scholarly journals The Use of Doppler Ultrasound to Diagnose Deep Vein Thrombosis of the Lower Limbs

2021 ◽  
Vol 8 (4) ◽  
pp. 7-13
Author(s):  
Nagla Hussein ◽  
Mohamed Khalid
Keyword(s):  
Deep Vein Thrombosis ◽  
Lower Extremity ◽  
Femoral Vein ◽  
Lower Extremities ◽  
Duplex Ultrasound ◽  
Imaging Method ◽  
Colour Doppler ◽  
Vein Thrombosis ◽  
Age Range ◽  
Deep Vein

In most cases of pulmonary embolism, death occurs as a result of deep vein thrombosis (DVT) of the lower extremities. Therefore, to avoid DVT complications and sequel, DVT must be diagnosed as early as possible and this can be achieved via B-mode and colour Doppler imaging. The present paper seeks to investigate the suitability of the imaging method of ultrasound for lower extremity DVT diagnosis and to explore the outcomes of the use of this method in DVT cases. To this end, the paper undertakes a retrospective descriptive study of 50 cases of ultrasound-based diagnosis of DVT at King Khalid Hospital in the period between January 2019 and August 2020. Half of the cases were subjected to compression, colour, and duplex ultrasound, 14 cases were subjected to compression and duplex ultrasound, and 11 cases were subjected to compression and colour Doppler. The mean age across all cases was 46.2±19.9 years. The majority of cases (56%) were in the age range 22-41 years old (n=28), while 28% of cases were in the age range 42-61 years old (n=14), 6% of cases were in the age range 62-81 years old (n=3), and 10% of cases were in the age range 82-102 years old (n=5). Regarding sex, females accounted for 60% of cases, while males accounted for the rest of 40%. Furthermore, in 90% of cases (n=45), just one lower extremity was affected, whereas in 10% of cases (n=5), both lower extremities were affected. Regarding thrombus location, it was found mostly in the area above the knee, particularly the popliteal vein (34%), common femoral vein (18%), and superficial femoral vein (20%). Moreover, 2% of cases presented thrombus in the calf vein. In 26% of cases, multiple veins were affected. DVT was acute in 76% of cases (n=38) and chronic in 24% of cases (n=12). It is concluded that symptomatic and at-risk cases benefit from the use of ultrasound for DVT diagnosis. The suitability of this method stems from its lack of invasiveness and capability to assess thrombus location, magnitude, and stage.

scholarly journals Acute Deep Vein Thrombosis and Association with Popliteal Fossa (Baker's) Cysts in Patients with Lower Extremity Duplex Ultrasound Examination

Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 9-10
Author(s):  
Danielle Vlazny ◽  
Damon E. Houghton ◽  
Ryan Meverden ◽  
Paul Daniels ◽  
Matthew Bartlett ◽  
...  
Keyword(s):  
Deep Vein Thrombosis ◽  
Lower Extremity ◽  
Sensitivity And Specificity ◽  
Mayo Clinic ◽  
Duplex Ultrasound ◽  
Popliteal Fossa ◽  
Popliteal Vein ◽  
Vein Thrombosis ◽  
Radiology Reports ◽  
Deep Vein

