View clinical trials related to Hemorrhage.
Filter by:Disorders of platelet function are characterized by variable mucocutaneous bleeding manifestations and excessive hemorrhage following surgical procedures or trauma. Generally, most patients have mild to moderate bleeding manifestations with a prolonged bleeding time. Platelet aggregation and secretion studies using platelet-rich plasma (PRP) provide evidence for platelet dysfunction but are neither predictive of severity of clinical manifestations nor the molecular mechanisms. Glanzmann's thrombasthenia (GT) is a rare autosomal recessive genetic bleeding syndrome characterized by defects in platelet aggregometry. The clinical phenotype of patients with GT is variable. Some suffer from severe bleeding, while others have only mild bleeding. Some studies found bleeding severity in GT was influenced by the abundance and functioning of platelet receptors involved in aggregation and adhesion. In addition to a complete medical history, a GT diagnosis requires a comprehensive laboratory workup, including platelet aggregation analysis, and a confirmation by flowcytometry or western blotting with monoclonal antibodies that recognize the GPIIb/IIIa complex. Platelet flow cytometry is an emerging tool in diagnostic and therapeutic hematology. It is eminently suited to study the expression of platelet surface receptors both qualitatively as well as quantitatively. Aim of the study:- - Determine the role of flowcytometry as a quantitative measurement tool of platelets surface glycoproteins in patients with inherited thrombocytopathies and its correlation with bleeding severity of these patients. - To compare the efficacy, advantages and disadvantages between platelets flowcytometry and aggregometer in diagnosing various inherited thrombocytopathies.
The researchers are trying to reduce the need for blood transfusions in subjects having surgery that will involve the use of cardiopulmonary bypass. A unit of whole blood will be removed as part of their standard of care prior to going on cardiopulmonary bypass (CPB). This unit is given back to the subject post CPB. This has been shown to reduce the need for blood transfusion in patients.
The Tranexamic Acid group will receive an intravenous bolus of (10 mg/kg) in 100 ml of normal saline over 20 minutes after induction of anesthesia and before surgical incision. In the control group, patients will receive a placebo of 100 mL 0.9% normal saline. The primary endpoint is reduction in blood loss, while the secondary endpoint was the number of patients needing transfusion and occurrence of postoperative thrombotic complications (myocardial infarction, stroke, pulmonary embolism, renal failure, or bowel infarction) within 30 days after surgery.
This study aims to assess the 6- and 12-month venous thromboembolism (VTE) and bleeding incidence from the start of cancer diagnosis in a retrospective cohort of patients with esophageal cancer. Additionally, the predictive value of the Khorana score and several other VTE and bleeding prediction scores and risk factors will be evaluated.
The purpose of the study is to induce plasticity in corticospinal-motoneuronal synapses serving an intrinsic hand muscle of the hemiparetic limb in humans with stroke. Neurologically-intact controls are included to verify that an effect was present in absence of stroke. Outcome measures in controls also provide a reference point that help us to understand the size of the effect and mechanisms mediating the effect in the neurologically-intact system.
The purpose of the study is to induce plasticity in corticospinal-motoneuronal synapses serving an intrinsic hand muscle of the hemiparetic limb in humans with stroke. Neurologically-intact controls are included to verify that an effect was present in absence of stroke. Outcome measures in controls also provide a reference point that help us to understand the size of the effect and mechanisms mediating the effect in the neurologically-intact system.
To evaluate the efficacy and safety of Anti-VEGF instead of intraoperative fan-shaped photocoagulation in BRVO combined with vitreous hemorrhage.
This study evaluates the use of a lower INR target (1.5 to 2.5) in patients with a mechanical bileaflet heart valve in the aortic position. This study will inform physicians about whether a lower INR target will decrease the risk of bleeding or increase the risk of blood clot formation and stroke. These results have the potential to reduce the burden of bleeding in patients with a mechanical heart valve who require lifelong warfarin (Coumadin) treatment.
Tranexamic acid has been proposed and used for prevention and management of antepartum and postpartum hemorrhage.
The aim of this cross-sectional study is to evaluate the hidden blood loss in patients who underwent open radical hysterectomy and identity its risk factors.