Active clinical trials for "Hemorrhage"

To analyze the influence of early hematoma morphology on hematoma expansion, optimize the treatment plan for cerebral hemorrhage, and guide the treatment of patients with cerebral hemorrhage in combination with clinical practice.

Cerebral amyloid angiopathy (CAA) is a major cause of lobar intracerebral hemorrhage (ICH) in the elderly with high risk of recurrence. The investigators aim to determine the relationship between cortical superficial siderosis (cSS), a MRI hemorrhagic marker of CAA and the risk of symptomatic ICH recurrence in a multicentric prospective cohort of patients with acute lobar ICH related to CAA. The investigators hypothesize that patients with cSS have an increased risk of recurrent symptomatic ICH relative to those without cSS.

Introduction Aneurysmal subarachnoid hemorrhage (aSAH) is bleeding around the under surface of the brain caused by rupture of an aneurysm arising from a blood vessel. Stroke may occur in approximately one third of patients as a result of narrowing of the blood vessels around the brain, following aSAH. One theory as to why this may happen is because bleeding around the base of the brain damages particular cells (neurons) that control blood flow around the rest of the brain. These neurons may control blood flow by releasing a neurotransmitter called Acetyl Choline (ACh). Our hypothesis is that damage to these neurons may prevent the production of ACh, which then causes reduced blood flow and stroke if left untreated. By stimulating these neurons, we aim to investigate whether it is possible to improve the blood flow around brain and ultimately prevent strokes in patients following subarachnoid haemorrhage. Donepezil, a drug widely used in dementia, inhibits the brain's natural break down of ACh. We predict that by increasing the amount of Ach in these neurons, donepezil may improve blood flow to the brain, reducing the chance of developing stroke. Trial Protocol All patients admitted to St George's hospital with a confirmed aneurysmal subarachnoid haemorrhage between the ages of 18 and 85 years old will be invited to participate in the trial. The protocol has been designed to take place around the patients' aneurysm treatment, which is performed under general anesthesia (GA). Recruited participants will be anesthetized for their aneurysm treatment and then enter the study. All trial participants will have a Xenon CT scan under GA to assess brain blood flow prior to having treatment of their aneurysm. Patients randomized to donepezil treatment will receive a loading dose of 20mg via a feeding tube immediately after their Xenon scan. Patients in the control group will not receive the drug. All patients in the trial will undergo repeat Xenon perfusion scanning under GA between 3 and 4 hours after their first scan, which coincides with the completion of their aneurysm treatment. Those in the donepezil group will then receive a daily dose of 5 mg for a period of 21 days. All aspects of care other than those related to the trial will be the same as for any other subarachnoid haemorrhage patients. Patients (or their legal representative for those unable to consent) will be able to decline participation in the trial or withdraw at any point.

In patients treated with direct oral anticoagulants, bleeding events during or after tooth extraction can lead to unscheduled interruption of the antithrombotic treatment and a potential increased risk of thrombo-embolic events. Therefore, an optimal strategy to minimize bleeding events after tooth extractions is required. In this study, the investigators want to assess whether adding tranexamic acid mouthwash reduces the number of bleeding events in patients treated with direct oral anticoagulants and undergoing a tooth extraction.

The study aim is to determine if periodic online cognitive exercises (Lumosity) improve memory function in ruptured cerebral aneurysm patients with disabling baseline memory deficits within the first 24 months after rupture. Half of the subjects will be randomized to use Lumosity-designed online cognitive exercises and half will serve as an active control group performing online crossword puzzles.

Researchers are looking to learn more about future menstrual bleeding in women who have started using intrauterine contraception methods. "Intrauterine contraception" means that a device is inserted into a woman's uterus by her doctor. The device then releases a birth control treatment into the uterus. Researchers have found that when women use intrauterine contraception, its effects on the menstrual cycle can cause changes to how often and for how long women will bleed. This is one of reasons women may stop using their intrauterine contraception. So, the researchers in this study wanted to learn about a tool that can be used to predict future bleeding events. This tool was developed based on the results of previous clinical studies that researched menstrual bleeding. This tool is a smartphone application called MyIUS. This study will include about 3,000 women who have recently had intrauterine contraception inserted and who use the MyIUS app. There will be no visits with a study doctor in this study. After the intrauterine contraception has been inserted, the women will start to record any events of bleeding in the MyIUS app. After they have recorded events of bleeding for a total of 90 days, the MyIUS app will give a prediction of menstrual bleeding expected for the next 180 days. The women who sign the electronic informed consent form will continue to record their bleeding events for a total of 6 months. The researchers will then collect this information. They will use this information to find out how well the MyIUS app can predict future menstrual bleeding.

Antithrombotic therapy is the cornerstone of the management of patients with acute coronary syndrome (ACS), which result in lower risk of mortality and ischemic events. But, accompanied side effect of bleeding always causing worsens outcomes. Tools to evaluate risk/benefit ratio is useful in daily practice. The in-used scores, such as CRUSADE, are derived from retrospective studies, without all types of ACS and without long-term prediction. This project aims to establish a database of anti-thrombosis treatment and bleeding in five large centers in Beijing through the observational registry of ACS. With the database, establish a bleeding risk assessment system that can be used for all ACS patients and can predict the full course of antithrombotic treatment.

The primary purpose of this study is to evaluate the safety and efficacy of preoperative intravenous ferric carboxymaltose in patients with anemia undergoing hip or knee replacement

The effect of Tranexamic acid on blood loss, hemoglobin and transfusions in patients with pertrochanteric hip fractures. Tranexamic acid is a well known drug used in many types of surgery. The investigators wish to investigate if the use of tranexamic acid can reduce the peri- and post-operative blood loss in patients who undergo surgery with a short intramedullary nail, for a pertrochanteric hip fracture. An interim analysis was planned when reaching 60 inclusions. The interim analysis was conducted only on the primary outcome (TBL). A difference in TBL of no less than 500 ml was considered a reason to halt the study. The 0.001 level was chosen as a simple approach to this interim analysis from the Haybittle-Peto boundary

This trial is conducted in the United States of the America (USA). The aim of this trial is to evaluate the effectiveness of activated recombinant human factor VII to mitigate experimentally-induced bleeding in healthy volunteers treated with clopidogrel (Plavix®).