Validation of an inexpensive B-mode ultrasound device for detection of deep vein thrombosis

S J Trottier, S Todi, C Veremakis
Chest 1996, 110 (6): 1547-50

OBJECTIVE: To validate a portable, inexpensive, real-time, B-mode ultrasound device compared with duplex ultrasound in the detection of proximal lower extremity deep vein thrombosis in hospitalized patients clinically suspected of having deep vein thrombosis.

DESIGN: Prospective cohort study.

SETTING: Tertiary care community teaching hospital.

PATIENTS: Medical-surgical hospitalized patients undergoing duplex ultrasonography for clinically suspected lower extremity deep vein thrombosis.

INTERVENTIONS: Hospitalized patients who underwent duplex ultrasound examinations were enrolled in the study. Blinded from the duplex ultrasound results, the investigators utilized the study ultrasound device to perform compression ultrasonography of the common femoral, superficial femoral, and popliteal veins within 48 h of the duplex examinations. The results of the study ultrasound device were recorded as normal (compressible) or abnormal (noncompressible).

RESULTS: Of the 198 lower limbs evaluated, duplex ultrasonography documented 34 proximal lower extremity deep vein thrombi. The study ultrasound device detected 32 of the 34 proximal thrombi detected by duplex ultrasonography. One false-positive result of an examination occurred with the study ultrasound device. Compared with duplex ultrasonography, the study ultrasound device had a sensitivity of 94%, specificity of 99%, positive predictive value of 97%, and negative predictive value of 98%.

CONCLUSIONS: The results of this investigation document that the study ultrasound device has an acceptable sensitivity, specificity, and diagnostic accuracy for clinical use in detection of proximal lower extremity deep vein thrombosis. Further evaluation and validation of this ultrasound device are warranted.

Full Text Links

Find Full Text Links for this Article


You are not logged in. Sign Up or Log In to join the discussion.

Trending Papers

Remove bar
Read by QxMD icon Read

Save your favorite articles in one place with a free QxMD account.


Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"