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AI · heart disease
Намерени 48 изпитвания за "heart disease" Стр. 1 от 3
Recruiting
New Heart Imaging Techniques to Evaluate Possible Heart Disease
Healthy Obesity Diabetes Healthy Volunteers +1

Background: \- Imaging tests, such as magnetic resonance imaging (MRI), can provide information about heart and blood vessels. The tests let doctors can see the amount of blood vessel narrowing and vessel wall thickness. This information may help diagnose and treat heart disease and other conditions that lead to heart attacks. Better MRI methods are needed to improve heart disease diagnosis, especially by avoiding the use of radiation. Researchers are testing new techniques to improve the quality of heart MRI, compared with more complex studies like catheterization or angiography. Objectives: \- To compare heart MRI techniques with other tests used to diagnose heart disease. Eligibility: \- People at least 18 years of age who either have or may have heart disease, or are healthy volunteers. Design: * Participants will be screened with a physical exam, medical history, and blood tests. * They will have an angiography to study the inside of blood vessels. This test is an x-ray study of the blood vessels. It will be done either separately or as part of a set of tests to diagnose possible heart disease. * Participants will have at least one and up to five MRI scans. The scans will involve different methods of studying the heart and blood vessels. Participants may also have a computed tomography scan to confirm the findings of an MRI scan. * No treatment will be provided as part of this protocol.

Начало: 06.07.2011 Край: 05.11.2030 Възраст: 18–100 г.
United States National Institute of Diabetes and Digestive and Kidney NCT01399385
Recruiting Phase 4
The Peri-OPerative COlchicine to Reduce Negative Events (POPCORN) Trial
Coronary Artery Disease

Heart disease remains the leading cause of death in Veterans. Inflammation in the arteries of the heart may increase the risk of cardiac death. Patients with heart disease undergoing major surgery are at increased risk of complications after surgery, including heart attack, stroke, and death. The proposed research seeks to better understand the role of inflammation in the damage to the heart and blood vessels after major surgery. This research also seeks to identify the potential beneficial role of a safe medication, colchicine, which has direct effects on inflammatory cells and has been used in the treatment of inflammatory diseases for more than 2000 years, on reducing the rate of complications after surgery. With its quick onset of action and excellent safety profile, colchicine may have the potential to reduce risk of heart injury, stroke, or death after major surgery.

Начало: 21.08.2023 Край: 30.04.2029 Възраст: от 18 г.
United States VA Office of Research and Development NCT05618353
Recruiting
Digital diagnoSis of Cardiac sOUNd in peDiatric Patients [DI-SOUND Study]
Cardiac Disease Auscultation of Heart Machine Learning

