238 Clinical Trials for Various Conditions
The purpose of this study is to the 6-month Venous Thromboembolism (VTE)-free rate in participants with advanced germ cell cancer at high risk of VTE who are receiving standard of care cisplatin-based chemotherapy and low-dose acetylsalicylic acid (ASA) and compare to relevant historical controls
Germ Cell Tumor, Testicular Cancer
This is an observational study in which data already collected from people with venous thromboembolism (VTE) due to sepsis (blood poisoning) are studied. These people were hospitalized in an intensive care unit (ICU) and may or may not have had disseminated intravascular coagulation (DIC). In this observational study, only observations are made without participants receiving any advice or changes to their healthcare. VTE is a condition that occurs when blood clots form in the veins, which can be dangerous. DIC is a serious blood disorder that can cause clots throughout the body, blocking blood flow. People who have sepsis are at a higher risk of developing both VTE and DIC. Researchers wanted to know if people who have sepsis developed DIC before developing VTE. To prevent VTE in people with sepsis, it is important to know how severe the sepsis is, how it progresses, and whether DIC is also present or not. In this study, researchers will assess patient data from a medical database in the United States (US). The main purpose of this study is to learn if there is a relationship between sepsis, DIC, and VTE. To do this, researchers will divide the participants with VTE due to sepsis into three groups as follows: * participants who were diagnosed with DIC based on the extent of blood clotting * participants who likely had DIC but it was not diagnosed * participants who did not develop DIC during the same hospital visit The researchers will collect the following information: * the number of participants who had VTE due to sepsis also had DIC * the change in participants' laboratory results and vital signs, such as heart rate and blood pressure, from the time their sepsis was diagnosed to the time their VTE and DIC were diagnosed The researchers will study the data collected between January 2007 and December 2021. The data will come from the participants' information stored in a database called the Optum VTE EHR which collects patient medical data from hospitals across the US. In this study, only available data from routine care are collected. No visits or tests are required as part of this study.
Sepsis, Venous Thromboembolism, Disseminated Intravascular Coagulation
While blood clots after major cancer surgery are common and harmful to patients, the medications to decrease blood clot risk are seldom used after patients leave the hospital despite the recommendation of multiple professional medical societies. The reason why these medications are seldom prescribed is not well understood. The main questions this study aims to answer are: * Does surgeon education paired with an electronic medical record based decision support tool improve the guideline concordant prescription of pharmacologic venous thromboembolism after abdominopelvic cancer surgery? * Does dedicated patient education regarding blood clots at the time of hospital discharge after abdominopelvic cancer surgery improve understanding of the risk of venous thromboembolism and adherence to pharmacologic prophylaxis? The investigators will study these questions using a stepped-wedge randomized trial where groups of surgeons will use a tool integrated to the electronic medical record to educate them on the individualized patient risks of blood clots after major cancer surgery and inform them regarding guidelines for preventative medicines. Utilization of the medications before and after using the tool will be compared. Patients will be administered a questionnaire assessing their awareness of blood clots as a risk after cancer surgery. For those prescribed medications to reduce blood clot risk after leaving the hospital, the questionnaire will evaluate whether they took the medications as prescribed. Survey results will be evaluated before and after implementation of education on blood clot risk at the time of hospital discharge.
Venous Thromboembolism, Pulmonary Embolism, Deep Vein Thrombosis, Cancer, Surgery
A new algorithm derived from only patient age and components of the complete blood count and basic metabolic panel can identify patients discharged from the hospital who may benefit from a blood thinner (called rivaroxaban) to decrease their risk of blood clots, and for whom the risk of bleeding is minimal. The purpose of this study is to evaluate the use of a pop-up alert, which will be seen by clinicians when a discharging patient has been identified as being someone for whom the risk of blood clots is high, but for whom bleeding risk is estimated to be low. The pop-up alert will be enabled in a sequential fashion for each group of hospitals in 1 month blocks. We will look to see if the pop-up alert changes the number of patients who receive rivaroxaban. We will also measure the outcomes of blood clots and bleeding among all discharging patients.
