Tesi sul tema "Maladive veineuse thromboembolique"
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Danguy, des Déserts Marc. "Impact de l'inflammation, de la dysfonction endothéliale et de la fibrinolyse sur le risque de séquelles perfusionnelles". Electronic Thesis or Diss., Brest, 2024. http://www.theses.fr/2024BRES0034.
Testo completoVenous thromboembolism (VTE) is the third leading cause of cardiovascular death. Pulmonary embolism (PE) is the most severe form of venous thrombosis. Patients with unprovoked PE are at high risk of residual pulmonary vascular obstruction (RPVO). Failure to resolve the thrombus increases the risk of thromboembolie recurrence. The aim of this work was to assess the impact of three mechanisms potentially involved in thrombus persistence: inflammation, endothelialdysfunction and fibrinolysis in patients with unprovoked PE.A preliminary study shows that fibrinolysis defect and endothelial dysfunction are involved in perfusion sequelae in a population of patients presenting with a first episode of unprovoked PE.A semi-automated Clôt Lysis Assay (CLA) was set up to assess coagulation and fibrinolysis and plasma levels of TGFβ1 are quantified. TGFβ1 plasma levels measured one month after anticoagulant discontinuation are associated with RPVO, while fibrinolysis parameters are not. Clôt formation parameters measured by CLA are associated with VTE recurrence. These results provide a better understanding of the pathophysiology of RVPO and VTE recurrence to optimise the treatment of unprovoked PE
Suchon, Pierre. "Identification de variants génétiques associés à la thrombose veineuse". Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0658/document.
Testo completoVenous thromboembolism (VT) results from the interaction between environmental and genetic factors. Five inherited hemostatic defects are part of the thrombophilia screening (TS): AT, PC and PS deficiencies, factor V Leiden and prothrombin mutation. A molecular defect is identified in only half of assumed PS deficiencies. In the first article, only detrimental mutations (DM) located on PROS1 (PS gene) increased VT risk. Only free PS levels below 30% enabled the identification of DM. PS Heerlen mutation located within PROS1 has been considered neutral for a long time. In the second article, the association between PS Heerlen and VT has been tested in a sample of 4173 patients with VT history and 5970 healthy individuals. PS Heerlen was associated with a 6.57 increased risk of VT. Recent genome wide association studies identified nearly 30 polymorphisms associated with VT. However, the impact of such polymorphisms in families with known defects is uncertain. We therefore tested in a third article the association between 11 selected polymorphisms, obesity, smoking and VT in 651 families with known thrombophilia. Considering 5 common risk factors (obesity, smoking, ABO blood group, two polymorphisms located on FGG and F11) together with the TS resulted in a better assessment of VT risk in individuals from families with thrombophilia. We then applied the same strategy in a sample of women using combined oral contraceptives. Three common risk factors (non-O blood groups, obesity and a polymorphism located on F11), when combined, were associated with a 13 OR. In conclusion, considering common risk factors improved the individual assessment of VT risk
Robin, Philippe. "Maladie veineuse thromboembolique et cancer : approches diagnostiques". Thesis, Brest, 2019. http://www.theses.fr/2019BRES0003/document.
Testo completoVenous thromboembolism (VTE), which encompasses deep vein thrombosis and pulmonary embolism, can occur as the first manifestation of an underlying occult malignancy. Previous studies reported that the incidence of undiagnosed cancer is 6% to 15% in the year following an unprovoked VTE épisode, i.e. VTE not provoked by a major risk factor.In patients with unprovoked VTE, extensive screening for cancer has been proposed in order to diagnose occult malignancy as early as possible in the hope of improving the prognosis. Current guidelines for occult cancer screening in patients with unprovoked VTE recommend limited cancer screening, including of a thorough medical history and physical examination, basic laboratory investigations, chest X-ray, as well as age-specific and gender-specific cancer screening (colon, breast, and prostate) according to national guidelines.18F-Fluorodesoxyglucose Positron Emission Tomography combined with Computed Tomography (FDG PET/CT) is routinely used for the diagnosis and staging of various malignancies. The use of FDG PET/CT might overcome the limitations of previous extensive screening strategies as it involves whole-body imaging using a single, non-invasive test. To date, there has been no formal assessment of the additional value of FDG PET/CT for occult malignancy screening in patients with unprovoked venous thromboembolism.To address this issue, we conducted a multicenter randomised controlled trial comparing a limited screening strategy to a strategy combining limited screening and FDG PET/CT in patients with unprovoked venous thromboembolism, and then assessed the additional value of FDG PET/CT in addition to a limited strategy
Fournier, Bureau. "Prévention des thromboses veineuses profondes en milieu médical : enquête des pratiques à l'hôpital Saint-André, CHU de Bordeaux". Bordeaux 2, 1999. http://www.theses.fr/1999BOR2P024.