Neonatal screening procedures for potentially life-threatening congenital cardiovascular diseases (i.e., duct-dependent systemic or pulmonary circulation), currently implemented at the national level, rely primarily on cardiovascular physical examination performed by a neonatologist. More recently, this approach has been complemented by the assessment of hemoglobin oxygen saturation at both the upper and lower extremities (pre- and post-ductal saturation) in order to improve diagnostic sensitivity, although this practice has not yet been uniformly adopted nationwide. Converging evidence indicates that these screening strategies are affected by significant limitations in both sensitivity (failure to identify affected individuals) and specificity (false-positive findings in healthy subjects). These limitations are associated with substantial overall costs for the healthcare system. Failure to correctly identify affected neonates may result in increased morbidity and mortality, whereas overdiagnosis leads to unnecessary second-level diagnostic investigations and imposes a considerable psychological burden on families, who remain understandably anxious until diagnostic confirmation is achieved. The aim of the present research project (proof-of-concept study) is to develop a digital classifier capable to categorize heart sounds with commercially available digital stethoscopes into a binary classification system distinguishing physiological from pathological sounds. The derivation phase will be followed by a prospective validation phase, in which the classifier will be applied to assess its diagnostic performance. This phase will also evaluate the economic impact of the digital screening approach compared with standard practice. During the derivation phase, neonates with known cardiovascular status, as determined by prior echocardiographic assessment (including both healthy subjects and those with congenital heart disease), will be enrolled. Heart sounds will be recorded in a quiet environment under standard clinical conditions, without sedation. Digital recordings will be stored in WAV format and analyzed to develop a binary classification algorithm capable of distinguishing healthy from pathological cases. Following development, the classifier will be prospectively applied to a validation cohort of neonates undergoing conventional cardiovascular screening (clinical examination and pre- and post-ductal pulse oximetry), followed by classification using the digital tool under investigation. All participants will subsequently undergo confirmatory echocardiography. Diagnostic performance metrics, including sensitivity, specificity, positive and negative predictive values, and likelihood ratios, will be calculated for both the digital and conventional screening modalities. Furthermore, the number of missed pathological cases and the number of unnecessary second-level investigations resulting from false-positive findings will be used to define the economic benefit profile of the proposed screening strategy. Monte Carlo simulation techniques will be employed to extrapolate these findings at the national level, using ISTAT data on birth rates and disease prevalence. It is anticipated that the development of a digital classifier for the binary classification of neonatal heart sounds will be feasible. Moreover, it is expected that this tool will demonstrate superior diagnostic performance compared with current neonatal screening strategies, with beneficial implications not only for the accurate identification of affected and healthy neonates but also for reducing overall healthcare costs associated with missed diagnoses and inappropriate overdiagnosis.

Начало: 18.07.2024 Край: 01.01.2027 Възраст: 7–30 г.
Italy IRCCS Azienda Ospedaliero-Universitaria di Bologna NCT07542509
Recruiting Phase 3
ARTEMIS - A Research Study to Look at How Ziltivekimab Works Compared to Placebo in People With a Heart Attack
Cardiovascular Risk Acute Myocardial Infarction (AMI)

The research study is being done to see if ziltivekimab can be used to treat people who were admitted to hospital because of a heart attack. Ziltivekimab might reduce development of heart disease, thereby preventing new heart attacks or strokes. Participants will either get ziltivekimab (active medicine) or placebo (a dummy medicine which has no effect on the body). Which treatment participants get is decided by chance. The chance of getting ziltivekimab or placebo is the same. The participant will need to inject the study medicine into a flat skin surface in there stomach, thigh, or upper arm once every month. Ziltivekimab is not yet approved in any country or region in the world. It is a new medicine that doctors cannot prescribe. The study will last for about 2 years.

Начало: 25.06.2024 Край: 14.12.2026 Възраст: от 18 г. Treatment
Argentina, Australia, Brazil +20 Novo Nordisk A/S NCT06118281
Recruiting Phase 3
EASi-KIDNEY™ (The Studies of Heart & Kidney Protection With BI 690517 in Combination With Empagliflozin)
Kidney Disease, Chronic

This study is open to adults with chronic kidney disease at risk of progression. People with and without type 2 diabetes can take part in this study. The study is open to people who take other medicines called angiotensin converting enzyme inhibitors (ACEi) or angiotensin receptor blockers (ARB). People who already take empagliflozin or any other sodium-glucose cotransporter-2 inhibitor (SGLT2i) can also join. The study is also open to people who currently do not take any of these treatments. The purpose of this study is to find out whether a medicine called BI 690517 helps people with chronic kidney disease when taken in combination with a study medicine called empagliflozin. Worsening of kidney function increases the risk for kidney failure, cardiovascular disease, and heart disease. This study has 2 parts. In the first part, participants get empagliflozin or placebo matching BI 690517 for at least 6 weeks. Participants continue taking ACEi or ARB throughout the study if such treatments are indicated. In the second part, participants are divided into 2 groups by chance. One group takes BI 690517 tablets and the other group takes placebo tablets. Placebo tablets look like BI 690517 tablets but do not contain any medicine. Participants take 1 tablet once a day in addition to empagliflozin for the duration of the study. The doctors document when participants experience worsening of their kidney disease, go to hospital due to heart failure, or die of cardiovascular problems during the study. The time to these events is compared between the 2 treatment groups to see whether the treatment works. The study continues until the required number of events have occurred which is about 3 to 4 years. During this time, participants visit the study site about 4 times within the first 6 months. Then they visit the study site every 6 months. At the visits, doctors regularly check participants' health, take blood and urine samples, measure blood pressure and weight, check kidney function, and take note of any unwanted effects.