Venous Thromboembolic Disease, Pulmonary Embolism and Thrombosis, Deep Vein Thrombosis, Hospitalism
Venous thromboembolism (VTE) causes up to 100,000 deaths annually. Between 10%-30% of patients die within one month of VTE diagnosis, while survivors remain at increased risk for VTE recurrence or other complications like post-thrombotic syndrome or chronic pulmonary hypertension in the following decade. Trauma patients have many risk factors that predispose them to a VTE. During the first 48 hours after blunt trauma, patients are prothrombotic due to the release of procoagulant factors, have excessive thrombin generation due to extensive tissue and vascular injury, and have reduced circulation of endogenous anticoagulants like protein C.
Thromboembolism, Venous
In individuals with obesity, the optimal dosing and duration of venous thromboembolism (VTE) prophylaxis in settings representing acute medical illness or surgery is limited due to lack of randomized controlled trials (RCTs) focusing specifically on this population. Evidence suggests that in obese participants, both higher dosing and duration of VTE prophylaxis with Low Molecular Weight Heparins (LMWH) may be required to achieve a therapeutic effect similar to non-obese participants. This non-interventional study utilizes data already collected from a usual clinical practice setting in the Optum US clinical database, representing obese participants hospitalized with an acute medical condition or undergoing surgery receiving enoxaparin prophylaxis. Its aim is to compare the impact of the following enoxaparin prophylaxis strategies on the incidence of symptomatic VTE and major bleeding in the overall study population and prespecified subgroups: * High versus conventional dose * Extended versus conventional duration * Combined High-Dose and Extended-Duration versus Conventional-Dose and Conventional-Duration. The first date of enoxaparin prophylaxis will be the index date.
Venous Thromboembolism
Venous Thromboembolism (VTE), including deep vein thrombosis (DVT) and pulmonary embolism (PE), is associated with an increase in risk of mortality and long-term disability and is a major contributor to global disease burden. Participants hospitalized with an acute medical illness are at increased risk of VTE. This study a non-interventional study which analyzes data already collected in the Optum US clinical database. Its aim is to compare conventional versus extended duration prophylaxis with enoxaparin on the incidence of VTE and bleeding events in participants hospitalized for acute medical illness. The first date of enoxaparin treatment will be the index date.
Venous Thromboembolism
The purpose of this study is to assess outpatient treatment patterns following hospitalization for venous thromboembolism (VTE). VTE is a condition that occurs when blood clot forms in the vein. This is a retrospective study (assessments on events that have already occurred) of healthcare claims from databases. The study sponsors will assess healthcare claim records of patients treated with either apixaban or warfarin. Assessment includes treatment persistence, switch, and stopping therapy, along with recurrent VTE and bleeding.
Venous Thromboembolism
The purpose of this study is to determine if additional interventions will assist with decreasing the risk and/or severity of thromboembolism (clotting complications) in patients who have experienced a major traumatic event.
Trauma Injury, Thromboembolism, Venous Thromboembolism
The purpose of this study is to evaluate the health care resource utilization and costs associated with treating patients diagnosed with cancer and venous thromboembolism with apixaban or low molecular weight heparin. This is a retrospective database analysis of health care claims data. All-cause costs as well as costs associated with recurrent VTE, major bleeding, and clinically relevant nonmajor bleeding will be assessed.
