Incidence of deep vein thrombosis through an ultrasound surveillance protocol in patients with COVID-19 pneumonia in non-ICU setting: A multicenter prospective study

Objective The aim of this study was to assess the incidence of deep vein thrombosis (DVT) of the lower limbs, using serial compression ultrasound (CUS) surveillance, in acutely ill patients with COVID-19 pneumonia admitted to a non-ICU setting. Methods Multicenter, prospective study of patients with COVID-19 pneumonia admitted to Internal Medicine units. All patients were screened for DVT of the lower limbs with serial CUS. Anticoagulation was defined as: low dose (enoxaparin 20–40 mg/day or fondaparinux 1.5–2.5 mg/day); intermediate dose (enoxaparin 60–80 mg/day); high dose (enoxaparin 120–160 mg or fondaparinux 5–10 mg/day or oral anticoagulation). The primary end-point of the study was the diagnosis of DVT by CUS. Results Over a two-month period, 227 consecutive patients with moderate-severe COVID-19 pneumonia were enrolled. The incidence of DVT was 13.7% (6.2% proximal, 7.5% distal), mostly asymptomatic. All patients received anticoagulation (enoxaparin 95.6%) at the following doses: low 57.3%, intermediate 22.9%, high 19.8%. Patients with and without DVT had similar characteristics, and no difference in anticoagulant regimen was observed. DVT patients were older (mean 77±9.6 vs 71±13.1 years; p = 0.042) and had higher peak D-dimer levels (5403 vs 1723 ng/mL; p = 0.004). At ROC analysis peak D-dimer level >2000 ng/mL (AUC 0.703; 95% CI 0.572–0.834; p = 0.004) was the most accurate cut-off value able to predict DVT (RR 3.74; 95%CI 1.27–10, p = 0.016). Conclusions The incidence of DVT in acutely ill patients with COVID-19 pneumonia is relevant. A surveillance protocol by serial CUS of the lower limbs is useful to timely identify DVT that would go otherwise largely undetected.

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D-Dimer Test and Diagnosis of Deep Vein Thrombosis: A Comparative Study of 7 Assays

Thrombosis and Haemostasis ◽

10.1055/s-0038-1650615 ◽

1996 ◽

Vol 76 (04) ◽

pp. 518-522 ◽

Cited By ~ 44

Author(s):

A Elias ◽

I Aptel ◽

B Huc ◽

J J Chale ◽

F Nguyen ◽

...

Keyword(s):

Deep Vein Thrombosis ◽

Negative Predictive Value ◽

Predictive Value ◽

Latex Agglutination ◽

Lower Limbs ◽

First Episode ◽

Lower Sensitivity ◽

Vein Thrombosis ◽

Deep Vein ◽

D Dimer

SummaryThe current D-Dimer ELISA methods provide high sensitivity and negative predictive value for the diagnosis of deep vein thrombosis but these methods are not suitable for emergency or for individual determination. We have evaluated the performance of 3 newly available fast D-Dimer assays (Vidas D-Di, BioMerieux; Instant IA D-Di, Stago; Nycocard D-Dimer, Nycomed) in comparison with 3 classic ELISA methods (Stago, Organon, Behring) and a Latex agglutination technique (Stago). One-hundred-and-seventy-one patients suspected of presenting a first episode of deep vein thrombosis were investigated. A deep vein thrombosis was detected in 75 patients (43.8%) by ultrasonic duplex scanning of the lower limbs; in 11 of them the thrombi were distal and very limited in size (<2 cm). We compared the performance of the tests by calculating their sensitivity, specificity, positive and negative predictive value for different cut-off levels and by calculating the area under ROC curves. The concordance of the different methods was evaluated by calculating the kappa coefficient. The performances of the 3 classic ELISA and of the Vidas D-Di were comparable and kappa coefficients indicated a good concordance between the results provided by these assays. Their sensitivity slightly declined for detection of the very small thrombi. Instant IA D-Di had a non-significantly lower sensitivity and negative predictive value than the 4 previous assays; however its performance was excellent for out-patients. As expected, the Latex assay had too low a sensitivity and negative predictive value to be recommended. In our hands, Nycocard D-Dimer also exhibited low sensitivity and negative predictive value, which were significantly improved when the plasma samples were tested by the manufacturer. Thus significant progress has been made, allowing clinical studies to be planned to compare the safety and cost-effectiveness of D-Dimer strategy to those of the conventional methods for the diagnosis of venous thrombosis.