Начало: 13.08.2024 Край: 30.08.2028 Възраст: от 18 г. Treatment
Argentina, Australia, Brazil +14 Boehringer Ingelheim NCT06531824
Recruiting
Closed-Loop Neurofeedback Targeting the Right Dorsolateral Prefrontal Cortex for Cardiac Autonomic Modulation in Coronary Artery Disease With Anxiety
Coronary Heart Disease (CHD) Anxiety Disorders

The goal of this clinical trial is to test whether real-time fNIRS-BCI neurofeedback targeting the right dorsolateral prefrontal cortex (right DLPFC), using active volitional control during a slow-wave auditory acoustic paradigm, can suppress cardiac sympathetic activity and improve autonomic regulation in right-handed patients with stable coronary heart disease (CHD) and comorbid DSM-5 anxiety. The main questions it aims to answer are: Does real neurofeedback, compared with sham, reduce baseline-corrected heart rate during the auditory stimulation window? Does real neurofeedback, compared with sham, increase HRV spectral power around 0.0167 Hz (1/60 Hz) and produce stronger suppression of right DLPFC activation? Does suppression of right DLPFC activation mediate the effect of group assignment on heart rate? If there is a comparison group: Researchers will compare the real neurofeedback group with the sham (non-contingent) feedback group, which uses identical audio and interface, to determine whether coupling feedback to right DLPFC activity yields autonomic benefits. Participants will: Complete eligibility screening in cardiology and psychiatry and provide informed consent; baseline demographics, medical history, vital signs, and medications are recorded (HAMA/HAMD used for eligibility only). Undergo a 3-day adaptation phase to practice active volitional self-regulation while viewing a real-time energy bar mapped to right DLPFC statistics; adaptation data are not analyzed for outcomes. Attend two formal sessions (Days 4-5), each with 15 blocks of 60 s (20 s rest + 40 s stimulus). The auditory stimulus is a 1 Hz amplitude-modulated pure tone at approximately 60 dB; 10-second white-noise bursts are randomly embedded within the 40-second window. During the stimulation period, participants receive real or sham feedback on right DLPFC activation and act to push the energy bar below an unlabeled threshold line using active volitional strategies. Undergo synchronous fNIRS (HbO) and 3-lead ECG (1,000 Hz) recording throughout; online processing and rendering performance metrics are logged; adverse events are monitored and managed per protocol.

Начало: 19.11.2025 Край: 21.08.2026 Възраст: от 18 г.
China Shenyang Medical College NCT07238920
Recruiting
Use of Artificial Intelligence-Guided Echocardiography to assIst cardiovascuLar Patient managEment
Heart Failure Valve Heart Disease

Heart Failure and valvular heart disease are disproportionate problems in rural and remote Australia (RRA). Echocardiography is the best imaging investigation, and essential for management, but access to this essential test shows huge geographic variations, primarily because of dependence on expert acquisition. This trial seeks to demonstrate the effectiveness of artificial intelligence-based echocardiography for triage and management of patients with known or suspected heart disease in RRA.

Начало: 24.02.2023 Край: 30.06.2026 Възраст: от 45 г. Diagnostic
Australia Baker Heart and Diabetes Institute NCT05558605
Recruiting
DeBakey Cardiovascular Magnetic Resonance Study
Cardiovascular Diseases

While advancements in cardiac magnetic resonance (CMR) have improved image quality, it is unclear how these improvements are connected to the clinical evaluation of individuals with cardiovascular disease. The aim of this large prospective registry revolves around 4 key principles: 1) utilize CMR to gain additional pathophysiologic insights into cardiovascular disease, 2) understand how CMR compares to alternative cardiovascular diagnostic modalities, 3) determine how CMR affects clinical management decisions, and 4) establish a link between CMR findings and long term prognosis in patients with known or suspected cardiovascular disease. The ultimate aim is to utilize CMR to improve patient outcomes. CMR techniques to be studies include function, fibrosis, and flow. Focus areas include valvular heart disease, ischemic heart disease, cardiomyopathies, and vascular disease.