Testo completoLacut, Karine. "Médicaments et maladie veineuse thromboemboliqueDe l'observation vers l'explication". Brest, 2008. http://www.theses.fr/2008BRES3202.
Testo completoVenous thromboembolism (VTE) is a frequent and multifactorial disease. Among acquired risk factors, use of some medications can contribute to venous thromboembolic events. In a first part, we investigated the effects of oral and transdermal estrogen replacement therapy (ERT) on several biological parameters involved in venous and/or arterial thrombotic risk: sensitivity to activated protein C, homocystéinemia, and C-reactive protein level. Our results support the biological plausibility of an increased risk 0f VTE with oral ERT suggested by observational studies and confirmed by interventional studies. Transdermal ERT appeared to have a neutral effect suggesting a more favourable impact of this route of administration on venous and arterial risk. In a second part, we evaluated the association between risk of VTE and drugs exposure. Drugs were selected for their suspected effect (deleterious or favourable) on VTE. Using a case-control study, we found : 1) an increased risk of VTE with exposure to antipsychotic drugs and fibrates 2) no association between antidepressant drugs and VTE 3) a decreased risk of VTE with exposure to statins and aspirin. The associations between lipid-lowering drugs and VTE seemed independent of homocysteinemia and Iipid parameters
Mai, Vicky. "Le traitement de la maladie thromboembolique veineuse : enjeux et nouveautés". Master's thesis, Université Laval, 2021. http://hdl.handle.net/20.500.11794/68975.
Testo completoIntroduction: Venous thromboembolism (VTE) is very frequent. Direct oral anticoagulants(DOAC) were superior to vitamin K antagonists (VKA) in the acute treatment of VTE.However, many evidences are still lacking. The goal of this research thesis is to present different research projects, completed during my clinical epidemiology master’s, on different aspects of treatment and prevention in VTE. Methods: Two meta-analyses evaluating extended treatment (after the first 3 to 6 months of anticoagulation) in VTE will be presented. The first study evaluated different treatments and the second study evaluated the effect of DOAC on all-cause mortality. The two subsequent meta-analyses included patients with cancer and patient with obesity/morbid obesity,respectively, representing two subpopulations for which limited data is available regarding DOACs’ efficacy and security. The last project is a retrospective cohort study evaluating the effect of the implementation of a prescription protocol on the adherence of pharmacological thromboprophylaxis in patients admitted to the hospital. Results: For the extended treatment, while standard dose VKA and DOAC prevented VTE recurrence and were associated with an increase in major bleeding, only DOAC reduced allcause mortality and VTE-associated mortality compared to observation alone. In the treatment of cancer-associated thrombosis, DOAC were non-inferior to low molecular weight heparin (LMWH) in regards of VTE recurrence, but DOAC were associated with increased bleeding. In patients with obesity and morbid obesity treated with DOAC compared to VKA/LMWH, no difference was seen in VTE recurrence, but DOAC seemed to reduce major bleeding. In VTE prevention, implementing a pharmacological thromboprophylaxis prescription protocol seemed to improve prescription adherence in patients hospitalized fora medical problem. Conclusion: This research thesis demonstrated that DOAC were efficient and safe in the extended treatment in patients with cancer and in patients with obesity. Finally, the effect of a tool possibly helping the improvement of VTE prevention has also been demonstrated.
Couturaud, Francis. "Risque de maladie thrombo-embolique veineuse chez les membres de familles au premier degré de patients ayant une maladie thrombo-embolique veineuse idiopathique". Lyon 1, 2006. http://www.theses.fr/2006LYO10184.
Testo completoRational : In patients with idiopathic venous thromboembolism (VTE), the risk of recurrent VTE is high and a large proportion of these patients carry inherited thrombophilia. Our hypothesis is that patients with idiopathic VTE without detectable inherited thrombophilia have a genetic prothrombotic state not yet discovered. Objective : To evaluate the risk of VTE in first degree relatives of patients with idiopathic VTE and with or without inherited thrombophilia. If our hypothesis is true, this risk should be similar, with or without thrombophilia. Methods : In this international multicentre study, 1778 first degree relatives of 348 propositus with objectively diagnosed idiopathic VTE were included. Relatives were classified as having “certain VTE”, “uncertain VTE” or “no VTE” according to a predefined and standardised questionnaire. All the propositus were tested for the Leiden mutation and the G20210A prothrombin gene mutation. Results : In multivariate analysis, when “uncertain VTE” were classified as “No VTE”, we observed a trend of an increased risk of VTE in first degree relatives of probants with an inherited thrombophilia (relative risk of 1,52 [0,98 – 2,37], p = 0,06); when “uncertain VTE” were classified as “certain VTE”, the relative risk of VTE was closed to 1. 0 (1,18 [0,87-1,60], p = 0,3). For each level of VTE diagnosis criteria precision, there was an increased risk of VTE in first degree relatives women and in relatives from younger probants. Conclusion : The presence of an inherited thrombophilia in patients with idiopathic VTE is weakly associated with an increased risk in their first degree relatives. This observation supports our scientific hypothesis. One the main implications of this study is that the prevention of VTE should not be proposed in only first degree relatives of patients with VTE and inherited thrombophilia
Olié, Valérie. "La maladie veineuse thromboembolique : étude des facteurs de risque de récidive". Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00719318.
