Type Of Thrombosis Research Articles

Retrospective analysis of venous thromboembolism, arterial thromboembolism, and microthrombosis incidence at a single center during the COVID-19 pandemic.

The coronavirus disease 2019 (COVID-19) pneumonia caused by severe acute respiratory syndrome coronavirus 2 has posed a significant threat to global health since its outbreak in early 2020. Various thrombotic complications have been reported in COVID-19 cases. This study aims to investigate the incidence of various types of thromboses during the COVID-19 pandemic, and explore the potential correlation between the number of COVID-19 infections and occurrence of thrombosis. The present retrospective, single-center study recorded the number of new cases with various types of thromboembolism among all hospital admissions between 2019 and 2023 in a single center. The correlation between the number of total thromboembolism cases and number of inpatients who tested positive for COVID-19 was assessed using Spearman rank correlation coefficient. A total of 3926 thromboembolism cases were recorded in men, while 3657 cases were reported in women. The total number of new thromboembolism cases among all inpatients annually increased from 2019 to 2022, and reached a peak during the "full liberalization" period from December 2022 to January 2023. The most substantial increase was observed in microthrombosis cases, followed by venous and arterial thrombosis cases. In addition, thromboembolism primarily occurred in the lower extremities, followed by the abdomen. The fewest cases were observed in the upper extremities. Furthermore, the correlation coefficient between the total number of thromboembolism cases and number of COVID-19-positive patients between January 2020 and June 2023 was 0.501 (P = .001). The number of thromboembolism cases among all inpatients was correlated to the number of COVID-19-positive patients during the pandemic. Early thromboembolism prophylaxis and thrombotic complications monitoring should be considered for hospitalized patients, when necessary.

Modelling growth and formation of thrombi: a multiphasic approach based on the theory of porous media

AbstractAortic dissection (AD) has a high mortality rate. About 40% of the people with type B AD do not live for more than a month. The prognosis of AD is quite challenging. Hence, we present a triphasic model for the formation and growth of thrombi using the theory of porous media (TPM). The whole aggregate is divided into solid, liquid and nutrient constituents. The constituents are assumed to be materially incompressible and isothermal, and the whole aggregate is assumed to be fully saturated. Darcy’s law describes the flow of fluid in the porous media. The regions with thrombi formation are determined using the solid volume fraction. The velocity- and nutrient concentration-induced mass exchange is defined between the nutrient and solid phases. We introduce the set of equations and a numerical example for thrombosis in type B AD. Here we study the effects of different material parameters and boundary conditions. We choose the values that give meaningful results and present the model’s features in agreement with the Virchow triad. The simulations show that the thrombus grows in the low-velocity regions of the blood. We use a realistic 2-d geometry of the false lumen and present the model’s usefulness in actual cases. The proposed model provides a reasonable approach for the numerical simulation of thrombosis.

Alpha-ketoglutarate supplementation reduces inflammation and thrombosis in type 2 diabetes by suppressing leukocyte and platelet activation.

The interplay between platelets and leukocytes contributes to the pathogenesis of inflammation, thrombosis, and cardiovascular diseases (CVDs) in type 2 diabetes (T2D). Our recent studies described alpha-ketoglutarate (αKG), a Krebs cycle intermediate metabolite as an inhibitor to platelets and leukocytes activation by suppressing phosphorylated-Akt (pAkt) through augmentation of prolyl hydroxylase-2 (PHD2). Dietary supplementation with a pharmacological concentration of αKG significantly inhibited lung inflammation in mice with either SARS-CoV-2 infection or exposed to hypoxia treatment. We therefore investigated if αKG supplementation could suppress hyperactivation of these blood cells and reduce thromboinflammatory complications in T2D. Our study describes that dietary supplementation with αKG (8 mg/100 g body wt. daily) for 7 days significantly reduced the activation of platelets and leukocytes (neutrophils and monocytes), and accumulation of IL1β, TNFα, and IL6 in peripheral blood of T2D mice. αKG also reduced the infiltration of platelets and leukocytes, and accumulation of inflammatory cytokines in lungs by suppressing pAkt and pP65 signaling. In a cross-sectional investigation, our study also described the elevated platelet-leukocyte aggregates and pro-inflammatory cytokines in circulation of T2D patients. T2D platelets and leukocytes showed an increased aggregation and thrombus formation in vitro. Interestingly, a pre-incubation of T2D blood samples with octyl αKG significantly suppressed the activation of these blood cells and ameliorated aggregate/thrombus formation in vitro. Thus, suggesting a potential therapeutic role of αKG against inflammation, thrombosis, and CVDs in T2D.