Начало: 01.04.2008 Край: 01.04.2058
United States Dipan Shah NCT04281823
Recruiting
Evaluation of the BMPR2-Activin Signaling Pathway in Group II Pulmonary Hypertension.
Pulmonary Hypertension Due to Left Heart Disease Pulmonary Hypertension (PH) Heart Failure

Previous data from our group showed reduced BMPR2 isoform A in pulmonary hypertension associated with left heart disease (PH-LHD) of valvular origin. Focusing on dysregulation of the BMPR2-activin pathway, a key regulator of vascular homeostasis, this project uses a multimodal approach combining molecular biology, advanced cardiac imaging, and histology. Its aim is to determine the role of the BMPR2-activin pathway in the development and regression of PH-LHD. We will conduct a prospective observational study with 1-year follow-up in 150 heart failure patients of different etiologies undergoing hemodynamic assessment. Clinical parameters, biomarkers, molecular profiles, and hemodynamic/echocardiographic variables will be analyzed. A nested substudy in 40 heart transplant candidates will include thoracic CT for vascular morphometric analysis and histological correlation in explanted hearts versus healthy controls. We will also assess reversibility of vascular remodeling one year after transplantation. Results may redefine PH-LHD classification, enable phenotypic precision-medicine models, guide targeted therapies such as activin inhibitors, and refine transplant criteria in combined pulmonary hypertension.

Начало: 01.11.2025 Край: 31.12.2028 Възраст: от 18 г.
Spain Hospital General Universitario Gregorio Marañon NCT07537517
Recruiting
Reducing Cognitive Impairment by Management of Heart Failure as a Modifiable Risk Factor
Heart Failure Cognitive Impairment Dementia Left Ventricular Dysfunction +2

This study will test the feasibility and effectiveness of an innovative model of care for cognitively impaired patients with heart failure. This program aims to improve cognition, reduce dementia risk and cardiovascular events, and will be supported by innovative digital technology for wide scale rollout and implementation. Findings from this research will transform the way healthcare is delivered to cognitively impaired patients with heart disease who have a very high risk of developing dementia.

Начало: 01.07.2024 Край: 01.07.2026 Възраст: от 18 г. Prevention
Australia Baker Heart and Diabetes Institute NCT06088212
Recruiting
A Pragmatic Clinical Trial of the WE BEAT Well-Being Education Program in Adolescent Congenital Heart Disease: WE BEAT CHD Study
Patient-Reported Outcome Measures (PROMs) Pragmatic Trial Adolescent Congenital Heart Disease Resiliency-building Intervention +2

The goal of this pragmatic clinical trial is to learn if the WE BEAT program, a 5-week group-based online wellbeing and skill-building program, can help teens with congenital heart disease (CHD) improve their ability to handle stress. The main question it aims to answer is if participants who receive the WE BEAT program become more resilient (the ability to bounce back from from tough times or recover from something difficult) and have better quality of life compared to participants who receive usual care. The study also aims to learn if there are connections between participant-reported psychosocial data (such as resilience, feelings about one's life and one's physical, mental, and social wellbeing) and clinical outcomes. Eligible participants who are 12-17-year-old will be in the study for about 6 months and be randomized to receive either the WE BEAT program or usual care. Following completion of the primary WE BEAT intervention at Week 5, intervention arm participants will be randomized to a single-session booster session (occurring at Week 18) vs no booster session. The booster session will be provided in a similar format to the WE BEAT program. A review of all modules/skills introduced in the program will be provided. All participants will complete 4 sets of online surveys and give 3 hair/saliva samples at different timepoints. Some participants may volunteer to give optional blood and urine samples.