Testo completoSevestre-Pietri, Marie-Antoinette. "Réactualisation de modèles épidémiologiques et application à la maladie thromboembolique veineuse". Grenoble, 2010. http://www.theses.fr/2010GRENS042.
Testo completoVenous thrombo-embolism is a heterogenous disease. Clinical presentation, prognosis vary greatly among patients and requires standardization. Using 3 epidemiological studies, we have analyzed, risk factors and diagnostic tools that are described in venous thromboembolism (VTE) and compared clinical forms. The following models have been tested: - two epidemiologic cross sectional studies of elderly patients describing risk factors and asymptomatic thrombosis detected by systematic ultrasound. Elderly patients have specific risk factors like prolonged immobilisation, dependance, age over 79 years, ulcers. The benefit of prevention is established and enhanced by a 15% rate of asymptomatic venous thromboses. Despite this, the benefit of antithrombotic compression is not proven and deserves further work. - The Optimev study, a national survey about 8256 clinical suspicions of VTE, describes risk factors and clinical description and long term follow-up for positive and negative patients. Calf vein thrombosis is the clinical form mostly prevalent (n=787). Actual analysis of clinical forms like isolated pulmonary embolism (n=130) show that mortality is close to controls in patients with PE without DVT ( 4%) whereas it is close to 13% in patients with PE with DVT; thus, the presence of DVT when diagnosis PE is of clinical importance. Deep vein thromboses and muscular thromboses are compared; they share the same risk factors and 3 month's mortality, clinical presentation is different; deep vein thromboses are more associated with swelling but less painful than muscular ones. 3 month follow-up shows that a negative ultrasound rules out VTE safely as well for in and out-patients. A clinical prediction rule for upper extremity DVT is also presented. Future works such as : 3 years follow-up, superficial venous thromboses, post thrombotic syndrome and qualification of past episodes of VTE are warranted Mots clés
Charles, Jean-Marc. "Strategie diagnostique de la maladie thromboembolique veineuse : analyse preliminaire d'une etude multicentrique regionale". Nancy 1, 1993. http://www.theses.fr/1993NAN11206.
Testo completoCostet, Elisabeth. "Etude de l'hemostase et maladie veineuse thromboembolique : etude clinique et biologique de 269 cas". Lyon 1, 1992. http://www.theses.fr/1992LYO1M061.
Testo completoNoboa, Maria Soledad. "La prise en compte des facteurs temps dépendants dans l'évaluation du risque de récidive de la maladie veineuse thromboembolique". Brest, 2008. http://www.theses.fr/2008BRES3073.
Testo completoMICHON, MARIE-LAURE. "Etude de la maladie thromboembolique pendant une annee dans six services hospitaliers dijonnais". Dijon, 1994. http://www.theses.fr/1994DIJOM035.
Testo completoBouaziz, Borji Lobna. "Les gènes de prédisposition à la maladie thromboembolique veineuse dans une population tunisienne". Reims, 2006. http://theses.univ-reims.fr/exl-doc/GED00000301.pdf.
Testo completo@Venous thromboembolism is one of the major causes of morbidity and mortality in different parts of the world, including Tunisia, adding a high cost to national health programs. Genetic risk factors responsible for thrombophilia have been reconized to have an important role in caucasian populations. Studies about the association between genetic risk factors and venous thromboembolism studies are lacking in the Tunisian population. The first part of this document is an epidemiological study aiming at determining the frequency of FV Leiden, FII G20210A and MTHFR C677T mutations in healthy and thrombophilic Tunisian populations and to estimate the risk of venous thrombosis. We also, have presented data about the frequency and odd- ratio of factor V Cambridge, factor V Hong Kong and haplotype HR2 polymorphisms in Tunisia. Our study suggests that factor V Leiden mutation is present in the tunisian population at a frequency similar to that reported in European population and that it is associated with an increased risk for venous thrombembolism in Tunisians. In the second part, we evaluate the use of thrombin generation assay in the screening of patients who require specific thrombophilic risk factor testing. Thrombin generation assay is performed in platelet rich plasma , with and without immunopurified activated protein C, and with and without Protac®, a fast-activating PC activator isolated from the venom of Agkistrodon Contortrix. Specific profiles of thrombin generation corresponding to each type of thrombophilic risk factor were analysed. Receiver-operating characteristics (ROC) curves analysis was performed to determine relevant cut-offs for the identification of patients who need further testing (negative predictive value, 100%)
Bouaziz, Borji Lobna Nguyen Philippe. "Les gènes de prédisposition à la maladie thromboembolique veineuse dans une population tunisienne". S.n. : S.l, 2006. http://scdurca.univ-reims.fr/exl-doc/GED00000301.pdf.
