Prognostic value of D-dimer in patients with pulmonary embolism with and without deep vein thrombosis

2018 ◽  
Vol 36 (6) ◽  
pp. 1099-1100
Author(s):  
Cem Çil ◽  
Oğuzhan Çelik ◽  
Bülent Özlek ◽  
Eda Özlek ◽  
Murat Biteker ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Deep Vein Thrombosis ◽  
Prognostic Value ◽  
Vein Thrombosis ◽  
Deep Vein ◽  
D Dimer

scholarly journals THE ASSOCIATION BETWEEN D-DIMER AND DEEP VEIN THROMBOSIS LOCATION AND ITS ABILITY TO PREDICT PULMONARY EMBOLISM, a retrospective pilot study

2019 ◽  
Author(s):  
Sarah Ali Althomali ◽  
Adel S. Alghamdi ◽  
Tareef H. Gnoot ◽  
Mohammad A. Alhassan ◽  
Abdullatif H. Ajaimi ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Deep Vein Thrombosis ◽  
Risk Group ◽  
Great Role ◽  
Vein Thrombosis ◽  
Increased Risk ◽  
Risk Patients ◽  
Deep Vein ◽  
Limb Deep Vein Thrombosis ◽  
D Dimer

Abstract Background In lower limb deep vein thrombosis; it is important to identify proximal from distal deep vein thrombosis as it carries the highest risk of pulmonary embolism. It is known that D-dimer has a great role in deep vein thrombosis diagnosis. Yet, the use of D-dimer to predict the location of deep vein thrombosis and the risk of pulmonary embolism in deep vein thrombosis patients has not been investigated before. Objective To address the correlation between D-dimer and the location of deep vein thrombosis and to study the efficacy of D-dimer to predict risk of PE in patients with proximal or extensive deep vein thrombosis. Method We included 110 consecutive patients who were hospitalized with the diagnosis of deep vein thrombosis, with or without a concomitant diagnosis of PE, and with D-dimer measured at initial presentation. We categorized the location of deep vein thrombosis as: distal, proximal, and extensive. In the analysis, patients were grouped into high-risk (patients with Proximal or Extensive deep vein thrombosis and pulmonary embolism) and low risk group (patients without pulmonary embolism). Results There was no significant association between D-dimer level and the location of deep vein thrombosis (p=0.519). However, D-dimer level was greater among patients with pulmonary embolism (9.6mg/L) than among patients without pulmonary embolism (7.4mg/L), (p=0.027). D-dimer was a significant predictor of pulmonary embolism as patients with proximal or extensive deep vein thrombosis had 8-folds increased risk of pulmonary embolism than patients with D-dimer less than 4.75mg/L (OR=7.9, p=0.013). Conclusion Though D-dimer was not significantly associated with the location of deep vein thrombosis, it was a significant predictor of pulmonary embolism in patients hospitalized with proximal or extensive deep vein thrombosis.

Case 16: Use of D-dimer assay in suspected deep vein thrombosis or pulmonary embolism

1999 ◽  
Vol 56 (9) ◽  
pp. 529-532
Author(s):  
Caliezi ◽  
Holtz ◽  
Wuillemin
Keyword(s):  
Pulmonary Embolism ◽  
Deep Vein Thrombosis ◽  
Venöse Thromboembolie ◽  
Monoklonaler Antikörper ◽  
Vein Thrombosis ◽  
Deep Vein ◽  
D Dimer

D-Dimere sind Abbauprodukte des quervernetzten Fibrins nach fibrinolytischer Spaltung durch Plasmin. D-Dimere können im Plasma oder im Vollblut mittels gegen Epitope des D-Dimers gerichteter monoklonaler Antikörper nachgewiesen werden. Erhöhte D-Dimer-Werte finden sich bei Patienten mit tiefer Venenthrombose (TVT) oder Lungenembolie (LE), aber auch z.B. bei Patienten mit Infektionen, malignen Tumoren oder Herzinsuffizienz. Die Bestimmung der D-Dimere hat sich als früher Abklärungsschritt in der Diagnostik venöser Thromboembolien (TVT/LE) etabliert. Die hohe Sensitivität verschiedener ELISA-Teste ermöglicht es, die Diagnose einer TVT oder LE zuverlässig auszuschließen, falls die Konzentration der D-Dimere unterhalb einer kritischen Schwelle (sog. cut-off) liegt. Bei ambulanten Patienten gelingt es so, in rund 30% der Fälle mit Hilfe eines gut validierten Testes eine venöse Thromboembolie auszuschließen und auf weitere diesbezügliche Untersuchungen zu verzichten.