Начало: 01.04.2026 Край: 01.06.2029 Възраст: 12–17 г.
United States Carelon Research NCT07525843
Recruiting
The Prevalence, Disease Burden and Prognosis of COPD in Patients With Cardiovascular Diseases
Cardiovascular Diseases

This is a multi-center, prospective, and interventional study conducted in 3 types of cardiovascular diseases (CVD) subjects , including 3 cohorts which are patients with newly or previously diagnosed coronary heart disease ( CHD), atrial fibrillation ( AF) and chronic heart failure (CHF).

Начало: 28.11.2025 Край: 31.12.2026 Възраст: от 40 г.
China AstraZeneca NCT06909773
Recruiting
Closed-Loop Neurofeedback Targeting the Left Dorsolateral Prefrontal Cortex for Cardiac Autonomic Modulation in Coronary Artery Disease With Anxiety
Coronary Heart Disease (CHD) Anxiety Disorders

The goal of this clinical trial is to test whether closed-loop fNIRS-BCI neurofeedback(NF) targeting the left dorsolateral prefrontal cortex(DLPFC) can reduce cardiac autonomic arousal, indexed by baseline-corrected heart rate(HR) under cold-induced pain stress, in adults with stable coronary heart disease(CHD) and comorbid anxiety. The main questions it aims to answer are: Does real left DLPFC neurofeedback, compared with sham neurofeedback, lead to a greater reduction in baseline-corrected HR during the cold-induced pain stimulation window? Does real neurofeedback produce stronger volitional upregulation of left DLPFC activation and higher inter-hemispheric synchronisation between left and right DLPFC than sham neurofeedback? Are changes in baseline-corrected HR statistically associated with, and partly mediated by, changes in left DLPFC activation or DLPFC inter-hemispheric synchronisation? What adverse events(AEs) occur during adaptive training and the formal experimental session, and do AE rates differ between the two groups? Researchers will compare a real neurofeedback group with a sham neurofeedback group to determine whether targeting the left DLPFC via closed-loop fNIRS-BCI yields superior modulation of cardiac autonomic responses and prefrontal activation patterns in CHD patients with anxiety. Participants will: undergo cardiac and psychiatric screening to confirm stable CHD, DSM-5 anxiety disorder, and other eligibility criteria; attend three adaptive training sessions(days 1-3) with fNIRS-BCI neurofeedback targeting the left DLPFC, combined with slow-wave auditory stimulation and mild cold-water exposure, while ECG is recorded; on day 4, complete one formal experimental session consisting of 15 blocks of cold-induced pain stimulation and slow-wave auditory stimulation, with simultaneous fNIRS and ECG recording, receiving either real or sham left DLPFC neurofeedback according to randomisation, and continuous monitoring for adverse events.

Начало: 23.11.2025 Край: 30.05.2026 Възраст: от 18 г.
China Shenyang Medical College NCT07244484
Recruiting
Radiotherapy vs Catheter Ablation for Ventricular Tachycardia in Structural Heart Disease
Ventricular Tachycardia Cardiomyopathies Arrhythmias, Cardiac Ventricular Arrythmia

The goal of this randomized clinical trial is to test the efficacy of stereotactic body radiation therapy (SBRT) in treating ventricular tachycardia (VT) in patients with advanced structural heart disease. The main questions it aims to answer are: * What is the efficacy of SBRT compared to catheter ablation (CA) in achieving a ≥ 75% reduction in VT burden at 6 months * What is the comparable safety profile of SBRT vs CA Researchers will compare SBRT and CA (standard of care).

Начало: 03.11.2025 Край: 20.12.2027 Възраст: от 18 г. Treatment
Australia Western Sydney Local Health District NCT06360939
Recruiting
HARP Mindfulness Study
Cardiovascular Diseases

This study was designed using the Multiphase Optimization Strategy (MOST) framework to determine whether two supplemental components increase the efficacy of a mindfulness-based cognitive therapy program delivered via telephone (MBCT-T) for psychological distress. Specifically, this study will test mindfulness booster sessions to follow a standard 8-week MBCT-T intervention, as well as website support in patients with heart disease and/or heart disease risk factors.