Thromboembolism
Thrombosis is common and contributes significantly to morbidity and mortality in patients with cancer. At least 20% of patients with cancer develop venous thromboembolism (VTE) and another 5% will experience acute arterial thromboembolism (ATE) due to cancer and its treatment. Current guidelines recommend VTE thromboprophylaxis in high-risk outpatients. Thromboprophylaxis strategies are inadequate as 50% of high-risk patients on prophylaxis still develop a VTE, the rate of recurrent VTE is \~24% with a case fatality rate of 14.8%, and the incidence of major bleeding is \~13% with a case fatality rate of 8.9%. We and others have implicated platelets in both the pathogenesis of VTE as well as cancer growth and metastasis. To investigate a new biomarker of risk in patients with cancer, we propose a pilot study to determine whether quantification of platelet FcɣRIIa expression can discriminate risk of VTE and cancer progression. We chose platelet FcɣRIIa expression because we have found that quantifying platelet surface expression of FcγRIIa identifies patients at high and low risk of thrombotic arterial events. Thus, we hypothesize that elevated platelet expression of FcγRIIa will identify patients with cancer who are greater risk of VTE as well as cancer progression. The proposed studies leverage a clinical research program that was established in 2015 at the University of Vermont Cancer Center (Venous Thromboembolism Prevention in the Ambulatory Care Clinic \[VTEPACC\]) and will allow simultaneous access to research samples, thrombosis complications and cancer outcomes in order to achieve the following specific aims: 1) To determine whether platelet expression of FcγRIIa identifies cancer patients at high and low risk of VTE, and 2) To determine whether increased platelet expression of FcγRIIa is associated with a) advanced stage cancer at the time of enrollment and b) greater progression of cancer. Platelet reactivity is increased in patients with cancer and has been associated with VTE risk. Platelet expression of FcγRIIa can increase the risk of thrombosis by both increasing platelet reactivity and by promoting the procoagulant potential of platelets. In addition, platelets promote cancer by facilitating tumor vascularization, growth, and metastasis. FcγRIIa has been shown to be a key mediator of platelet secretion and cross-talk between platelets and tumor cells. Thus, we propose that increased platelet FcγRIIa expression will be linked to enhanced tumor growth and metastasis by facilitating cancer-tumor cell cross-talk and thereby the activation of platelets that leads to the release of platelet products. Identification of a biomarker capable of discriminating high and low risk of VTE will provide an important precision tool that could be combined with existing tools to guide therapy and improve outcomes. Results from aim 2 will provide key preliminary data in support of novel antiplatelet treatments to limit cancer progression.
Venous Thromboembolism
Glioma patients with history of venous thromboembolism (VTE) treated on low molecular weight heparin (LMWH) and who decided with their physician to convert to Apixaban (oral drug) will be enrolled into our study and will collect data regarding recurrent VTE and Intracranial hemorrhage and the incidence of these events.
Glioma, Malignant
Patients with end stage renal disease (ESRD) are at significantly increased risk of thrombosis and bleeding relative to those with normal renal function which makes anticoagulation particularly challenging. Further, ESRD patients undergoing initiation of anticoagulation for acute VTE are often kept in the hospital for heparin "bridging" which may lead to a protracted length-of-stay (LOS) and may place patients at risk for hospital-associated complications. The advent of direct oral anticoagulants (DOACs) has offered physicians choices in the management of venous thromboembolism (VTE). However, evidence suggests that rivaroxaban and dabigatran are associated with a higher risk of bleeding in ESRD patients. In contrast, research suggests that apixaban may be safer in patients with ESRD, and recent evidence suggests lower bleeding rates in ESRD patients treated for atrial fibrillation with apixaban compared to those treated with warfarin. However, to date, no large national cohort studies have examined the safety, effectiveness, and healthcare utilization of apixaban in patients with ESRD who have acute VTE. The investigators propose to use the Standard Analytic Files from the United States Renal Data System (USRDS) for years 2014 through 2018 to evaluate the safety, effectiveness, and healthcare utilization of ESRD patients initiated on apixaban compared to those initiated on warfarin (following heparin) to treat acute VTE.
Venous Thromboembolic Disease, Kidney Failure, Chronic
The study will evaluate the effectiveness of a novel, real-time risk prediction model for identifying pediatric patients at risk for developing in-hospital blood clots (or venous thromboembolism \[VTE\]) based on data easily extracted from the electronic medical record. The study will assess whether using the risk percentages for developing VTE derived from the model increases the number of high-risk patients screened by the pediatric hematology team, which may may lead to an overall reduction in the number of pediatric VTEs seen at Monroe Carell Jr. Children's Hospital at Vanderbilt.
Venous Thromboembolism, Pediatrics, Deep Vein Thrombosis, Pulmonary Embolism
Coronavirus disease 2019 (Covid-19) is now a leading cause of death among U.S. adults. In addition to profound respiratory and multi-organ failure, hypercoagulable states and venous thromboembolism (VTE) have been increasingly reported in patients with severe Covid-19. The aim of this study is evaluate the risk of VTE related to Covid-19 infection in a real-world community-based population.
Venous Thromboembolism, Covid19
This is a pilot study to determine the safety and efficacy of low dose aspirin for the prevention of venous thromboembolism among women with advanced ovarian cancer receiving neoadjuvant chemotherapy.