Testo completoTitre provenant de l'écran-titre. Bibliogr. p.110-155.
Lanoy, Léonard Fisch Alain. "Maladie veineuse thrombo-embolique et voyage aérien de courte durée réalités et perspectives /". Créteil : Université de Paris-Val-de-Marne, 2009. http://doxa.scd.univ-paris12.fr:80/theses/th0512111.pdf.
Testo completoBijaoui, Alexandra. "Intérêt du dosage des D-dimères dans le diagnostic de la maladie thromboembolique". Paris 5, 1998. http://www.theses.fr/1998PA05P126.
Testo completoAl, Frouh Fadi. "Analyse des facteurs de risque de maladie thromboembolique veineuse (MTEV) chez les femmes sous contraception oestroprogestative". Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0663/document.
Testo completoThe aim of our first study was to identify the genetic and environmental determinants of venous thromboembolism (VTE) risk in a large sample of women using combined oral contraceptives (COC). A total of 968 women with a personal history of VTE during COC use were compared with 874 women under COC, but no personal history of VTE. After adjustment for confounding factors, the main environmental determinants of VTE were smoking odds ratio (OR = 1.65) and a body mass index greater than 35 kg.m-2 (OR = 3.46). In addition, severe hereditary thrombophilia (OR = 2.13) and non-O blood groups (OR = 1.98) have been shown to be important genetic risk factors for VTE under COC. First-degree family history of VTE predicts thrombophilia poorly. In conclusion, this study confirms the influence of smoking and obesity and for the first time the impact of ABO blood group on the risk of VTE in women under COC It also confirms the low sensitivity of the family history of VTE to detect hereditary thrombophilia. The purpose of the second study was to study, in COC users, the impact of newly identified genetic polymorphisms by genome-wide as associated with the risk of VTE in the general population. Nine polymorphisms on the KNG1, F11, F5, F2, PROCR, FGG, TSPAN15 and SLC44A2 genes were genotyped in a sample of 766 patients and 464 controls in the PILGRIM study. Only the rs2289252 polymorphism on the F11 was significantly associated with the risk of VTE. The presence of the F11 rs2289252-A allele was associated with an increased risk of VTE (OR = 1.6). In addition, the combination of the rs2289252-A allele and the non-O blood group was associated with an OR risk of 4
Ozgurcan, Turhan Wahl Denis. "Bilan d'activité de la coordination du CHU de Nancy sur la Maladie Thromboembolique Veineuse évaluation de la période d'avril 2002 à avril 2005 /". [S.l.] : [s.n.], 2006. http://www.scd.uhp-nancy.fr/docnum/SCDMED_T_2006_OZGURCAN_TURHAN.pdf.
Testo completoCESCA, ROBERTON NICOLE. "Interet de la rheoplethysmographie par occlusion veineuse dans le diagnostic des complications thrombo-emboliques chez le blesse medullaire : a propos de 32 patients". Angers, 1990. http://www.theses.fr/1990ANGE1114.
Testo completoGalanaud, Jean-Philippe. "Les thromboses veineuses méconnues des membres inferieurs : thromboses veineuses profondes distales et thromboses veineuses superficielles". Thesis, Montpellier 1, 2011. http://www.theses.fr/2011MON1T027.
Testo completoBackground: Though they represent the majority of all lower limbs thromboses, isolated distal deep-vein thrombosis (DVT) (without symptomatic pulmonary embolism (PE)) and isolated superficial vein thrombosis (SVT) (without DVT or PE) have been poorly studied. Their clinical significance and management are under debate.Methods: Data from epidemiological multicenter prospective studies OPTIMEV, POST, RIETEResults and comments: Isolated distal DVT: Distal and proximal DVTs exhibit a different risk factor profile, the latter being more associated with chronic risk factors. Three-month mortality of distal DVT patient is lower than that of proximal DVT ones but is higher than that of controls. This evidences that distal DVT is a clinically significant finding. Differences in population profile and outcomes suggests that the benefit/risk ratio of anticoagulant treatment is not similar. Data from proximal DVT clinical trials should no longer be extrapolated to distal DVT.Isolated SVT: In case of SVT the risk of concomitant DVT is high. A compression ultrasonographic exam should be performed and at least explore the whole deep venous system of the affected limb. Male gender and history of DVT/Pulmonary embolism are independent predicators of recurrence. Some SVT can be safely treated without anticoagulants. On contrary, in patients with cancer or a sapheno-femoral junction involvement, the risk of deep venous recurrence is high even upon full therapeutic dose of anticoagulants
Lepaux, Dominique-Jeanne. "Amélioration de la qualité en milieu hospitalier : concepts, méthodes et application à la prévention de la maladie thromboembolique veineuse". Nancy 1, 1999. http://www.theses.fr/1999NAN19906.
