts and then become the primary epithelial attachment surrounding the tooth.  

A mixture of dextro and levo-isomers of epinephrine that, when nebulized, can be used in the treatment of croup and bronchiolitis. The drug is usually given with parenteral dexamethasone.  

A seizure disorder that cannot be controlled with two anticonvulsant drugs. Refractory epilepsy is found in about a third of all patients who have seizures.  

Recurrent epileptic seizures that occur in reaction to a specific stimulus, such as photic stimulation while looking at flashing lights or television, auditory stimulation while listening to specific musical compositions, tactile stimulation, or reading.  

An enzyme, such as a cytochrome or a flavoprotein, that acts within tissue cells to catalyze oxidative reactions by releasing energy.  

An enzyme that catalyzes oxidation-reduction reactions.  

An enema that may be used to provide nourishment, medication, or anesthetic. It should be made from fluids that will not stimulate peristalsis. A small amount of solution (e.g., 100 to 250 ml) typically is used in adults.  

Endocarditis affecting the tricuspid or pulmonary valve. It is usually the result of a percutaneous infection and is most often seen in injection drug users.  

Valvular inflammation and dysfunction (especially mitral insufficiency) occurring during acute rheumatic fever.  

Encephalitis due to a tick-borne virus. Humans may also contract it by drinking goat milk.