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D-dimer levels in combination with residual venous obstruction and the risk of recurrence after anticoagulation withdrawal for a first idiopathic deep vein thrombosis

Thrombosis and Haemostasis ◽

10.1160/th05-02-0095 ◽

2005 ◽

Vol 94 (11) ◽

pp. 969-974 ◽

Cited By ~ 68

Author(s):

Cristina Legnani ◽

Michela Cini ◽

Giuliana Guazzaloca ◽

Gualtiero Palareti ◽

Benilde Cosmi

Keyword(s):

Deep Vein Thrombosis ◽

Recurrence Rate ◽

Oral Anticoagulant Therapy ◽

Lower Limbs ◽

First Episode ◽

Venous Obstruction ◽

Risk Of Recurrence ◽

Vein Thrombosis ◽

Deep Vein ◽

D Dimer

SummaryWe assessed the predictive value of D-dimer levels in combination with residual venous obstruction (RVO) for recurrent venous thromboembolism (VTE) in a prospective cohort of outpatients after oral anticoagulant therapy (OAT) suspension for a first episode of idiopathic proximal deep vein thrombosis of the lower limbs during a 2-year follow-up. Patients (n=400) were enrolled on the day of OAT suspension when RVO was determined by compression ultrasonography (present in 48.6% of patients). D-dimer (cut-off value: 500 ng/mL) was measured 30±10 days afterwards (abnormal in 56.4% of patients). The overall recurrence rate was 16.7% (67/400; 95% confidence intervals - CI -:13–21%). The multivariate hazard ratio (HR) for recurrence was 3.32 (95% CI:1.78–6.75; p > 0.0001) for abnormal D-dimer compared to normal D-dimer and 1.2 (95% CI:0.72–2.07; p>0.05) for RVO compared to absent RVO. The recurrence rate was 5.7% (95% CI:2–13%) and 10.4% (95% CI:6–18%), respectively, for normal D-dimer either without or with RVO, 22.9% (95% CI:14–33%) and 25.9% (95% CI: 18–35%), respectively, for abnormal D-dimer, either without or with RVO. When compared with normal D-dimer without RVO, the multivariate HR for recurrence was similar for abnormal D-dimer either with RVO (4.76 – 95% CI:1.78–12.8) or without RVO (4.3–95%:1.56–11.88). Abnormal D-dimer at one month after OAT withdrawal is an independent risk factor for recurrent VTE, while RVO at the time of OAT withdrawal, either with normal or abnormal D-dimer after one month, does not influence the risk of recurrence.

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Prevention of subclinical deep vein thrombosis in abdominal surgeries

International Surgery Journal ◽

10.18203/2349-2902.isj20182748 ◽

2018 ◽

Vol 5 (7) ◽

pp. 2475

Author(s):

Tazeem M. D. ◽

Wasim M. D. ◽

Sabia Amin ◽

Tahmida Ali

Keyword(s):

Molecular Weight ◽

Deep Vein Thrombosis ◽

Lower Limb ◽

Low Molecular Weight Heparin ◽

Lower Limbs ◽

Low Molecular Weight ◽

Vein Thrombosis ◽

Group I ◽

Deep Vein ◽

D Dimer

Background: Deep vein thrombosis (DVT) is a common but elusive illness that can result in disability and death if not recognized and treated effectively. The reported incidence has not changed much over past couple of decades. The aim of this study was to identify the risk of deep vein thrombosis related to the number of days of immobility and the role of low molecular weight heparin in the prevention of deep vein thrombosis.Methods: A total of hundred (n=100) patients undergoing laparotomy were studied in the post-operative period between January 2014 and December 2016. Patients were divided into two groups alternatively; Group I patients did not receive any DVT prophylaxis and Group II patients were given low molecular weight heparin once a day till mobilization. From 3rdPOD, all the patients were evaluated with detailed history and lower limb examination. D-dimer study was done in all the patients and if positive then followed by Color Venous Doppler. Regular follow-ups were done weekly once for a month, every two weeks for next month and once a month thereafter, minimum for 6 months.Results: A total of hundred (n=100) patients, including 65 men and 35 women, with median age of 40 years underwent laparotomies in 2 years by a single unit. The incidence of Lower Limb DVT in Group I was 8%. The risk factors associated with DVT were sex, BMI, smoking and Malignancy. The signs and symptoms associated with DVT were swelling of lower limbs, pain and tenderness, fever and Homan’s and Moses signs. The D-dimer test results were positive in 9 patients. Color Venous Doppler identified DVT in 8 patients. On regular follow- ups, remissions of clinical symptoms were recorded and repeat Doppler scans showed recanalization in all the patients after 6 months.Conclusions: Deep Vein Thrombosis is multifactorial, and post-operative patients account for majority of cases. Early mobilization and Prophylactic Low Molecular Heparin prevents DVT in abdominal surgeries.