Risk Assessment Model to Predict Recurrence in Patients with Unprovoked Deep Vein Thrombosis or Pulmonary Embolism.

Blood ◽  
2009 ◽  
Vol 114 (22) ◽  
pp. 452-452
Author(s):  
Sabine Eichinger ◽  
Georg Heinze ◽  
Paul Alexander Kyrle
Keyword(s):  
Risk Assessment ◽  
Pulmonary Embolism ◽  
Deep Vein Thrombosis ◽  
Recurrence Risk ◽  
Assessment Model ◽  
Risk Scores ◽  
Risk Assessment Model ◽  
Vein Thrombosis ◽  
Deep Vein ◽  
D Dimer

Abstract Abstract 452 Background: Venous thrombosis is a chronic and potentially fatal disease (case fatality 5-9%). Predicting the likelihood of recurrence is important, as most recurrences can be prevented by antithrombotic therapy, albeit at the price of an increased bleeding risk during anticoagulation. Despite a substantial progress in identifying the determinants of the recurrence risk, predicting recurrence in an individual patient is often not feasible. Venous thromboembolism (VTE) is a multicausal disease and the combined effect of clinical and laboratory factors on the recurrence risk is unknown. It was the aim of our study to develop a simple risk model that improves prediction of the recurrence risk in patients with unprovoked VTE. Methods and Findings: In a prospective multicenter cohort study we followed 929 patients with a first VTE after completion of at least 3 months of anticoagulation. The median observation time was 43.3 months. Patients with VTE provoked by surgery, trauma, cancer, pregnancy or oral contraceptive intake were excluded as were those with a natural inhibitor deficiency or the lupus anticoagulant. The main outcome measure was symptomatic recurrent VTE, which occurred in 176 patients. The probability of recurrence (95% CI) after 2, 5 and 10 years was 13.8% (11.6% to16.5%), 24.6% (21.6% to 28.9%), and 31.8% (27.6% to 37.4%), respectively. To develop a simple and easy to apply risk assessment model, clinical and laboratory variables (age, sex, location of VTE, body mass index, factor V Leiden, prothrombin G20210A mutation, D-Dimer, in vitro thrombin generation) were preselected based on their established relevance for the recurrence risk, simple assessment, and reproducibility. All variables were analyzed in a Cox proportional hazards model, and those significantly associated with recurrence were used to compute risk scores. Only male sex [HR vs. female 1.90 (95% CI 1.31–2.75)], proximal deep vein thrombosis [HR vs. distal 2.08 (95% CI 1.16–3.74)], pulmonary embolism [HR vs. distal thrombosis 2.60 (95% CI 1.49– 4.53)] and elevated levels of D-Dimer [HR per doubling 1.27 (95% CI 1.08–1.51)] or peak thrombin [HR per 100 nM increase 1.38 (95% CI 1.17–1.63)] were related to a higher recurrence risk. We developed a nomogram (Fig. 1) based on sex, location of initial thrombosis, and D-Dimer that can be used to calculate risk scores and to estimate the cumulative probabilities of recurrence in an individual patient. The model has undergone extensive validation by a cross-validation process. The cohort was divided into test and validation samples thereby mimicking independent validation. This process was repeated 1000 times and the results were averaged to avoid dependence of the validation results on a particular partition of our cohort. Patients were assigned to different risk categories according to their risk score, which corresponded well with the recurrence rate as patients with lower scores had lower recurrence rates. Conclusion: By use of a simple scoring system the assessment of the recurrence risk in patients with a first unprovoked VTE can be improved in routine care. Patients with unprovoked VTE in whom the recurrence risk is low enough to consider a limited duration of anticoagulation, can be identified. Disclosures: No relevant conflicts of interest to declare.