Начало: 15.05.2025 Край: 31.12.2026 Възраст: от 18 г.
United States NYU Langone Health NCT05841784
Recruiting
Tailoring Mobile Health Technology to Reduce Obesity and Improve Cardiovascular Health in Resource-Limited Neighborhood Environments
Obesity

Background: Heart disease is a leading cause of death. People can reduce their heart disease risk by exercising more. Mobile health technology may make people more successful at increasing their exercise. This includes things like physical activity monitors and smartphone apps. Objective: To find out if mobile health technology can increase physical activity. Eligibility: African American women ages 21-75 who: * Are overweight or obese * Live in certain areas near Washington, DC * Have a smartphone that can use the study app Design: At visit 1, participants will * Answer survey questions. These may be about medical history, physical activity, and weight. They may also cover body image, health perception, and spirituality. * Have body size measured and get blood tests * Get a device to wear on the wrist. It will record physical activity and hours of sleep. * Learn how to download and use the study mobile app For 2 weeks, researchers will collect data about participants physical activity. Then participants will have a study visit with additional blood tests. All participants will get messages from the app that encourage exercise. Some participants will get data from the app about exercise near their home or work. Some participants may get face-to-face coaching. Participants may get wireless devices. These measure body weight, blood pressure, and blood glucose. Participants can measure these at home and upload the data to the app for the study. Participants will have visits after 3 and 6 months. They will repeat the visit 1 tests.

Начало: 21.06.2018 Край: 04.08.2026 Възраст: 21–75 г.
United States National Heart, Lung, and Blood Institute (NHLBI) NCT03288207
Recruiting Phase 2
Early Metabolic Effects of Antiretroviral Drugs in Healthy volUnteers: a Phase 2 Randomized Study
Healthy Volunteer Weight Gain Metabolic Effects Integrase Strand Transfer Inhibitors

Background: People with HIV take drugs to keep the amount of virus in their body low. One type of these drugs, called integrase strand transfer inhibitors (INSTIs), can cause weight gain over time. Weight gain can cause diabetes, heart disease, and other serious issues. Researchers want to understand how INSTIs cause weight changes. Objective: To characterize the change in plasma metabolite profile that 4 weeks of each treatment may induce in the absence of HIV infection Eligibility: Healthy people aged 18 to 55. Design: Participants will be screened in the outpatient clinic. They will have a physical exam and blood tests. They will have a nutritional assessment and tests of their heart function. Participants will be randomized to one of four oral treatments: Tenofovir Disoproxil Fumarate TDF/Viread, Tenovovir Alafenamide TAF/Vemlidy, Dolutegravir DTG/Tivicay, or both TAF and DTG taken together for 4 weeks. Participants will have a Day 0 visit for the Lead-In Baseline visit for an exam and blood tests and continuous glucose monitor placement. Participants will return in 2wks or Day 14/Wk 2 for a DEXA (dual-energy X-ray absorptiometry). DEXA is a kind of X-ray that measures body fat and bone density. Optional adiopse (fat) tissue biopsy in the abdomen, and optional microbiome specimen collections. Continuous glucose monitor changed. Oral once a day dose medication will be started with education. Participants will return in 2wks or Day 28/Wk 4 for exam, labs, and continuous glucose monitor changed. Participants will return in 2wks or Day 42/Wk 6 for final exam, labs, repeat DEXA scan, repeat adipose tissue biopsy, and microbiome specimen collections.