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D-dimer and residual vein obstruction as risk factors for recurrence during and after anticoagulation withdrawal in patients with a first episode of provoked deep-vein thrombosis

Thrombosis and Haemostasis ◽

10.1160/th10-08-0559 ◽

2011 ◽

Vol 105 (05) ◽

pp. 837-845 ◽

Cited By ~ 36

Author(s):

Cristina Legnani ◽

Michela Cini ◽

Giuliana Guazzaloca ◽

Gualtiero Palareti ◽

Benilde Cosmi

Keyword(s):

Risk Factors ◽

Deep Vein Thrombosis ◽

Recurrence Risk ◽

Lower Limbs ◽

University Hospital ◽

First Episode ◽

Vein Thrombosis ◽

Deep Vein ◽

Residual Vein Obstruction ◽

D Dimer

SummaryD-dimer and residual venous obstruction (RVO) have been separately shown to be risk factors for recurrent venous thromboembolism (VTE) after a first episode of unprovoked proximal deep-vein thrombosis (DVT). It was the objective of this study to assess the predictive value of D-dimer and residual vein obstruction (RVO), alone and in combination, for recurrence after provoked DVT of the lower limbs. A total of 296 consecutive patients with a first episode of symptomatic provoked proximal DVT were evaluated at a university hospital in Bologna, Italy. On the day of anticoagulation withdrawal (T0), RVO was determined by compression ultrasonography. D-dimer levels (cut-off: 500 ng/ml) were measured at T0 and after 30 ±10 days (T1). The main outcome was recurrent VTE during a two-year follow-up. D-dimer was abnormal in 11.6% (32/276) and 31% (85/276) of subjects at T0 and at T1, respectively. RVO was present in 44.8% (132/294) of patients. Recurrence rate was 5.1% (15/296; 95% confidence interval [CI]: 3–8%; 3% patient-years; 95% CI: 2–5 %). An abnormal D-dimer either at T0 or at T1 was associated with an adjusted hazard ratio (HR) for recurrence of 4.2 (95% CI:1.2–14.2; p=0.02) and 3.8 (95%CI: 1.2–12.1; p=0.02), respectively, when compared with normal D-dimer. The HR for recurrence associated with RVO was not significant, and RVO did not increase the recurrence risk associated with an abnormal D-dimer either at T0 or T1. In conclusion, an abnormal D-dimer during vitamin K antagonist (VKA) treatment or at one month after VKA withdrawal is a risk factor for recurrence in patients with provoked DVT, while RVO at the time of anticoagulation withdrawal is not.

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Incidence of Lower Limbs Deep Vein Thrombosis After Open and Laparoscopic Gastric Bypass: A Prospective Study

Obesity Surgery ◽

10.1007/s11695-007-9268-y ◽

2007 ◽

Vol 18 (1) ◽

pp. 52-57 ◽

Cited By ~ 26

Author(s):

Aldo L. Brasileiro ◽

Fausto Miranda ◽

João E. M. T. M. Ettinger ◽

Aldemar A. Castro ◽

Guilherme B. B. Pitta ◽

...

Keyword(s):

Gastric Bypass ◽

Deep Vein Thrombosis ◽

Prospective Study ◽

Laparoscopic Gastric Bypass ◽

Lower Limbs ◽

Vein Thrombosis ◽

A Prospective Study ◽

Deep Vein

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Unusual deep vein thrombosis sites: magnetic resonance venography in patients with negative compression ultrasound and symptomatic pulmonary embolism

Phlebology The Journal of Venous Disease ◽

10.1258/phleb.2012.012054 ◽

2012 ◽

Vol 29 (1) ◽

pp. 25-29 ◽

Cited By ~ 2

Author(s):

T Gary ◽

K Steidl ◽

K Belaj ◽

F Hafner ◽

H Froehlich ◽

...