Multiphasic modelling of thrombus formation and growth based on the Theory of Porous Media

AbstractAortic dissection (AD) has a high mortality rate. 40% of the people with Type B Aortic Dissection do not live for more than a month. The prognosis of Aortic Dissection is quite challenging leading to an interest in computational methods to help with the decision‐making process for the treatment. The Theory of Porous Media (TPM) provides an excellent framework to describe the multiphasic structure of the thrombus. The whole aggregate is divided into solid, liquid and nutrient constituents. We assume the constituents to be materially incompressible, the whole aggregate to be fully saturated and under isothermal conditions. The balance equations of the constituents have coupling terms, also known as production terms, which take care of the interactions between the different phases. The volume fractions define the constituents. Therefore, the regions with thrombus are determined using the solid volume fraction. Darcy's law describes the flow of fluid in the porous media. We present the set of equations and a numerical example for thrombosis in Type B Aortic Dissection. We implement the equations in PANDAS, a finite element package designed to solve strongly coupled multiphase porous media problems.

Early stent thrombosis in Kounis syndrome - a case report

Introduction. Kounis syndrome is a simultaneous manifestation of acute coronary syndrome and conditions associated with mast cell activation, such as allergies or anaphylactic reactions. We present early stent thrombosis in a female with an atopic constitution without previous atherosclerosis of coronary arteries. Case report. A 50-year-old woman with typical anginal pain was admitted to the Clinic for Cardiology, University Clinical Center Nis. A few hours earlier, she had passed by a linden tree in bloom. She immediately felt chest pain, paresthesia and numbness in her left arm throat tightness, heaviness of the tongue, and swelling of the lips. The symptoms disappeared for 60 min after taking 10mg of loratadine, but then they recurred. On the electrocardiographic (ECG) findings, 30 minutes after admission, ST elevation was seen in leads D2, D3, aVF, and V6. She underwent an emergency percutaneous coronary intervention procedure. Occlusive thrombosis was seen in the ostium of the left anterior descending (LAD) coronary artery. A sirolimus-coated stent was placed and thrombolysis in myocardial infarction (TIMI) 3 flow was obtained. A few hours after the intervention, the patient reported a new onset of chest pain followed by ventricular fibrillation (VF), DC shock, and the occurrence of new ST-segment elevation in aVR and V1?V3 on the ECG. Repeated angiography showed acute instent thrombotic occlusion. Balloon angioplasty was performed, which restored TIMI 3 flow in LAD coronary artery. Anticoagulant and corticosteroid therapy was administered. Three days after the intervention, optical coherence tomography imaging was performed, which showed good stent expansion and apposition, without atherosclerosis and thrombosis. Conclusion. Coronary angiography proved type I Kounis syndrome after exposure to an allergen, and type III Kounis syndrome developed shortly after stent placement when acute instent thrombosis occurred. Newly described causes of acute and sub-acute stent thrombosis in type III Kounis syndrome are stent-associated hypersensitivity reactions.

Monitoring of false lumen thrombosis in type B aortic dissection by impedance cardiography - A multiphysics simulation study.

Aortic dissection is caused by a tear on the aortic wall that allows blood to flow through the wall layers. Usually, this tear involves the intimal and partly the medial layer of the aortic wall. As a result, a new false lumen develops besides the original aorta, denoted then as the true lumen. The local hemodynamic conditions such as flow disturbances, recirculations and low wall shear stress may cause thrombus formation and growth in the false lumen. Since the false lumen status is a significant predictor for late-dissection-related deaths, it is of great importance in the medical management of patients with aortic dissection. The hemodynamic changes in the aorta also alter the electrical conductivity of blood. Since the blood is much more conductive than other tissues in the body, such changes can be identified with non-invasive methods such as impedance cardiography. Therefore, in this study, the capability of impedance cardiography in monitoring thrombosis in the false lumen is studied by multiphysics simulations to assist clinicians in the medical management of patients under treatment. To tackle this problem, a 3D computational fluid dynamics simulation has been set up to model thrombosis in the false lumen and its impact on the blood flow-induced conductivity changes. The electrical conductivity changes of blood have been assigned as material properties of the blood-filled aorta in a 3D finite element electric simulation model to investigate the impact of conductivity changes on the measured impedance from the body's surface. The results show remarkable changes in the electrical conductivity distribution in the measurement region due to thrombosis in the false lumen, which significantly impacts the morphology of the impedance cardiogram. Thus, frequent monitoring of impedance cardiography signals may allow tracking the thrombus formation and growth in the false lumen.

