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[Venous Doppler echography in acute pulmonary embolism]
1Service de Cardiologie, CHU de La Timone, Marseille.
Presse Medicale (Paris, France : 1983)
|October 5, 1991
Summary
Ultrasonic duplex scanning is a reliable method for detecting deep vein thrombosis, offering precise localization and assessment of obstruction. This non-invasive technique aids in diagnosing venous thromboembolism when performed by trained specialists.
Area of Science:
- Vascular Medicine
- Diagnostic Imaging
Background:
- Clinical signs of venous thrombosis are often late, insensitive, and non-specific for diagnosing pulmonary embolism.
- Objective tests are crucial for detecting deep vein thrombosis (DVT).
Purpose of the Study:
- To evaluate the diagnostic efficacy of ultrasonography, particularly ultrasonic duplex scanning, for detecting venous thrombosis.
- To compare ultrasonography with other diagnostic methods like phlebography.
Main Methods:
- Anatomical tests: Phlebography and ultrasonography (including Doppler velocimetry).
- Hemodynamic tests: Doppler and plethysmography.
- Ultrasonic duplex scanning was assessed for reliability, localization accuracy, and ability to characterize thrombus extent and obstruction.
Main Results:
- Ultrasonic duplex scanning is highly reliable and competitive with phlebography for diagnosing and localizing venous thrombosis.
- Ultrasonography accurately identifies thrombosis regardless of site, extent, or degree of obstruction.
- Indirect hemodynamic tests are less reliable for distal or non-occlusive thrombi compared to phlebography and ultrasonography.
Conclusions:
- Ultrasonic duplex scanning, when performed by a trained specialist with appropriate equipment and Doppler examination, is a valuable tool for diagnosing venous thromboembolism.
- While ultrasonography can detect venous thromboembolism, negative results do not entirely exclude the diagnosis, similar to phlebography.