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Extravasation

   Also found in: Dictionary/thesaurus, Medical, Legal, Wikipedia 0.01 sec.
extravasation [ik‚strav·ə′sā·shən]
(geology)
The eruption of lava from a vent in the earth.
(medicine)
The pouring out or eruption of a body fluid from its proper channel or vessel into the surrounding tissue.

Extravasation 

the accumulation of blood that has flowed out of the blood vessels into the body cavities or surrounding tissues.

Extravasation may occur when the walls of the vessels are destroyed by a mechanical injury or a pathological process (for example, tumor). It may also occur through an uninjured wall, when the permeability of the wall is increased (for example, under the influence of certain chemical substances). The discharged blood may either permeate the tissues affected by the extravasation or form a circumscribed accumulation, called a hematoma. The significance of extravasation is determined by dimensions, rapidity of development, and site of formation. When the process is minor it is resorbed without treatment. If encapsulated or suppurative, it often requires special treatment. Because extravasation may lead to the destruction of tissue, it is especially dangerous in the brain (insult).



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However, according to Lisa Schulmeister, RN, MN, APRN-BC, OCN[R], FAAN, "Researchers in Australia found that the extravasation rate of vincristine minibag infusions was infrequent and similar to the extravasation rate when syringes were used.
95 Paperback RD119 Aimed at junior doctors new to plastic surgery, this guide proffers advice primarily on the immediate management of emergency hand trauma and covers local anesthetic blocks, nail-bed injuries, mallet finger, nerve injuries, tendon injuries, hand fractures, crush injuries, replants and revascularizations, penetrating foreign bodies, extravasation injuries, high-pressure injection injuries, and deliberate self-harm.
MEDRAD recently introduced the XDS Extravasation Detector, an accessory that works with the Stellant CT Injection System.
 
 
 
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