Keyword(s):

Pulmonary Embolism ◽

Risk Factor ◽

Deep Vein Thrombosis ◽

Magnetic Resonance ◽

Venous Thrombosis ◽

Lower Limbs ◽

Mr Venography ◽

Vein Thrombosis ◽

Compression Ultrasound ◽

Deep Vein

Objectives To evaluate the clinical characteristics of patients with pulmonary embolism (PE), negative compression ultrasound (CUS) of the lower limbs and detection of unusual deep vein thrombosis (DVT) sites by means of magnetic resonance (MR) venography. Methods A retrospective data analysis of PE patients hospitalized at our institution from April 2009 to 2011. Results From April 2009 to 2011, a total of 762 PE patients were treated at our institution. In 169 of these patients CUS for DVT was negative. In these patients MR venography was performed for further evaluation. We found venous thrombosis at unusual sites in 12 of these patients. Due to free floating thrombus masses and fear of life-threatening PE progression we inserted an inferior vena cava filter in three of these 12 patients. The leading venous thromboembolism risk factor in our patients was immobilization (5 patients, 41.7%). Conclusions We conclude that especially in patients with PE and negative CUS of the lower limbs a thrombosis of the pelvic veins should be considered in case of symptoms for venous thrombosis in this area. Further diagnostic work-up with MR venography should be scheduled in these patients especially in patients with risk factor immobilization as therapeutic consequences might occur.

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Comparison of Real-Time B-Mode Ultrasonography and Doppler Ultrasound with Contrast Venography in the Diagnosis of Venous Thrombosis in Symptomatic Outpatients

Thrombosis and Haemostasis ◽

10.1055/s-0038-1649594 ◽

1993 ◽

Vol 70 (03) ◽

pp. 404-407 ◽

Cited By ~ 34

Author(s):

Alberto Cogo ◽

Anthonie W A Lensing ◽

Paolo Prandoni ◽

Harry R Büller ◽

Antonio Girolami ◽

...

Keyword(s):

Deep Vein Thrombosis ◽

Prospective Study ◽

Real Time ◽

Doppler Ultrasound ◽

Lower Limbs ◽

Vein Thrombosis ◽

Doppler Us ◽

A Prospective Study ◽

Deep Vein ◽

Calf Vein

SummaryIn a prospective study, we compared real-time B-mode ultrasonography, using the simple criteria of common femoral and popliteal vein compressibility (Compression US), and Doppler ultrasound, using a standardized technique (Doppler US), with contrast venography in 158 consecutive outpatients symptomatic for deep-vein thrombosis of the lower limbs (DVT). For proximal vein thrombosis, the sensitivities documented for Compression US and Doppler US were 100% (95% CI: 90% to 100%) and 89% (95% CI: 76% to 96%), respectively. This difference is not statistically significant (p = 0.056). For all thrombi (including isolated calf-vein thrombosis), however, the sensitivity of Compression US was significantly higher than that of Doppler US (95% and 76%, respectively; p <0.04). Compression US was normal in all patients with normal venogram (specificity, 100%; 95% CI: 95% to 100%), while Doppler US was abnormal in two patients with normal venogram (specificity, 98%; 95% CI: 92% to 100%). The specificities of the two tests did not differ significantly. The results of our comparison suggest that Compression US is superior to Doppler US in the detection of DVT in symptomatic outpatients.

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The value of D-dimer, ESR and CRP in the Diagnosis of Deep Vein Thrombosis of Lower Limbs After Hip and Knee Joint Replacement

10.21203/rs.3.rs-171633/v1 ◽

2021 ◽

Author(s):

Xinchao Fan ◽

Kai Zhang ◽

Xilong Sun ◽

Xiangrui Duan ◽

Dadi Wan ◽

...

Keyword(s):

