Active clinical trials for "Thrombosis"

The primary objective of this study is to demonstrate that plasma concentrations of nucleosomes and free DNA differ between three groups: pregnant patients with complications typical of placental insufficiency or venous thrombosis (group P), healthy women (Group T1) and healthy pregnant women (Group T2).

Cancer patients are at increased risk of deep venous thrombosis and pulmonary embolism, collectively termed venous thromboembolism (VTE). Risk assessment scores for VTE in cancer patients have been previously developed by the groups of Khorana and Vienna CATS. However, routine thromboprophylaxis for ambulatory cancer patients based on these scores is currently not recommended. In the investigators prospective, observational cohort study, the investigators aim to identify cancer patients at high risk for VTE based on clinical characteristics, coagulation biomarkers and the coagulant activity of tissue factor bearing microparticles.

The purpose of this study is to compare the difference in thrombosis as a result of internal jugular (IJ) catheters versus peripherally inserted central catheter (PICC) lines. It is hypothesized that there will be a decreased rate of thrombosis in patients as a result of IJ catheters verses PICC lines.

This study is to further develop and optimise the design and manufacturing process of a handheld device to monitor and manage Warfarin (blood thinning anticoagulation drug) therapy. The device comprises of a handheld instrument and a disposable test strip and reports how blood coagulation is working in terms of standardised units called International Normalised Ratio (INR). A single drop of fresh whole blood and plasma will be added to the strip and the INR result displayed on the instrument. Blood samples are to be collected from patients attending a hospital based INR clinic who are on Warfarin Therapy. The samples are to be used in a series of experiments in the laboratory to test the Microvisk POC INR Monitors accuracy, precision, stability and robustness.

Patients with a history of blood clots are at risk of developing additional clots in the future. Doctors use a tool called a clinical decision rule to tell them how likely it is that a patient has a blood clot and if they should have further testing to look for the clot. This tool may cause doctors to over-diagnosis a recurrent clot because the symptoms may be left over from the previous clot. Correctly diagnosing a recurrent blood clot is very important since there are risks associated with both over-diagnosis and under-diagnosis. If a recurrent blood clot is missed (under-diagnosis) the patient is at risk of death from a clot in the lungs. If blood thinners are prescribed when they are not needed (over-diagnosis), the patient may have to take blood thinners for their lifetime and risk having serious bleeding.

Obesity if a health endemic problem over the entire world. Bariatric surgery is the best chance for those patients with morbid obesity to loss weight and to maintain the loosed weight. Metabolic surgery is the new name for bariatric surgery like sleeve gastrectomy and gastric by pass due to the recognized changes in the homeostasis of the hormonal secretion responsive to the hunger status. After sleeve gastrectomy we observe many patients with thrombus of the portal vein system. This phenomena may be attributed to changes in the portal flow due to devascularization of the great curvature of the stomach. The aim of the study is to compare the portal flow by intra-operative Doppler ultrasound before and after surgery of the two procedures as sleeve gastrectomy and gastric bypass, were the vascularization is not changed by the surgery.

Numerous studies have demonstrated excellent diagnostic accuracy of Compression Ultrasonography (CUS) performed by hospitals doctors, skilled and unskilled in Radiology. Recently, it was demonstrated that adequately ultrasonography-trained General Practitioners (GP) can perform reliable ultrasound to increase the speed and improve the quality of clinical management of various clinical conditions. To date, in the medical literature there are no studies that demonstrate the diagnostic accuracy of GP in performing CUS for the diagnosis of Deep Vein Thrombosis (DVT). Therefore, we plan to perform a prospective, multicenter, cohort study in which a large number of consecutive outpatients with symptoms or signs of DVT are subject to the CUS by the GP with the aim of evaluating the precision and the diagnostic accuracy compared to specialists in vascular ultrasound, which in this case will be the standard of reference.

Deep venous thrombosis is the presence of blood clots, usually in the legs that lead to either local problems or breathing problems if the clot moves to the lungs. This study is designed to assess both clinical conditions as well as common genetic factors that lead to more risk of deep venous thrombosis. Clinical conditions of venous thrombosis include: stroke, malignancy, and situations such as surgery, pregnancy, trauma, or travel.

Venous thromboembolism (VTE) is a serious preventable complication of gynecological surgery. High incidence of silent VTE before surgery seems attributable to the high incidence of VTE after surgery in ovarian cancer .so the aim of work is to detect silent venous thrombosis in gynecological patients suffering from pelvic masses using different imaging modalities .

Prevention and Prophylaxis (Thromboprophylaxis - ACT) of Cancer Associated Thrombosis (CAT) in High Risk Oncology Patients: ACT4CAT.