Risk Of Pulmonary Artery Thrombosis In Type 2 DM Patients Hospitalized With Covid-19

For the first time on the Fergana Valley model, prognostic markers of the risk of thrombotic complications in COVID-19 patients with type 2 diabetes were studied. It was found that the level of glycemia, the concentration of proinflammatory cytokines IL-6, ferritin and CRP, and the marker of thrombus formation - d dimer, have a prognostic significance, with the maximum prognostic significance of the concentration of CRP. The prognostic significance of ultrasound in the aspect of thrombosis of the branches of the PA in patients with COVID-19 against the background of type 2 diabetes was established. Predictor markers are mean PA pressure, LV myocardial mass index, signs of increased intraventricular pressure in the RV, and evidence of peripheral venous thrombosis.

Chronic pulmonary thromboembolism in a patient of erythema nodosum leprosum treated with thalidomide and corticosteroid

Thalidomide is the drug of choice for erythema nodosum leprosum (ENL) in men. Its use in patients with multiple myeloma has been reported to cause venous thrombosis. Postulated mechanism is an increase in procoagulant state with the use of thalidomide along with corticosteroids in the underlying hyperviscosity in multiple myeloma. We report a case of superficial and deep vein thrombosis and chronic pulmonary vein embolism in a patient of ENL treated with thalidomide and corticosteroid. An increase in procoagulant state with the use of these two medicines along with a persistent inflammatory state in ENL and an increased risk of venous thrombosis in type 3 hypersensitivity together may have resulted in thrombus formation.

Intercostal artery embolization to induce false lumen thrombosis in type B aortic dissection.

Persistent false lumen flow is common after thoracic endovascular aortic repair of type B aortic dissection and may contribute to continued aortic aneurysmal degeneration. We report an innovative technique of intercostal artery embolization within the false lumen for a patient who had incomplete false lumen thrombosis and progressive aortic enlargement after thoracic endovascular aortic repair of chronic type B aortic dissection. Technical success was facilitated by use of on-table cone beam computed tomography angiography, virtual vessel marking, and modern endovascular tools. The patient had no complications from the procedure. Postoperative imaging demonstrated complete thoracic false lumen thrombosis and favorable aortic remodeling with reduction in maximal aortic diameter.

SAT-660 Rare Case of Portal Vein Thrombosis Secondary to Acute Pyelonephritis in Type 1 Diabetic Patient

Background: Portal vein thrombosis (PVT) refers to venous thrombosis that develops within the extrahepatic portal venous system and can extend to the branches of the intrahepatic portal vein or up to splenic veins and superior mesenteric. A few cases have been reported about portal vein thrombosis in non-cirrhotic patient. Asymptomatic or non-specific symptom of portal vein thrombosis may lead to misdiagnosed or delay the diagnosis until the complications develop. We report a case of Portal vein thrombosis in type one diabetes associated with acute pyelonephritis. Case report: 18 years old female with type one diabetes on insulin pump present with epigastric abdominal pain for three days associated with nausea and vomiting of three days duration. On examination; conscious alert oriented young female looks in pain, vital sign were stable temperature 37oC, heart rate 89 beat per minute, blood pressure 103/72 mmHg, respiratory rate 20 per minute, oxygen saturation 100% and random blood sugar (RBS) 179 mg/dl. Abdominal examination revealed soft and lax abdomen with tenderness in the epigastric area and right renal angle. No sign of rigidity or rebound tenderness. Bowel sound was present. No sign of ascites, splenomegaly or hepatomegaly. Investigations showed; WBC: 10.2, neutrophil 65%, urine analysis WBCs 30-50 per high field microscopy, RBC 5-10, PH 7, negative nitrate and culture did not show any growth. ESR was 48 and CRP was 4.2. Thrombophilic screen was done and all within normal. Computed tomography (CT) reveled reduced enhancement of right kidney likely indicating acute pyelonephritis and portal vein edema with complete occlusion of left branch of portal vein. Local factors and prothrombotic disorders were ruled out. The patient was managed with ciprofloxacin, enoxaparin and warfarin. The patient was symptomatic free and discharge home with a therapeutic range INR. Conclusion: Portal vein thrombosis is uncommon condition in absence of liver diseases. Few case report liking between sepsis and portal vein thrombosis. Sepsis can create a predisposed environment for hypercoagulability.