Testo completoThe objective of this work was to investigate whether clinical audit was applicable in various settings. We have shown that clinical audit was adequate to improve quality of clinical practice when evidence-based guidelines were available. This was the case for deep venous thrombosis prophylaxis in surgical patients. On the other hand, for medical patients, controversial guidelines that are not based on a high level of evidence did not allow clinical audit to be performed. However, we suggest that quality improvement is possible by the means of problem-solving. To improve daily practice, further research with rigorous methodological patterns (i. E. Epidemiological surveys and/or clinical trials which could eventually lead to evidence-based guidelines) is needed. Our research was conducted using sequences of clinical audit or implementation of practice surveys, critical review of the literature and redesign of quality improvement methods
Hénaff, Séverine Kevorkian Jean-Philippe. "Cinétique des D-dimères au cours de la maladie thromboembolique veineuse implication dans la stratification du risque de récidive /". Créteil : Université de Paris-Val-de-Marne, 2006. http://doxa.scd.univ-paris12.fr:80/theses/th0243609.pdf.
Testo completoPinède, Laurent. "Le traitement de la maladie thromboembolique veineuse des membres inférieurs : durée optimale de prescription des anticoagulants oraux : essai contrôlé multicentrique DOTAVK". Lyon 1, 2000. http://www.theses.fr/2000LYO1T010.
Testo completoAnguelov, Antonio. "Les D-dimères dans l'exclusion de la thrombose veineuse profonde en gériatrie". Paris 13, 2004. http://www.theses.fr/2004PA130024.
Testo completoBosson, Jean-Luc. "La delta équivalence thérapeutique : le cas des grands échantillons : exemple de la maladie thrombo-embolique veineuse". Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE19004.
Testo completoThereaux, Jérémie. "Chirurgie bariatrique, hypercoagulabilité et maladie thromboembolique veineuse : explorations à partir d'une étude de cohorte locale et d'une étude de cohorte nationale". Thesis, Brest, 2017. http://www.theses.fr/2017BRES0005.
Testo completoIntroduction: Obese patients are known to be in an in vitro and in an in vivo hypercoagulable state relative to normal-weight patients. Studies focusing exclusively on morbidly obese patients are lacking. Our study aimed to identify markers of enhanced coagulability, to compare its evolution one year after bariatric surgery (BS) and to determine risk factors of venous thromboembolism (VTE) within 90 postoperative days. Methods: All patients scheduled for bariatric surgery (BS) between September 1, 2014 and January 31, 2016 in Brest University Hospital were eligible for our prospective local study. In vitro coagulation was assessed using thrombin generation (TG) tests (Endogenous thrombin potential (ETP)). Data on all patients undergoing BS in France from 1st January 2012 to 30 September 2014 were also extracted from the database of the French national health care (SNIIRAM) to determine the rate of VTE in the 90 days after surgery. Results: One hundred and two patients were included in our study assessing TG. Risk factors for enhanced TG (ETP in the 4th quartile) were increased total cholesterol level (Step=1mmol/l) (2.6 (1.2-5.4); P =0.01) and increased fibrinogen level (Step=1g/l) (2.2 (1.1-4.5); P=0.03). At 12 postoperative months, we found a significant lower ETP (%) (111 (96-129) vs. 84 (72-102 P<0.001)), fibrinogen level (g/l) (4.2±0.8 vs. 3.6±0.8; P<0.001)) and a non-significant trend for lower total cholesterol level (mmol/l) (4.8±0.8 vs. 4.6±1.0; P=0.08). After extraction of the SNIIRAM database, 110,824 patients were included with a rate of VTE of 0.51% (90 post-operative days). Main risk factors for postoperative VTE were (p<0.001): history of VTE (6.41 (4.50-9.14)), postoperative complications (9.23 (7.30-11.68)), heart failure (2.45 (1.48-4.06), open approach (2.38 (1.59-3.45)), BMI ≥ 50 kg/m² (1.67 (1.28-2.18)), sleeve gastrectomy (2.02 (1.39-2.93)) and redo procedure (1.37 (1.10-1.72)). Conclusions: Our study highlights the role of total cholesterol and blood inflammatory marker levels in enhancing TG in morbidly obese patients and shows a decrease of TG at 12 months after BS. The risk of postoperative VTE after BS is low depending on the individual risk level
Chalayer, Emilie. "Myélome multiple et maladie thrombo-embolique veineuse : aspects épidémiologiques, économiques, physiopathologiques et pharmacologiques". Thesis, Saint-Etienne, 2015. http://www.theses.fr/2015STET007T/document.