Начало: 29.04.2026 Край: 31.01.2030 Възраст: 18–55 г.
United States National Institute of Allergy and Infectious Diseases ( NCT05652478
Recruiting
Fontan Outcomes in Oligemia vs Plethora in Univentricular CHD
Congenital Heart Disease (CHD) Univentricular Heart

This prospective cohort study evaluates differences in clinical outcomes between pulmonary oligemia and pulmonary plethora in patients with cyanotic congenital heart disease and univentricular heart physiology undergoing staged palliation culminating in the Fontan procedure.Fifty-two patients will be classified into two groups based on pulmonary blood flow characteristics and followed for approximately 1.5 years after the Fontan procedure. Outcomes include mortality, morbidity, pulmonary hemodynamics, functional capacity, neurocognitive status, and quality of life.

Начало: 01.01.2025 Край: 01.06.2027
Indonesia Sisca Natalia Siagian NCT07535203
Recruiting
Activation and Function of Eosinophils in Conditions With Blood or Tissue Eosinophilia
Immune System Diseases Eosinophilia Helminthiasis Hypersensitivity +1

This study will investigate how, why and under what conditions eosinophils (a type of white blood cell) become activated and will examine their function in immune reactions. Eosinophil counts often rise in response to allergies, asthma, and parasitic worm infections. They can also go up in uncommon autoimmune conditions and, rarely, in association with tumors. Elevated levels of these cells is called eosinophilia. Usually, eosinophilia causes no apparent symptoms, but in rare cases there may be local swelling and itching, allergic lung problems, heart disease or nerve damage caused by the release of toxic substances in these cells into body tissues. Patients 1 to 100 years of age with eosinophil counts greater than 750/ml or an abnormal accumulation of eosinophils in the skin or body tissues may be eligible for this study. All participants will have a thorough medical history, physical examination and blood tests. Depending on the person's age and symptoms, other diagnostic tests may be done, including specialized studies of the eye, lungs, skin, bone marrow, nerves or heart. This is not a treatment study, and no experimental treatments will be offered. Patients who require treatment will receive standard medical care. Certain other procedures may be requested solely for research purposes. All participants will be asked to donate extra blood for laboratory studies investigating how immune cells and other immune substances in the blood act to stimulate a rise in eosinophils. In addition, some participants may undergo one or more of the following: * Annual Follow-up evaluations - Physical examinations and blood tests to evaluate changes in the patient's condition and eosinophil counts over time. * Bone marrow biopsy and aspiration will be recommended during the initial evaluation, and in certain patients at other times when it is important to look directly at the newly developing cells in the bone marrow. For this procedure an area of skin and bone is anesthetized with xylocaine (an anesthetic similar to that used by dentists), and a very sharp needle is used to sample the bone marrow for evaluation. Bone marrow biopsy and aspiration can have side effects of pain and/or bleeding into the skin and soft tissues at the site of the procedure. Rarely the area at the biopsy site can become infected, and is treated with antibiotics. * Genetic testing: Some of the blood drawn from you as part of this study will be used for genetic tests. Genetic tests can help researchers study how health or illness is passed on to you by your parents or from you to your children. Any genetic information collected or discovered about you or your family will be confidential. * Leukapheresis (only patients 18 years and older) to collect large numbers of certain cells - In this procedure, whole blood is collected through a needle placed in an arm vein. The blood circulates through a machine that separates it into its components. The white cells are then removed and the rest of the blood is returned to the body, either through the same needle used to draw the blood or through a second needle placed in the other arm.

Начало: 21.04.1997 Възраст: 1–100 г.
United States National Institute of Allergy and Infectious Diseases ( NCT00001406
Recruiting
Pragmatic Randomised Trial of High Or Standard PHosphAte Targets in End-stage Kidney Disease (PHOSPHATE)
Kidney Failure, Chronic Hyperphosphatemia

During end-stage kidney disease, clinical guidelines suggest reducing elevated phosphate levels in the blood. However, the effect of lowering blood phosphate levels on important patient-centred outcomes has never been tested. This trial will evaluate whether compared to high levels, lowering blood phosphate levels would reduce death or major events due to heart disease, improve physical health, and be cost-effective.

Начало: 10.12.2019 Край: 31.12.2028 Възраст: от 18 г. Treatment
Australia, Brazil, Canada +5 The University of Queensland NCT03573089
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