Venous Thromboembolism, Ovarian Cancer
Design: U.S.-based, single-center, randomized placebo-controlled trial. Brief Treatment Description: Low-intensity apixaban (2.5mg twice daily) for extended-duration secondary prevention of VTE after initial treatment for provoked VTE. Purpose: To establish the safety and efficacy of low-intensity apixaban versus placebo for extended prevention of recurrence after provoked VTE in patients with at least one persistent provoking factor. Population: Outpatients with provoked VTE with at least one persistent provoking factor. Enrollment: 600 subjects Randomization: 1:1 Clinical Site Locations: 1 center (Brigham and Women's Hospital) Study Duration: 36 months; enrollment period of up to 20 months with 12-month follow-up. Primary Safety and Efficacy Outcomes: Primary Safety Outcome: International Society on Thrombosis and Haemostasis (ISTH) major bleeding at 12 months. Primary Efficacy Outcome: Symptomatic, recurrent VTE, defined as the composite of deep vein thrombosis and/or pulmonary embolism at 12 months. Secondary Efficacy Outcome: The composite of death due to cardiovascular cause, nonfatal myocardial infarction, stroke or systemic embolism, critical limb ischemia, or coronary or peripheral ischemia requiring revascularization (major adverse cardiovascular events, including major adverse limb events) at 12 months. Follow-Up: Follow-up will consist of Electronic Health Record (EHR) review at 12-months from study enrollment. Interim Analysis: An interim analysis for the primary safety and efficacy outcomes will be performed when 300 subjects have completed 12-month follow-up.
Deep Vein Thrombosis, Pulmonary Embolism, Venous Thromboembolism
A study involving real-world database analysis to evaluate the hospital healthcare utilization and costs, and all-cause, major bleeding-, clinically relevant bleeding-, any bleeding-, and venous thromboembolism (VTE)-related hospital readmissions among hospitalized VTE patients treated with apixaban or warfarin, with or without low molecular weight heparin (LMWH)
Venous Thromboembolism (VTE)
Patients who have developed a venous thrombosis will receive apixaban to treat and prevent a secondary thromboembolism.
Venous Thromboembolism
Prospective, multicenter observational study, of the effectiveness of a standard of care protocol implemented to enhance home treatment of VTE. Study population will be selected as part of usual care as eligible for home treatment. Study personnel will travel to participating institutions to qualify the sites, deliver a Powerpoint® lecture to introduce the protocol, meet and train site principal investigators, emergency physicians and research personnel on the implementation of the protocol as part of usual clinical care, and data collection methods for a quality assurance registry with plans to use the data collected in this registry in future publications. Follow-up will be 30 days using medical records and/or telephone interview to assess for primary outcomes of bleeding or VTE recurrence.
Venous Thromboembolism
The proposed research seeks to provide insights on the contemporary epidemiology, treatment, and outcomes of VTE, including examining the uptake of new treatment strategies, the efficacy and safety of different anticoagulant options, and the impact of venous thromboembolism on patient-defined outcomes, such as quality-of-life, symptom burden, and treatment satisfaction. This information is crucial to helping clinicians and patients choose between various treatment options for venous thromboembolism in order to achieve the best possible balance between the risks, benefits, and impact on health.
Venous Thromboembolism, Anticoagulants and Bleeding Disorders
Comparison of Oral anticoagulants (warfarin, apixaban and rivaroxaban) for extended VEnous Thromboembolism.
Venous Thromboembolism
The purpose of this study is to determine the incidence of post-operative venous thromboembolism (VTE) in patients undergoing major esophageal resection for malignancy.
Venous Thromboembolism, Thoracic Surgery, Esophageal Cancer
'The TOP Study' is a prospective cohort study whose main objective is to develop better prognostic biomarkers and identify children at risk of adverse thrombotic outcomes very early in the course after an initial venous thromboembolic events (VTE). The study will compare biomarkers in children that develop poor VTE outcomes (such as recurrence, postthrombotic syndrome and post PE impairment ) after an initial VTE with those that do not develop such outcomes.
Venous Thromboembolism
Apixaban for the treatment of venous thromboembolism in patients with cancer: a prospective randomized open blinded end-point (PROBE) study
Venous Thromboembolism
The PREVENTER Trial aims to compare the use of perioperative pharmacologic prophylaxis (subcutaneous heparin) with intermittent pneumatic compression devices (IPCs) to the use of IPCs alone for the prevention of venous thromboembolism (VTE) after radical prostatectomy (RP).