Comparison of clinical probability-adjusted D-dimer and age-adjusted D-dimer interpretation to exclude venous thromboembolism

2017 ◽  
Vol 117 (10) ◽  
pp. 1937-1943 ◽  
Author(s):  
Jim Julian ◽  
Lori-Ann Linkins ◽  
Shannon Bates ◽  
Clive Kearon ◽  
Sarah Takach Lapner
Keyword(s):  
Pulmonary Embolism ◽  
Deep Vein Thrombosis ◽  
Venous Thromboembolism ◽  
Diagnostic Accuracy ◽  
Blood Samples ◽  
Vein Thrombosis ◽  
Clinical Probability ◽  
Deep Vein ◽  
New Strategies ◽  
D Dimer

SummaryTwo new strategies for interpreting D-dimer results have been proposed: i) using a progressively higher D-dimer threshold with increasing age (age-adjusted strategy) and ii) using a D-dimer threshold in patients with low clinical probability that is twice the threshold used in patients with moderate clinical probability (clinical probability-adjusted strategy). Our objective was to compare the diagnostic accuracy of age-adjusted and clinical probability-adjusted D-dimer interpretation in patients with a low or moderate clinical probability of venous thromboembolism (VTE). We performed a retrospective analysis of clinical data and blood samples from two prospective studies. We compared the negative predictive value (NPV) for VTE, and the proportion of patients with a negative D-dimer result, using two D-dimer interpretation strategies: the age-adjusted strategy, which uses a progressively higher D-dimer threshold with increasing age over 50 years (age in years × 10 µg/L FEU); and the clinical probability-adjusted strategy which uses a D-dimer threshold of 1000 µg/L FEU in patients with low clinical probability and 500 µg/L FEU in patients with moderate clinical probability. A total of 1649 outpatients with low or moderate clinical probability for a first suspected deep vein thrombosis or pulmonary embolism were included. The NPV of both the clinical probability-adjusted strategy (99.7%) and the age-adjusted strategy (99.6%) were similar. However, the proportion of patients with a negative result was greater with the clinical probability-adjusted strategy (56.1% vs, 50.9%; difference 5.2%; 95% CI 3.5% to 6.8%). These findings suggest that clinical probability-adjusted D-dimer interpretation is a better way of interpreting D-dimer results compared to age-adjusted interpretation.

scholarly journals P136: Evaluating the use of the YEARS clinical decision rule for diagnosing pulmonary embolism in the Emergency Department

CJEM ◽  
2018 ◽  
Vol 20 (S1) ◽  
pp. S105-S105 ◽  
Author(s):  
S. Sharif ◽  
C. Kearon ◽  
M. Eventov ◽  
M. Li ◽  
R. Jiang ◽  
...  
Keyword(s):  
Emergency Department ◽  
Pulmonary Embolism ◽  
Deep Vein Thrombosis ◽  
False Negative ◽  
False Negative Rate ◽  
Clinical Signs ◽  
Vein Thrombosis ◽  
Negative Rate ◽  
Deep Vein ◽  
D Dimer