A case report of a recurrent early and late Bioresorbable vascular scaffold thrombosis: serial angiography and optical coherence tomography findings

BackgroundIn bioresorbable vascular scaffolds (BVSs), there is some concern about a possible increase in the rate of scaffold thromboses (ScTs). Although several characteristics similarly contribute to the development of both early and late ScTs, there are also clearly different pathomechanisms between the two time-dependent types of thromboses, especially with BVSs.Case presentationWe recently experienced a very rare case of a 69-year-old man who had recurrent early and late ScTs with somewhat differing pathomechanisms as assessed by optical coherence tomography (OCT). For the late ScT, OCT identified a scaffold dismantling in the same place that a peri-strut low intensity area (PLIA) was observed in the previous OCT finding.ConclusionWe report the management of an ScT in a case with findings such as a heterogeneous a BVS degradation, peri-strut low intensity area (PLIA), intraluminal scaffold dismantling, and under-sizing and/or stent malapposition observed in OCT.

Multi-center Study on False Lumen Patency and Thrombosis in Type B Aortic Dissection Patients: Importance of (Minor) Side Branches

Multi-center Study on False Lumen Patency and Thrombosis in Type B Aortic Dissection Patients: Importance of (Minor) Side Branches

Factors Associated with Deep Vein Thrombosis in Type 2 Diabetics with Biopsy-Proven Non-alcoholic Fatty Liver Disease

Non-alcoholic fatty liver disease (NAFLD) can lead to a prothrombotic stage increasing the risk of deep vein thrombosis (DVT). We aimed to assess the prevalence and factors associated with DVT in patients with type 2 diabetes (T2D) and biopsy-proven NAFLD. Using ICD-codes, all T2D patients who had liver biopsy done for suspected NAFLD were identified and assessed. Patients with secondary causes of hepatic steatosis (Hepatitis, excess alcohol, etc.) were excluded. Liver biopsy was staged as F0-4, advanced fibrosis (AF) being F3-4. A univariable and multivariate analysis was performed to assess factors associated with DVT. A total of 1295 patients were included in the final analysis. DVT was present in 5.5% of these patients. Our cohort consisted of 62% females, 90% were Caucasians, and 90% were obese or overweight (p = 0.59, 0.22, and 0.53, respectively). Mean platelet count was 200.1 ± 82.2 (p = 0.048) and mean HbA1c was 6.9 ± 1.7 (p = 0.71). On multivariate analysis, a 5-year increment in the age at time of T2D diagnosis was associated with 10% increase in likelihood of having DVT (OR {95% CI} 1.1 (1.01, 1.3), p = 0.031). Patients with IBD were 3-times more likely to have DVT than those without IBD and being on furosemide was associated with 2.5-times higher odds of DVT (OR {95% CI} 3.0 (1.3, 7.1), p = 0.012 and 2.5 (1.5, 4.1), p < 0.001, respectively). Our study suggests that older age, stricturing IBD disease, and use of furosemide in T2D with NAFLD increase the risk of DVT. Future prospective studies are required to confirm these findings. Clinical trial registration number: CCF 16-018

Factors Associated With Deep Vein Thrombosis in Type 2 Diabetics With Biopsy-Proven Non-Alcoholic Fatty Liver Disease

Factors Associated With Deep Vein Thrombosis in Type 2 Diabetics With Biopsy-Proven Non-Alcoholic Fatty Liver Disease

A computational model for false lumen thrombosis in type B aortic dissection following thoracic endovascular repair

Thoracic endovascular repair (TEVAR) has recently been established as the preferred treatment option for complicated type B dissection. This procedure involves covering the primary entry tear to stimulate aortic remodelling and promote false lumen thrombosis thereby restoring true lumen flow. However, complications associated with incomplete false lumen thrombosis, such as aortic dilatation and stent graft induced new entry tears, can arise after TEVAR. This study presents the application and validation of a recently developed mathematical model for patient-specific prediction of thrombus formation and growth under physiologically realistic flow conditions. The model predicts thrombosis through the evaluation of shear rates, fluid residence time and platelet distribution, based on convection-diffusion-reaction transport equations. The model was applied to 3 type B aortic dissection patients: two TEVAR cases showing complete and incomplete false lumen thrombosis respectively, and one medically treated dissection with no signs of thrombosis. Predicted thrombus growth over time was validated against follow-up CT scans, showing good agreement with in vivo data in all cases with a maximum difference between predicted and measured false lumen reduction below 8%. Our results demonstrate that TEVAR-induced thrombus formation in type B aortic dissection can be predicted based on patient-specific anatomy and physiologically realistic boundary conditions. Our model can be used to identify anatomical or stent graft related factors that are associated with incomplete false lumen thrombosis following TEVAR, which may help clinicians develop personalised treatment plans for dissection patients in the future.