Background: Popliteal fossa cysts (PFCs aka Baker's cysts) are synovial cysts of the knee joint that can be symptomatic or asymptomatic and incidentally identified on ultrasound. Whether PFCs are associated with deep vein thrombosis (DVT) is unknown. Possible mechanisms for an association include direct compression of the popliteal vein, indirect compression on the popliteal vein with leg flexion, adjacent inflammation of the cyst, or relative immobility due to underlying joint disease itself. Methods: Lower extremity venous Duplex ultrasound radiology reports from the inception of electronic archiving through 11/14/2019 were evaluated across the Mayo Clinic Enterprise (Rochester MN, Jacksonville, FL, Scottsdale AZ, and Mayo Clinic Health System) in patients >18 years of age. Natural language processing (NLP) algorithms were created and validated to identify acute DVT (proximal or distal) and PFCs. A random sample of 1,752 ultrasound reports underwent manual review to calculate the sensitivity and specificity of the NLP algorithm. Cases (ultrasounds with acute DVT) were compared to controls (ultrasound without acute DVT) to examine the frequency of PFCs. IRB approval was obtained and patients lacking Minnesota research authorization were excluded. Results: A total of 332,016 lower extremity venous ultrasounds were performed in 223,035 patients; 156,846 unilateral and 175,170 bilateral lower extremities exams. The mean age at ultrasound was 63.3 (SD 16.5) and 54.7% were female. Ultrasound reports were available for analysis starting in 1992 with a significant increase in the number of ultrasounds performed over the study period across the enterprise (Figure 1). Overall, acute DVT was identified in 24,179 (7.3%) of ultrasounds, and PFCs were identified in 32,427 (9.8%) of ultrasounds. The sensitivity and specificity of the NLP algorithm in the full dataset to identify acute DVT was 86.0% and 97.2%, respectfully. The sensitivity and specificity of the NLP algorithm to identify PFCs was 97.8% and 99.5%, respectively. PFCs were present in 9.3% of ultrasounds with acute DVT and 9.8% of ultrasounds without acute DVT (p=0.007), OR 0.94 (95% CI 0.90-0.98). In a multivariate logistic regression model, after adjusting for age and sex, results remained significant (aOR 0.95, 95% CI 0.91-0.995). Comparing ultrasounds before and after 2010, there was a higher percentage of PFCs and acute DVT reported after 2010 (p<0.001 for both). Sensitivity analyses comparing results before or after 2010, by sex, and only in the first ultrasound performed per person, demonstrated similar results. Conclusions: PFCs are negatively associated with the presence of acute DVT on lower extremity venous Duplex ultrasound. This data does not support PFCs as a contributing or causative factor in the development of lower extremity DVT. Figure 1 Disclosures No relevant conflicts of interest to declare.

Does Repeat Duplex Ultrasound for Lower Extremity Deep Vein Thrombosis Influence Patient Management?

2004 ◽  
Vol 38 (6) ◽  
pp. 525-531 ◽  
Author(s):  
Enrico Ascher ◽  
Patrick S. DePippo ◽  
A. Hingorani ◽  
W. Yorkovich ◽  
S. Salles-Cunha
Keyword(s):  
Deep Vein Thrombosis ◽  
Lower Extremity ◽  
Patient Management ◽  
Duplex Ultrasound ◽  
Vein Thrombosis ◽  
Deep Vein

Is Colour Doppler Ultrasound a Sensitive Screening Method in Diagnosing Deep Vein Thrombosis after Hip Surgery ?

1996 ◽  
Vol 75 (02) ◽  
pp. 242-245 ◽  
Author(s):  
Marie Magnusson ◽  
Bengt I Eriksson ◽  
Peter Kãlebo ◽  
Ramon Sivertsson
Keyword(s):  
Deep Vein Thrombosis ◽  
High Risk ◽  
Doppler Ultrasound ◽  
Predictive Value ◽  
Screening Method ◽  
Colour Doppler ◽  
Vein Thrombosis ◽  
Colour Doppler Ultrasound ◽  
Asymptomatic Patients ◽  
Deep Vein

SummaryPatients undergoing orthopedic surgery are at high risk of developing deep vein thrombosis. One hundred and thirty-eight consecutive patients undergoing total hip replacement or hip fracture surgery were included in this study. They were surveilled with colour Doppler ultrasound (CDU) and bilateral ascending contrast phlebography. The prevalence of proximal and distal DVT in this study was 5.8% and 20.3% respectively.CDU has a satisfactory sensitivity in patients with symptomatic deep vein thrombosis, especially in the proximal region. These results could not be confirmed in the present study of asymptomatic patients. The sensitivity was 62.5% (95% confidence interval: C.I. 24-91%) and the specificity 99.6% (C.I. 98-100%) for proximal DVT; 53.6% (C.I. 34-73%) and 98% (C.I. 96-99%) respectively for distal thrombi. The overall sensitivity was 58.1% (C.I. 39-75%) and the specificity 98% (C.I. 96-99%). The positive predictive value was 83.3% (C.I. 36-99%) and 75% (C.I. 51-91%) for proximal and distal DVT respectively. The negative predictive value was 98.9% (C.I. 98-100%) and 94.9% (C.I. 92-98%) for proximal and distal DVT respectively. The results of this study showed that even with a highly specialised and experienced investigator the sensitivity of CDU was too low to make it suitable for screening purposes in a high risk surgical population.

scholarly journals Lower extremity deep vein thrombosis after heavy exertion

2013 ◽  
Vol 2013 (nov18 1) ◽  
pp. bcr2013201488-bcr2013201488
Author(s):  
S. Tak ◽  
S. Tak
Keyword(s):  
Deep Vein Thrombosis ◽  
Lower Extremity ◽  
Vein Thrombosis ◽  
Deep Vein
Sign in / Sign up

Export Citation Format

Share Document