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(in-hib′ĭ-tōr″ē) [L. inhibere, to hold back, restrain] Restraining, preventing.

inhibitory control

In psychology and psychiatry, the ability to resist urges and instead to do or say only those things that are culturally, politically, or socially appropriate.

inhibitory control test

ABBR: ICT. A test of a person’s ability to override a habitual or learned response to a stimulus, i.e., to inhibit a response and substitute a new one to achieve a different purpose. ICTs have been used to assess the severity of learning disorders in school achievement, attention deficit disorder, mild encephalopathies, schizophrenia, and traumatic brain injury.


(in′ē-on″) [Gr. inion, the nape, back of the neck] The center of the external occipital protuberance. iniac, inial (in″ē-ak″, in″ē-ăl), adj.


(ĭn-ĭsh′ăl) [L. initium, beginning] Relating to the beginning or commencement of a thing or process.

initiated cycle

SEE: under cycle.


[L. injicere, to throw in] To introduce fluid into the body or its parts artificially.


(ĭn-jĕk′tă-bl) Capable of being injected.


(ĭn-jĕkt′ĕd) [L. injectus, thrown in] 1. Filled by injection of fluid. 2. Congested.


(in-jek′shŏn) 1. The forcing of a fluid into a vessel, tissue, or cavity.

PATIENT CARE: All supplies used in preparing and administering an injection should be sterile. The caregiver chooses the appropriate syringe size for the volume of fluid to be injected, the appropriate needle gauge for the type of fluid, and the appropriate needle length for the route and site of the administration, considering the amount of muscle and adipose tissue, mobility limitations, and other site-related factors. Hands should be thoroughly cleansed before and after the procedure, and gloves worn if preparing a chemotherapeutic agent. The prescribed dose is accurately measured. An appropriate site is identified by using anatomical landmarks; the area is cleansed with an antiseptic swab (from the center outward), and time is allowed for the antiseptic to evaporate. The needle is inserted at the appropriate angle along the prescribed route. Intradermal injections use a short, fine needle with the opening faced upward; the needle is placed nearly parallel to the surface of the skin and advanced far enough for the injected fluid to make a small bubble under the skin, then carefully removed; pressure that could cause the fluid to leak out onto the skin surface should be avoided. Subcutaneous injections should consist of no more than 1 ml. A short needle should be inserted at a 45° angle, without aspiration, and gentle pressure or no pressure applied to the site after ...

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