Mean Platelet Volume and Platelet Distribution Width as Markers of Vascular Thrombosis in Type 2 Diabetes Mellitus

ABSTRACT Aims The objective of the study was to determine the mean platelet volume (MPV) and platelet distribution width (PDW) in subjects with type 2 diabetes mellitus (type 2 DM) compared to subjects without type 2 DM and their correlation with fasting blood glucose, glycosylated hemoglobin (HbA1c), and duration of type 2 DM respectively. Materials and methods A prospective analytical case—control study was conducted involving 50 subjects with type 2 DM and 50 subjects without type 2 DM. The mean and standard deviation were estimated for both the groups separately and independent Student's “t”-test was used for evaluating the significant difference. The statistical evaluation was carried out at 95% confidence level. Results Mean MPV and PDW in case group was significantly higher compared to control group (p &lt; 0.005). Fasting blood glucose, HbA1c, and duration of type 2 DM did not significantly alter MPV or PDW. Conclusion The study concludes that MPV and PDW are significantly increased in patients with type 2 DM compared to patients without type 2 DM. Platelet volume indices are an important, simple, and cost-effective tool that should be used and explored extensively, especially in countries, such as India, for predicting the possibility of impending acute vascular events in patients with type 2 DM. Clinical significance This analytical method helps us to use MPV and PDW as early markers of vascular thrombosis. How to cite this article Bhanukumar M, Ramaswamy PKH, Peddi NK, Menon VB. Mean Platelet Volume and Platelet Distribution Width as Markers of Vascular Thrombosis in Type 2 Diabetes Mellitus. J Postgrad Med Edu Res 2016;50(3):127-131.

Role of endoplasmic reticulum stress and thrombosis in type 2 diabetes‐induced vascular dysfunction

Endoplasmic reticulum (ER) stress and thrombosis are important mechanisms that underlie many of the serious consequences of type 2 diabetes. However, the interaction between the ER stress and thrombosis in diabetes‐induced endothelial dysfunction remains unknown. Ten‐weeks‐old type 2 diabetic mice (db‐/db‐) and their controls (db‐/db+) treated with or without the ER stress inhibitor (tauroursodeoxycholic acid, TUDCA, 150 mg/kg per day, for 2 weeks) were used to determine the in vivo contribution of ER stress in vascular dysfunction. Blood pressure was similar in all groups of mice. Blood glucose and body weight were reduced in (db‐/db‐) mice treated with TUDCA. The impaired endothelium‐dependent relaxation (EDR), in response to acetylcholine, in (db‐/db‐) mice was restored after treatment with TUDCA in both aorta and mesenteric resistance arteries (MRA). Additionally, ER stress markers (CHOP and ATF4), NADPH oxidase activity and the mRNA levels of Nox2 and Nox4, which were increased in MRA and aorta from (db‐/db‐) mice, were significantly reduced after TUDCA treatment. Moreover, the vasoconstriction to thrombin and the mRNA levels of thrombin receptor (PAR1) were increased only in MRA from (db‐/db‐) mice and reduced after treatment with TUDCA.This study unveiled novel role of ER stress in the regulation of thrombin signaling and therefore vascular dysfunction in type 2 diabetes.

Soluble endothelial protein C receptor and high sensitivity C reactive protein levels as markers of endothelial dysfunction in patients with type 1 and type 2 diabetes mellitus: Their role in the prediction of vascular complications

Background and objectiveEndothelial dysfunction in diabetes mellitus (DM) is an important factor in the pathogenesis of micro and macrovascular complications. We aimed to measure soluble endothelial protein C receptor (sEPCR) and high sensitivity C reactive protein (hsCRP) levels as markers of endothelial damage in both types of diabetes mellitus and to determine if they can be used as predictors of vascular complications. MethodsFifty patients with DM, 20 with type 1 and 30 with type 2 as well as 30 healthy subjects were included. All were subjected to measurement of sEPCR and hsCRP by enzyme linked immunosorbent assay. ResultssEPCR and hsCRP were significantly increased when compared to the control group in both types of DM. sEPCR was a significant predictor of macrovascular complications and thrombosis in type 1 p=0.02, and p=0.015, respectively. hsCRP was a significant predictor of macrovascular complications in type 2 p=0.04. ConclusionPatients with type 1 and type 2 DM exhibit higher sEPCR and hsCRP levels compared to healthy controls which suggesting endothelial damage. sEPCR could be used as a predictor of macrovascular complications and thrombosis in type 1 DM, whereas, hsCRP might be used as a predictor of macrovascular complications in type 2 DM.

