extravasation
Vessel contents escaping
Extravasation is the leakage of fluid from its proper vessel into surrounding tissue.
In medicine, blood extravasates when it escapes from a ruptured vessel, and IV drugs extravasate when they leak from a vein into tissue—sometimes causing serious damage: The chemotherapy extravasation required immediate treatment.
The term extends to any fluid escaping its intended channel, including lava flowing from a volcanic vent.
Slow fluid escape
- oozingLeaking viscously and slowly
- exudationFluid seeping out
- effusionUnrestrained emotional discharge
- dischargeRelease of substance outward
transudation · weeping · percolation · outflow · bleeding · drainage · leaching · filtration
Profuse discharge of blood
- hematomaBlood collected outside vessels
- bleedingBlood loss from injury
- bruisingCausing tissue discoloration
- edemaPathological tissue puffiness
swelling · phlebitis · thrombosis · vein · artery · capillary · vessel · rupture
Into the vein
- chemotherapyAnti-cancer drug treatment
- cannulaThin medical insertion tube
- catheterInserted medical drainage tube
- injectionSyringe-delivered dose
infusion · cytotoxic · vesicant · infiltration · necrosis · blistering · phlebitis · complication
Pathological tissue puffiness
- swellingAbnormal tissue enlargement
- rednessCrimson-hued state
- painBodily or emotional distress
- heatTransferred thermal energy
histamine · exocytosis · leukocyte · neutrophil · cytokine · permeability · vascular · inflammatory
seepage
Slow fluid escape
- oozingLeaking viscously and slowly
- exudationFluid seeping out
- effusionUnrestrained emotional discharge
discharge · transudation · weeping · percolation · outflow · bleeding · drainage · leaching · filtration · emission
hemorrhage
Profuse discharge of blood
- hematomaBlood collected outside vessels
- bleedingBlood loss from injury
- bruisingCausing tissue discoloration
edema · swelling · phlebitis · thrombosis · vein · artery · capillary · vessel · rupture · petechiae
intravenous
Into the vein
- chemotherapyAnti-cancer drug treatment
- cannulaThin medical insertion tube
- catheterInserted medical drainage tube
injection · infusion · cytotoxic · vesicant · infiltration · necrosis · blistering · phlebitis · complication · antidote
edema
Pathological tissue puffiness
heat · histamine · exocytosis · leukocyte · neutrophil · cytokine · permeability · vascular · inflammatory · tissue
magma
Molten rock underground
basalt · intrusion · extrusion · molten · flow · surface · igneous · dike · sill · pluton
extravasationcontainment
Preventing hostile expansion
retention · encapsulation · sequestration · compartmentalization · confinement