DVT ULTRASOUND EXAM QUESTIONS WITH CORRECT ANSWERS
Causes of a DVT - Answers Venous stasis
Vascular injury
Hypercoagulability
Risk Factor for DVT - Answers > 60
Cancer
Recent surgery (esp orthopedic)
pregnancy
smoking
trauma
Birth control/hormone replacement
DVT Exam - Answers Use 2 point compression exam focusing on the common femoral vein
confluence and the popliteal view
96% specificity and sensitivty
Must repeat test in 5-7d of first exam
Do not use DVT exam on someone who _____ - Answers is unreliable, has altered anatomy from
a bypass or vessel harvesting, or if there is very high suspicion for calf vein DVT or pelvic DVT
Ultrasound signs of DVT - Answers Direct visualization
Lack of compression
Lack of respiratory variation
Lack of augmentation
Linear probe - Answers Best for superficial structures
Higher frequency probe
Creates high resolution images
Best used for vascular imaging and line placement
Compression ultrasound - Answers Cross section
Causes of a DVT - Answers Venous stasis
Vascular injury
Hypercoagulability
Risk Factor for DVT - Answers > 60
Cancer
Recent surgery (esp orthopedic)
pregnancy
smoking
trauma
Birth control/hormone replacement
DVT Exam - Answers Use 2 point compression exam focusing on the common femoral vein
confluence and the popliteal view
96% specificity and sensitivty
Must repeat test in 5-7d of first exam
Do not use DVT exam on someone who _____ - Answers is unreliable, has altered anatomy from
a bypass or vessel harvesting, or if there is very high suspicion for calf vein DVT or pelvic DVT
Ultrasound signs of DVT - Answers Direct visualization
Lack of compression
Lack of respiratory variation
Lack of augmentation
Linear probe - Answers Best for superficial structures
Higher frequency probe
Creates high resolution images
Best used for vascular imaging and line placement
Compression ultrasound - Answers Cross section