Testo completoThe association between multiple myeloma and venous thromboembolic disease is well established. This incidence in myeloma is on average from 10 to 20%. It appears to be higher in newly diagnosed myeloma and immunomodulatory drugs such as thalidomide might significantly increase the risk. However, the risk of thrombosis due to these treatments is not yet well defined. First, we performed a review of these diseases in order to delimit the field of this study through a literature review. Then, we evaluated the incidence of venous thromboembolic disease in patients with myeloma and treated with immunomodulatory, identified the thrombotic risk factors and evaluated the thrombotic risk assessment based on the physicians choice, through an observational, multicenter, prospective French study. Moreover, we performed the medico-economic analysis of the only randomized trial conducted to date on the thrombophylaxis in patients with multiple myeloma treated with thalidomide in the first line of chemotherapy. This analysis showed a gain in quality of life associated with significant cost savings in the prevention of thrombosis by aspirin rather than heparin. Finally we performed two medical studies using thrombin generation test, a global assay that measures the overall tendency of a plasma sample to form thrombin. The first study was conducted to predict patients who will have thrombosis. The second is performed to know if a heparin resistance with the usual doses in this pathology, exists
Massoure, Pierre-Laurent. "Les thromboses veineuses profondes des membres supérieurs : 34 observations". Bordeaux 2, 1999. http://www.theses.fr/1999BOR2M116.
Testo completoLabarère, José. "Développement ascendant de recommandations pour la pratique clinique en situation d'incertitude scientifque : apport des arbres d'induction et application à la prévention de la maladie thrombo-embolique veineuse". Université Joseph Fourier (Grenoble), 2003. http://www.theses.fr/2003GRE19012.
Testo completoClinical practice guidelines are systematically developed statements to assist practitioner decisions about appropriate health care for specific clinical circumstances. When robust scientific evidence is lacking, clinical guidelines are derived from expert opinion. This leads to inconsistent guidelines which vary in their advice. This thesis reports the implementation of an ascending method of guideline development based on observational data in the case of prevention for venous thromboembolism. This method reduces the scientific uncertainty by extracting clinical decision rules from physician practice data. For this purpose, we used classification and regression tree methods. The accuracy of the clinical decision rules was illustrated by the rate of an outcome measure in the corresponding subsets of patients. This method reduces expert subjectivity in the process of development and increases the expected validity of the guidelines. Finally, we have demonstrated the impact of these guidelines on both physician practices and deep vein thrombosis, through a before-and-after study design
Broch, Hélène Kouri Dominique El. "Evaluation de la prise en charge de la maladie veineuse thromboembolique dans le service de Médecine Polyvalente du CHU de Nantes étude prospective sur 56 patients hospitalisés de novembre 2006 à juillet 2007 /". [S.l.] : [s.n.], 2007. http://castore.univ-nantes.fr/castore/GetOAIRef?idDoc=23186.
Testo completoTromeur, Cécile. "Etude des facteurs de risque cliniques de maladie veineuse thromboembolique chez les femmes : implication sur la réduction des risques liées à la stratégie diagnostique de l'embolie pulmonaire chez les femmes enceintes". Thesis, Brest, 2018. http://www.theses.fr/2018BRES0021/document.
Testo completoIntroduction : The diagnostic strategy for PE during pregnancy is uncertain due to the lack of high quality studies and the risk of radiation exposure with computed tomography pulmonary angiography (CTPA) and ventilationperfusion (V-Q) lung scan. The challenge is to validate diagnostic strategies, and to identify predictive factors to reduce the number of additional imaging tests with radiation exposure.First, we aim to identify pitfalls during the diagnostic strategy of PE (the D-dimer assay threshold, clinical probability scores, imaging) during pregnancy. Second, our objective was to compare the diagnostic efficiency of CTPA and (V-Q) lung scan during pregnancy.Third, our objective was to validate a diagnostic strategy wich reduces the number of imaging tests (adjustment of the D-dimer level on the clinical probability). Finally, the last objective was to set up a research program focused on the weight of the family history of MVTE, that may also reduce the need of additional tests. Conclusion : We identified an ongoing validation protocol with a new diagnostic algorithm in pregnant patients withPE suspicion ; Furthermore, identifying a D-dimer level adjustement as well as a family history of VTE can lead tomore effective diagnostic stragegies with less radiation exposure for pregnant women with suspected PE
Nicolas, Loïc Spicq Alain. "Évaluation en médecine générale des pratiques de prévention de la maladie thromboembolique veineuse pouvant survenir au décours d'un voyage en avion enquête téléphonique auprès d'un échantillon de médecins généralistes du Val-de-Marne /". Créteil : Université de Paris-Val-de-Marne, 2009. http://doxa.scd.univ-paris12.fr:80/theses/th0496736.pdf.