Introduction: Diagnosing pulmonary embolism (PE) can be challenging because the signs and symptoms are often non-specific. Studies have shown that evidence-based algorithms are not always adhered to in the Emergency Department (ED) and are often not used correctly, which leads to unnecessary CT scanning. The YEARS diagnostic algorithm, consisting of three items (clinical signs of deep vein thrombosis, hemoptysis, and whether pulmonary embolism is the most likely diagnosis) and D-dimer, is a novel and simplified way to approach suspected acute PE. The purpose of this study was to 1) evaluate the use of the YEARS algorithm in the ED and 2) to compare the rates of testing for PE if the YEARS algorithm was used. Methods: This was a health records review of ED patients investigated for PE at two emergency departments over a two-year period (April 2013-March 2015). Inclusion criteria were ED physician ordered CT pulmonary angiogram, ventilation-perfusion scan, or D-dimer for investigation of PE. Patients under the age of 18 and those without a D-dimer test were excluded. PE was considered to be present during the emergency department visit if PE was diagnosed on CT or VQ (subsegmental level or above), or if the patient was subsequently found to have PE or deep vein thrombosis during the next 30 days. Trained researchers extracted anonymized data. The rate of CT/VQ imaging and the false negative rate was calculated. Results: There were 1,163 patients that were tested for PE and 1,083 patients were eligible for our analysis. Of the total, 317/1,083 (29.3%; 95%CI 26.6-32.1%) had CT/VQ imaging for PE, and 41/1,083 (3.8%; 95%CI 2.8-5.1%) patients were diagnosed with PE at baseline. Three patients had a missed PE, resulting in a false negative rate of 0.4% (95%CI 0.1-1.2%). If the YEARS algorithm was used, 211/1,083 (19.5%; 95%CI 17.2-22.0%) would have required imaging for PE. Of the patients who would not have required imaging according to the YEARS algorithm, 8/872 (0.9%; 95%CI 0.5-1.8%) would have had a missed PE. Conclusion: If the YEARS algorithm was used in all patients with suspected PE, fewer patients would have required imaging with a small increase in the false negative rate.

scholarly journals COT-18 TWO CASES OF GLIOBLASTOMA WITH ASYMPTOMATIC PULMONARY ARTERY EMBOLISM AND DEEP VEIN THROMBOSIS FROM ADMISSION TO HOSPITAL

2019 ◽  
Vol 1 (Supplement_2) ◽  
pp. ii43-ii44
Author(s):  
Yusuke Kobayashi ◽  
Takashi Kon ◽  
Katsuyoshi Shimizu ◽  
Daisuke Tanioka ◽  
Yosuke Satou ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Radiation Therapy ◽  
Deep Vein Thrombosis ◽  
Venous Thromboembolism ◽  
Temporal Lobe ◽  
Surgical Removal ◽  
Left Temporal Lobe ◽  
Vein Thrombosis ◽  
Deep Vein ◽  
D Dimer

Abstract Patients with malignant tumors are susceptible to concurrent venous thromboembolism. We report two cases of glioblastomas that showed asymptomatic pulmonary embolism and deep vein thrombosis on admission. The first case was a 77-year-old male. He was referred to our clinic for a tumor found in the left temporal lobe on computed tomography scan performed when he suffered pneumonia. On admission,he had a Karnofsky performance status (KPS) score of 50 and an elevated D-dimer level (16.46 μg/ml). Pulmonary embolism and deep vein thrombosis were noted on detailed examination. Direct oral anticoagulant (DOAC) therapy resulted in the disappearance of pulmonary embolism. On biopsy,the tumor was diagnosed as glioblastoma. The patient underwent radiation therapy in combination with chemotherapy. The second case was a 71-year-old female. She developed a disorder of consciousness and was admitted to a clinic. Brain magnetic resonance imaging (MRI) revealed a high T2 signal area in the left temporal lobe. The patient was initially diagnosed with encephalitis. Though the consciousness disorder improved quickly,she was referred to our clinic after a hyperintense area was observed on MRI. On admission,she had a KPS score of 100,and an elevated D-dimer level (7.59μg/ml),revealing pulmonary embolism and deep vein thrombosis. She was started on a DOAC and underwent surgical removal of the tumor via craniotomy. She was diagnosed with glioblastoma and underwent radiation therapy in combination with chemotherapy. Approximately 20% of the patients with glioblastomas suffer concurrent symptomatic venous thromboembolism. The incidence of venous thromboembolism is further elevated in patients with a poor KPS score or elderly people. Many patients with glioblastomas suffer asymptomatic venous thromboembolism. In this report,asymptomatic venous thromboembolism was noted in patients with a good KPS score. In glioblastoma patients,it is necessary to test for venous thromboembolism by measuring D-dimer levels before surgery.

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