Prostate Cancer, Venous Thromboembolism, Lymphocele After Surgical Procedure, Deep Venous Thrombosis, Pulmonary Embolism
This is a prospective, randomized vanguard trial of trauma patients admitted to the trauma surgery service at Intermountain Medical Center who are deemed to be at high risk for venous thromboembolism. Once identified and enrolled, subjects will be randomized to receive bilateral lower extremity duplex ultrasound surveillance versus no surveillance. The study will compare the two groups with regard to deep vein thrombosis, pulmonary embolism, and major and clinically relevant bleeding episode rates, both during the index hospitalization and at 90 days post-discharge.
Venous Thromboembolism, Deep Vein Thrombosis, Trauma, Multiple
Patients living with multiple myeloma (MM) have an increased risk of venous thromboembolism (VTE) due to the disease itself and the use of targeted therapies, including immunomodulatory drugs (IMiDs). Prevention of VTE has become a major management challenge during MM treatment. There is a paucity of data with respect to the non-vitamin K oral anticoagulants (NOACs) in the cancer population. However, the NOACs offer comparable efficacy but improved safety compared with warfarin. Apixaban has shown excellent safety and efficacy for treatment and prevention of recurrent VTE (1,2). The safety and efficacy of apixaban for primary prevention of VTE in MM patients has not been established. Aim #1: To quantify the 6-month rate of major and clinically relevant non-major bleeding in MM patients receiving IMiDs who are prescribed apixaban 2.5 mg orally twice daily for primary prevention of VTE. Hypothesis #1: The 6-month rate of major and clinically relevant non-major bleeding in MM patients receiving IMiDs who are prescribed apixaban 2.5 mg orally twice daily for primary prevention of VTE will be ≤3% (2). Although the MM population, in general, has a higher medical acuity than that of the previous large randomized controlled trials of apixaban, we will be selecting a stable population of MM patients who are appropriate for immunomodulatory therapy. Aim #2: To quantify 6-month rate of symptomatic VTE in MM patients receiving IMiDs who are prescribed apixaban 2.5 mg orally twice daily for primary prevention of VTE. Hypothesis #2: The 6-month rate of symptomatic VTE in MM patients receiving IMiDs who are prescribed apixaban 2.5 mg orally twice daily for primary prevention of VTE will be \<7% (3). Although additional therapies for MM such as dexamethasone and erythropoietin-stimulating agents may further increase the risk of VTE, the rate of incident VTE should be reduced to \<7% with apixaban.
Venous Thromboembolism, Multiple Myeloma
The Computerized Registry of Patients with Venous Thromboembolism (RIETE) is a multidisciplinary Project initiated in march 2001 and consisting in obtaining an extensive data registry of consecutive patients with venous thromboembolism. The main objective is to provide information on the Internet to help physicians to improve their knowledge on the natural history of thromboembolic disease, particularly in those subgroups of patients who are usually not recruited in randomized clinical trials (pregnant women, elderly patients, disseminated cancer, severe renal insufficiency, patients with contraindications to anticoagulation therapy, extreme body weight, etc), with the purpose of decreasing mortality, frequency of thromboembolic recurrences as well as bleeding complications and arterial events. As an additional objective RIETE is also aimed to create predictive scores that help physicians to better identify patients with high risk of presenting some of these complications. The primary parameters recorded by the registry comprise details of each patient's clinical status, including any coexisting or underlying conditions, and the type, dose, duration and outcome (during the first 3 months of therapy) of antithrombotic treatment. Study endpoints are clinically recognized (and objectively confirmed) recurrences of VTE, major and minor bleeding complications, and death.
Venous Thromboembolism
This is an event driven Phase 3, prospective, randomized, open-label, blinded endpoint evaluation (PROBE) parallel group study in subjects with confirmed VTE. This study is designed to evaluate the pharmacokinetics (PK) and pharmacodynamics (PD) of edoxaban and to compare the efficacy and safety of edoxaban against standard of care in pediatric subjects with confirmed VTE.
Venous Thromboembolism (VTE), Pulmonary Embolism, Deep Vein Thrombosis (DVT)