Active clinical trials for "Thrombosis"

This prospective cohort study will provide information about: characteristics of Rivaroxaban use in patients who are prescribed Rivaroxaban for the first time compared to patients who are prescribed Phenprocoumon for the first time, the occurrence of intracranial haemorrhage, gastrointestinal and urogenital bleeding, and the occurrence of non-infective liver disease.

The purpose of the study is to characterize the distribution and sources of variability in whole blood clotting time (WBCT) measurements in human blood collected from healthy volunteers by 5 different technicians.

A clinical trial to study the effects of dosage, infusion methods and complications of unfractionated heparin (UFH) treating acute progressive cerebral infraction was conducted. In this study, we observed the effects of four UFH treatments on 480 acute progressive cerebral infraction patients during from the 6th and the 72nd hour after the attack. It was concluded that the ultra-slow continuous intravenous infusion of UFH can significantly reduce the neurological deficit score of patients with progressive cerebral infarction, increase the cure rate, decrease the recurrence rate, and improve long-term quality of daily life. It is more effective than the treatment of intravenous infusion of low- molecular- weight UFH at once a day, and the risk of bleeding may not necessarily be increased.

Thromboembolic complications (TCs) are important causes of morbidity and mortality after pediatric cardiac surgery, resulting in longer hospital stay, increased risk of early and late post-surgical complications, early reoperation, neurologic and organ damage, and potentially death. The true incidence of blood clots in pediatric surgical patients is unknown. The overarching objective of this study is to further our understanding of TCs, including quantification, characterization and risk stratification. This study will ultimately allow the development of effective tools for prevention and early identification of TCs, rather than focusing on treatment alone.

Venous thromboembolism (VTE), including deep vein thrombosis (DVT) and pulmonary embolism (PE), is a common post-operative complication. The effectiveness of fondaparinux compared with other injectable anticoagulants in VTE following major orthopedic and abdominal surgery has been evaluated in database studies; however, the effectiveness of injectable anticoagulant medications following cancer-related surgeries in the practice setting has not been as well documented. The objective of this study is to analyze patient records from a national hospital database and compare the outcomes and costs between four types of injectable anticoagulant medications that were prescribed for the prevention of VTE following cancer-related surgery. This analysis will assess and quantify the outcomes, resource utilization, and cost of care for patients receiving fondaparinux, enoxaparin, dalteparin or unfractionated heparin. The outcomes of interest include the occurence of VTE, rates of major bleeds, medical resource utilization, and total costs (medical plus pharmacy). The source of data for this study is the Premier Perspective Database™. This hospital claims database links de-identified inpatient medical, pharmacy, and billing data from more than 500 hospitals. This study is a retrospective cohort study that uses propensity score matching to adjust for the differences between the numbers of patients treated with each medication.

The portal vein thrombosis (PVT) can complicate medical conditions like liver cirrhosis (LC), neoplasms, myeloproliferative diseases, thrombophilic genotypes, infections, inflammatory diseases, trauma and surgery. LC is an important predisposing disease and is responsible for about 20% of all cases. However, data regarding the PVT in cirrhosis are insufficient. Early studies have shown that, in absence of hepatocellular carcinoma (HCC), the PVT can occur in approximately 10% of cirrhotic patients. Most of studies are in support of a prevalence between 5 and 20% of patients with LC. A study in transplant recipients, has documented that in variable etiology cirrhosis, the PVT was present in 15.7% of patients, a higher percentage was found in patients with liver cancer (34.8%), while primary biliary cirrhosis (7.9%) and sclerosing cholangitis (3.6%) are less frequently complicated by PVT. The PVT development is due to stagnation in the portal circulation, but alterations in the sense of inherited or acquired pro-coagulant may favor its appearance. The causal association of PVT with bleeding and bowel infarction suggests that the PVT may reduce survival in cirrhosis, but data are lacking on this issue. It is also not known whether asymptomatic patients with PVT have a different survival compared to cirrhotic patients without PVT. Further studies should be conducted to clarify this issue. Likewise, prospective studies are needed to better identify risk factors predisposing to PVT in LC patients as well as to clarify the relationship between cirrhosis severity and PVT. The impact of PVT on the natural history of cirrhosis is an issue today still debated. The PVT not only favour life-threatening complications (gastrointestinal bleeding and mesenteric thrombosis) but could also contribute to a deterioration of liver function by reducing portal flow. Obtaining such information would be of crucial importance considering that the evidence of increased mortality related to PVT in liver cirrhosis may indicate the need for randomized controlled trials to clarify the potential effectiveness of anticoagulant therapy to improve the survival. To this purpose it's proposed to establish an Italian register of patients with cirrhosis. In the second phase of the project is planned a 2-years follow-up program in order to assess whether the PVT be an additional risk factor for mortality or deterioration of the natural history in patients with cirrhosis.

The purpose of this study is to examine the impact of cranioplasty on cerebral hemodynamic and blood flow as prognostic factor in patients receiving decompressive craniectomy for Head injuries, Subarachnoid haemorrhage, intra-cerebral haemorrhage, cerebral dural sinus thrombosis, malignant middle cerebral artery stroke.

Investigate, through a randomized, open, parallel and comparative, non-inferiority of heparin sodium produced by laboratory Hipolabor compared to heparin manufactured by APP in patients on hemodialysis due to renal failure, through the control of hemostasis, verified by formation of clot (fibrin) in the hemodialysis system and pharmacodynamic parameters (TTPA and Anti-Xa) during the use of heparin

The objective of the GRAVITAS trial is to determine whether tailored anti-platelet therapy using the Accumetrics VerifyNow P2Y12 assay reduces major adverse cardiovascular events after drug-eluting stent implantation.

Prospective clinical observational registry study including consecutive patients with clinical signs or symptoms due to in-stent restenosis (ISR) or definite (ARC criteria) stent thrombosis (ST). Study hypothesis: Initial Stent implantation quality (due to technique/problems) are possible major determinants of ST and ISR in real life practice. Both early, late, and very late ST, and ISR are important factors for long term outcome after initial stent implantation. Primary objective: To elucidate the possible cause(s) of thrombosis or restenosis after stent implantation in real life practice by clinical, angiographic and IVUS evaluation. Secondary objective: To describe the clinical manifestation [stable angina pectoris (AP), unstable AP, non-ST-elevation myocardial infarction (NSTEMI), or ST-elevation MI] of the index event (inclusion). To describe the characteristics of patient, lesion and procedure of the initial percutaneous coronary intervention (PCI). To describe the antithrombotic pharmacological therapy preceding the index event. To describe clinical outcome (death, MI, revascularization, CCS angina class) following treatment of the index event during 12 month follow-up. To describe safety of the IVUS procedure (product or procedural related complications/ malfunctions).