Venous Terms

Anticoagulation

Prevent formation of blood clots

Lysis

Disintegration of a cell

Prophylaxis

Attempt to prevent disease

Hypercoagulability

Abnormality of blood coagulation

Venous Insufficiency

Venous valves cannot close properly

Collateral

Alternative pathway when the main pathway is not functional; blood is established through enlargement of minor vessels

Unidirectional

Only moving in one direction

Blood Clot

Mass formed by clumps of blood

Confluence

Joining of two vessels

Fascia (fascial plane)

Sheet of connective tissue that separates muscle and organs

Venous Stasis

Venous blood does not move and circulate normally

Hydrostatic Pressure

Changes in height of the fluid colum introduce the element of gravitational energy; weight of the column of blood extending from heart to where the right atrium is considered 0 pressure as the reference point, to the level where the pressure is being measured

Cardiac Output

Ability of heart to pump blood to arteries

Continuous Wave

Heard without any fluctuation in the signal that is not affected by respiration

Piezoelectric Crystals

Crystals that generate an electric charge when subjected to pressure

Valsava

Taking a deep breath and bearing down as if having a bowel movement

Augmentation

Increased in venous flow due to distal compression

Pulmonary

Relating to or dealing with lungs

Regurgitation

Backflow of blood

Spontaneous Flow

Flow that is clearly heard at all times

Phasic Flow

Occurs when blood moves through the vessels at a variable velocity

Quantitative

Measureable numerical data

Qualitative

Interpretive or descriptive data

Non-Occlusive

State of not being blocked or occluded

Anechoic

Free of visible echoes

Hypoechoic

Fewer internal echoes compared to another object

Echogenic

Produces internal echoes

Asymptomatic

A condition of producing no symptoms

Thrombophlebitis

Inflammation of the vein wall associated with blood clots

Thrombolytic

Medication that dissolves clots in blood vessel

Contraindicated

When the procedure should not be used because it could be harmful to patient