Predictors of false lumen thrombosis in type B aortic dissection treated with TEVAR.

Thoracic endovascular aortic repair (TEVAR) offers a less invasive treatment option in type B aortic dissection (TBAD) patients and its value has been demonstrated in acute and chronic dissection patients. Total false lumen thrombosis (FLT) is associated with better long-term outcome in these patients, however, this is not obtained in all patients. The purpose of this study was to investigate predictors of FLT. We retrospectively investigated patients who underwent TEVAR for a type B dissection in a large referral center between 2005 and 2012. All patients with a CT angiogram (CTA) obtained preoperatively, postoperatively and after one year of follow-up were selected for analysis. Volume measurements and several morphologic characteristics were analyzed for all scans using Aquarius iNtuition software (TeraRecon, San Mateo, Calif, USA). Multivariate logistic regression analyses were used to study the influence of these characteristics on FLT. Of 132 patients that received TEVAR for an aortic dissection, 43 patients (mean age, 60.3±14.2; 30 male) met our inclusion criteria, of whom 16 (37%) developed full FLT after 1 yr of follow-up. Multivariate logistic regression showed that side branch involvement [odds ratio (OR), 0.03; 95% confidence interval (CI), 0.00-0.92; P=0.045] and a total patent false lumen (FL) at presentation (OR, 0.01; 95% CI, 0.00-0.58; P=0.027) were associated with decreased complete FLT. Volumetric data showed significantly more reduction of the thoracic false lumen in FLT patients compared with non-FLT (-52.3% vs. -32.4%; P=0.043) and also a tendency of less volume increase in the abdominal segment (-5.0±37.5 vs. 21.8±44.3; P=0.052). Patients admitted with type B dissection and branch vessel involvement or a patent entry tear after TEVAR are less likely to develop FLT and aortic remodeling during follow-up. These findings suggest that these patients may require a more extensive procedure and more intensive follow-up to prevent long-term complications.

Prevalence, risk factors, treatment and outcomes of catheter-related thrombosis in patients with malignancies.

e17517 Background: Tunnelled catheters (Leonard, BARD) and peripherally inserted central catheters (Piccline, BARD) are used for intravenous therapies in patients with malignancies. Thrombosis is a well known complication, but risk factors are not clearly established. The objective the incidence, risk factors, therapeutic approaches and complications of catheter-related thrombosis among patients with malignancies. Methods: Medical charts of patients with malignancies and Leonard or Piccline inserted, from August 2002 to December 2006 at Hôpital de l’Enfant-Jésus (Québec City, Canada), were retrospectively reviewed. Results: A total of 618 catheters were inserted in 361 patients. Eighty-six percent of the catheters were placed in patients with hematologic malignancies and most were Piccline (70%). Sixty-one thromboses were identified (incidence of 10%). Fourteen percent of the patients had more than one episode of catheter-related thrombosis. The majority of thromboses was related to a Piccline (93%) and occurred at a mean time of 34 days after the insertion. At the time of thrombosis, the mean platelet count was 169 x 109/L. Previous history of a catheter-related thrombosis (OR = 4.30 (1.48-12.50); p = 0.0075) as well as lymphoma (OR = 3.29 (1.22-8.87); p = 0.0185) were associated with superficial thromboses. The Piccline was associated with both types of thromboses (OR = 5.78 (1.69-19.74); p = 0.0051), especially with superficial thromboses. Most of the catheters (88%) were removed once a thrombosis was identified. The management of anticoagulation varied considerably. No complication associated with thromboses was reported. Conclusions: The incidence of central venous catheter-related thrombosis was 10%. The thrombosis occurred on average 34 days after the insertion. The Piccline was associated with all types of thromboses, especially the superficial ones. A previous history of catheter-related thrombosis and lymphoma were risk factors for superficial thromboses. Further studies are necessary to better define characteristics and optimal management of central catheter-related thrombosis.