Indications:
Suspected DVT
Follow-up examination to evaluate propagation of venous thrombus
Source evaluation for known or suspected PE
Chronic venous insufficiency
Swollen or painful leg
Strengths:
Noninvasive
Fast
Can be repeated serially
Readily available
Inexpensive
Can be performed at bedside
No ionizing radiation
Weaknesses:
Poor visualization of pelvic and calf veins
Negative test does not conclusively “rule out” DVT at presentation; repeat examination after 5 to 7 days may be necessary to exclude clinically suspected thrombosis in symptomatic patients
Operator dependent; results may be affected by skill of technician
Comments:
Venous Doppler is the initial test of choice in suspected DVT.