Deep Vein Thrombosis ◽

Lower Extremity ◽

Prothrombin Time ◽

Knee Replacement ◽

Area Under The Curve ◽

Diagnostic Value ◽

Lower Limbs ◽

Vein Thrombosis ◽

Deep Vein ◽

D Dimer

Abstract Objective: To investigate the diagnostic value of D-dimer, ESR and CRP in deep vein thrombosis (DVT) of lower extremity after hip and knee replacement.Methods: Clinical data of 216 patients who underwent hip and knee replacement in our hospital from January 2018 to November 2020 were retrospectively analyzed. Among them, there were 86 patients with lower extremity deep vein thrombosis and 130 patients without lower extremity deep vein thrombosis. Preoperative blood D-dimer, prothrombin time, fibrinogen content, erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), albumin and hemoglobin levels were collected. Chi-square test was used to compare the rate of deep vein thrombosis in lower limbs. The PSM propensity score matching method was used to select 86 patients from 130 patients without lower extremity deep vein thrombosis (DVT) as control group. The levels of D-dimer, albumin and hemoglobin in 172 patients were compared, and the diagnostic efficacy of D-dimer, ESR and CRP in the diagnosis of lower extremity deep vein thrombosis after hip and knee replacement was analyzed by ROC curve.Results: ROC curve analysis results showed that: The optimal cut-off values of D-dimer, prothrombin time, ESR, CRP and age for the diagnosis of DVT of lower extremity after hip replacement were 1.745mg/L, 10.850s, 15.500mm/h, 2.375mg/L and 72 years old, respectively. The sensitivity was 71.8%, 66.7%, 61.5%, 94.9%, 71.8%, the specificity was 74.1%, 66.7%, 70.4%, 33.3%, 100%, and the area under the curve was 0.746, 0.683, 0.658, 0.651, 0.869. The optimal truncation value of D-dimer for the diagnosis of DVT of lower extremity after knee replacement was 0.285mg/L, the sensitivity was 78.7%, the specificity was 44.1%, and the area under the curve was 0.622.Conclusion: The diagnostic value of D-dimer in the formation of lower extremity DVT after knee arthroplasty is higher than that after hip arthroplasty, but the diagnostic value of prothrombin time, ESR, CRP and age in the formation of lower extremity DVT after hip arthroplasty is higher than that after knee arthroplasty.

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Qualitative D-Dimer in deep vein thrombosis: A single center prospective study from Kashmir India

Annals of Tropical Medicine and Public Health ◽

10.4103/1755-6783.105121 ◽

2012 ◽

Vol 5 (5) ◽

pp. 411

Author(s):

DavinderPal Singh ◽

Fayaz Sofi ◽

BavneetKour Bali ◽

GhulamNabi Dhobi ◽

Muzafar Naik ◽

...

Keyword(s):

Deep Vein Thrombosis ◽

Prospective Study ◽

Single Center ◽

Vein Thrombosis ◽

Deep Vein ◽

D Dimer

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D-Dimers, Thrombin Antithrombin III Complexes and Prothrombin Fragments 1 + 2: Diagnostic value in Clinically Suspected Deep Vein Thrombosis

Thrombosis and Haemostasis ◽

10.1055/s-0038-1647449 ◽

1991 ◽

Vol 65 (01) ◽

pp. 028-032 ◽

Cited By ~ 105

Author(s):

B Boneu ◽

G Bes ◽

H Pelzer ◽

P Sié ◽

H Boccalon

Keyword(s):

Deep Vein Thrombosis ◽

Antithrombin Iii ◽

High Sensitivity ◽

Diagnostic Value ◽

Predictive Values ◽

Vein Thrombosis ◽

High Negative Predictive Value ◽

Deep Vein ◽

D Dimer ◽

Mercury Strain Gauge

SummaryThis study was performed to determine the accuracy of D-Dimer fibrin derivatives, thrombin-antithrombin III (TAT) complexes and prothrombin fragments 1 + 2 (F 1 + 2) determinations for the diagnosis of deep vein thrombosis (DVT). One hundred and sixteen consecutive patients referred to the angiology unit of our hospital for a clinically suspected DVT were investigated. They were submitted to mercury strain gauge plethysmography and to ultrasonic duplex scanning examination; in cases of inconclusive results or of proximal DVT (n = 35), an ascending phlebography was performed. After these investigations were completed, the diagnosis of DVT was confirmed in 34 and excluded in 82. One half of the patients were already under anticoagulant therapy at the time of investigation. The 3 biological markers were assayed using commercially available ELISA techniques and the D-Dimer was also assayed with a fast latex method. The normal distribution of these markers was established in 40 healthy blood donors. The most accurate assay for the diagnosis of DVT was the D-Dimer ELISA which had both a high sensitivity (94%) and a high negative predictive value (95%). The D-Dirner latex, TAT complexes and F 1 + 2 were far less sensitive and provided negative predictive values which ranged between 78 and 85%. In spite of positive and significant correlations between the levels of ihe 3 markers, their association did not improve their overall accuracy for detecting D\/L Therefore, with the exception of the D-Dimer ELISA, these markers were of little value for the diagnosis of DVT in this specific population.

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