Testo completoThibord, Florian. "Variation génétique et plasmatique des microARNs : impact sur les paramètres biologiques de l’hémostase OPTIMIR, a novel algorithm for integrating available genome-wide genotype data into miRNA sequence alignment analysis A Genome Wide Association Study on plasma FV levels identified PLXDC2 as a new modifier of the coagulation process". Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS379.
Testo completoMicroRNAs (miRNA) are small non coding RNAs with an average size of 22 nucleotides, mainly known to regulate gene expression in the cytoplasm. These small RNAs are estimated to regulate the majority of human genes, and are potentially involved in several diseases. MiRNA sequences might contain genetic variants and can undergo post-transcriptional variations, which generate miRNA isoforms called isomiRs. In order to accurately detect and quantify miRNA expression, isomiRs as well as paralogous miRNAs must be accounted for. The optimiR pipeline developed during this project overcome these challenges by integrating genetic information and by implementing an original strategy based on local alignement. Sequencing data were obtained from the MARTHA cohort, which is composed of french unrelated patients who experienced venous thrombosis (VTE). Normalized expression of 162 miRNAs from 334 patients were used to analyze: 1) the genetic determinants of miRNA expression; 2) the association of miRNA expression levels with VTE recurence; 3) the correlations between miRNA expression levels and hemostatic traits. As a whole, these analyses allowed me to identify miRNAs of interest for the study of VTE and hemostasis
Gaboreau, Yoann. "Méthodologies d'aide à la décision chez le patient traité par anticoagulant oral dans une maladie thrombo-embolique à partir d'études observationnelles". Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALS002.
Testo completoThe long-term aim of this thesis is to provide physicians with a strategy for estimating the risk of haemorrhage in 2 types of population: those with atrial fibrillation and those with venous thromboembolism. This strategy is based on statistical evaluation models derived from cohort studies. The first part of this thesis was devoted to a review of the literature on the pathophysiological mechanisms surrounding thrombosis, embolism and atherosclerosis. The modes of action and evidence of clinical efficacy of oral anticoagulants were researched, analysed and compared. The results of the SCORE study conclude this first part. The second part focused on validating the use of haemorrhagic risk scores in a cohort of primary care patients, and then exploring other previously unidentified risk factors (CACAO study). The third part aimed to determine the role of Covid-19 in the occurrence of thromboembolic events, based on an ancillary study of a randomized controlled trial in primary care
Antoni, Guillemette. "Identification de facteurs génétiques modulant deux phénotypes intermédiaires de la maladie thrombo-embolique veineuse : les taux de facteurs VIII et von Willebrand : Intérêt de l’utilisation de différentes approches de recherche pangénomique". Thesis, Paris 11, 2012. http://www.theses.fr/2012PA11T019/document.
Testo completoThe Venous Thromboembolism (VTE) risk factors are environmental and genetic. The well established risk factors are anti-thrombin, protein C, protein S deficiency, Factor V Leiden and factor II mutation and ABO gene, with A1 and B allele increasing the risk of VTE. While an important part of VTE heritability remains unexplained, contemporary studies fail to discover new susceptibility genes with weaker effects. In order to increase the discovery power, I searched for genetic geterminism of two intermediary phenotypes of VTE : Factor VIII plasmatic activity (FVIII) and von Willebrand factor antigenemia (vWF)First, I performed a linkage study of FVIII and vWF from a sample of 5 large pedigrees (N=255). Four loci have been identified. One included ABO gene. I searched for candidate genes located in the others loci by studying in silico results from o Genome Wide Association Study (GWAS) of the VTE including 419 cases and and 1228 controls. témoins. Two candidate genes were identified : STAB2 et BAI3. Then I performed association studies of five SNPs in BAI3 with FVIII and vWF. One of them was associated to vWF (in a sample of 108 nuclear families and 916 VTE patients), and associated to VTE in two case-controls samples (respectively 916 cases and 801 controls, and 250 cases et 607 controls).Second, I performed a meta-analysis of three GWAS of FVIII and vWF from the same 5 pedigrees and two samples of VTE (N=972 and 570) adjusted on ABO blood group. No polymorphisms were significant after Bonferoni correction (p<10-7). Nevertheless, among 11 genes carrying polymorphisms with a p<10-5, interestingly was STAB2. Futhermore, this study allowed to confirm newly discoverd association with VWF, STXBP5 et STX2
Gaertner, Sébastien. "Impact des facteurs de risque cardio-vasculaire majeurs d'athérosclérose et du vieillissement sur la fonction endothéliale des vaisseaux fémoraux dans le risque de thrombose veineuse". Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAJ119/document.
Testo completoIdentification of risk factors for venous thromboembolism (VTE) is a major concern for the prevention of the disease and its recurrence. We have shown in humans that the cumulative cardiovascular risk factors (CVFR) for atherosclerosis were associated with unprovoked VTE, its severity and the risk of recurrence. Aging, CVRF and VTE risk factor, induced an endothelial dysfunction in the rat femoral vein involving cyclooxygenases (COX) associated with potential pro-thrombogenic prostanoids generation. In the young obese ZSF1 rat, cumulative CVRF induced early venous endothelial dysfunction related to COX-1 and 2. Omega-3 treatment in aging rats modulates arachidonic acid pathway leading to COX-2-mediated formation of less deleterious prostanoids, associated with a decreased thrombogenic risk, making omega-3 a potential adjuvant treatment for VTE
Hugon-Rodin, Justine. "La maladie veineuse thromboembolique : impact de la contraception hormonale estroprogestative Mechanisms in endocrinology: Epidemiology of hormonal contraceptives related thromboembolism. Eur J Endocrinol Sex hormone-binding globulin and thrombin generation in women using hormonal contraception First venous thromboembolism and hormonal contraceptives in young French women Combined hormonal contraceptives and first venous thrombosis in young French women: impact of thrombotic family history Type of combined contraceptives, factor V Leiden mutation and risk of venous thromboembolism: a case-only study". Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS151.
Testo completoCombined hormonal contraception (CHC) is the most widely used contraception in France in which venous thrombosis embolism (VTE) is the main deleterious effect. Best practice recommendations are published in order to guide prescribers.The better understanding of the biological changes associated with different types of CHC, the clinical characteristics of women with VTE, the place of family history of VTE (FHVTE) and for biological thrombophilia before prescribing a CHC constitute research paths that could potentially optimize the risk-benefit balance of CHCs. Finally, the impact of hormonal contraception use after a first episode of VTE remains rarely evaluated.This work was carried out both using biological data from hormonal contraception users (EDGAR study) and also using data from the French cohort study COREVE (COntraception and REcurrent Venous Event).This study included 3121 women under 45 at the time of their 1st episode of VTE. We were particularly interested in analyzing the characteristics of these women according to the type of contraception used, the prevalence of vascular risk factors and especially the FHVTE.The frequency of VTE episode associated with an inadequate CHC prescription varied from 8.8 to 25.9%. Moreover, using a case-only methodology, the interaction between the use of CHC and the presence of a mutation of the factor V Leiden on the risk of VTE differs significantly depending on the progestin combined of the CHCs
Hugon, Justine. "La maladie veineuse thromboembolique : impact de la contraception hormonale estroprogestative". Thesis, 2017. http://www.theses.fr/2017SACLS151.
Testo completoCombined hormonal contraception (CHC) is the most widely used contraception in France in which venous thrombosis embolism (VTE) is the main deleterious effect. Best practice recommendations are published in order to guide prescribers.The better understanding of the biological changes associated with different types of CHC, the clinical characteristics of women with VTE, the place of family history of VTE (FHVTE) and for biological thrombophilia before prescribing a CHC constitute research paths that could potentially optimize the risk-benefit balance of CHCs. Finally, the impact of hormonal contraception use after a first episode of VTE remains rarely evaluated.This work was carried out both using biological data from hormonal contraception users (EDGAR study) and also using data from the French cohort study COREVE (COntraception and REcurrent Venous Event).This study included 3121 women under 45 at the time of their 1st episode of VTE. We were particularly interested in analyzing the characteristics of these women according to the type of contraception used, the prevalence of vascular risk factors and especially the FHVTE.The frequency of VTE episode associated with an inadequate CHC prescription varied from 8.8 to 25.9%. Moreover, using a case-only methodology, the interaction between the use of CHC and the presence of a mutation of the factor V Leiden on the risk of VTE differs significantly depending on the progestin combined of the CHCs
Sevestre, Marie-Antoinette. "Réactualisation de modèles épidémiologiques et application à la maladie thromboembolique veineuse". Phd thesis, 2010. http://tel.archives-ouvertes.fr/tel-00558755.
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