View clinical trials related to Heart Attack.
Filter by:The aim of this observational study is twofold. The primary hypothesis being tested is that initial(first) high sensitivity Tn <5ng/l (limit of detection) combined with an ECG with no ischaemic changes is superior as an accelerated diagnostic tool/strategy compared to TIMI score (<2), GRACE <75 and HEART score ≤ 3. (Hs tn T- Roche elecsys HS tn T) and also against HS troponin at the 99th percentile (<15ng/l with nonischaemic changes)- again all scored with initial (first tn ) only. The second aim is to directly compare the three established methods of risk stratifying patients (predicting risk in suspected heart attacks) namely, the Global Registry of Acute Coronary Events (GRACE), Thrombolysis in Myocardial Infarction (TIMI) and HEART score in the era of high sensitivity troponins performs best.
Major heart attacks are caused by a numerous factors, including sudden clot formation in a coronary artery leading to a blockage and heart muscle death. The clots are largely made of sticky clotting blood cells (platelets). A patient having a major heart attack is treated with emergency primary percutaneous coronary intervention (PPCI) where a wire and balloon are used to reopen the coronary artery and a stent (a slotted metal tube) is placed to keep the artery open. Aspirin, and one of two other antiplatelet drugs (prasugrel or ticagrelor) are given prior to PPCI to prevent further clots formation. Both antiplatelet drugs are taken in tablet form and in healthy stable patients these drugs take at least 30 min to 2 hours to exert an adequate effect. Often PPCI procedures are performed well within this timescale. It is possible that having a major heart attack limits the bodies ability to absorb the drugs also. In this study, patients with major or minor heart attacks will be given either prasugrel or ticagrelor as per licensed indications and guideline recommendations. A 15 ml blood sample will be taken at first balloon inflation to reopen the blocked artery, then after 20 minutes, 60 minutes, and 4 hours after taking the drugs. Each blood sample will be subjected to a variety of tests to determine antiplatelet drug activity. This study will identify which of the two agents used are working effectively during PPCI, given the very short timescales involved. It will also show if patients with major heart attacks absorb the drugs less well than patients with less severe heart attacks. In the future it might be that an intravenous agent will be more valuable in the setting of PPCI.
This is a simple registry of patients undergoing PCI at hospitals without surgery on-site who were participants in the CPORT-E project. The aim of the registry is simple data collection and reporting to respective State Departments of Health. The registry population consists of patients undergoing diagnostic cardiac catheterization for suspected CAD at hospitals without SOS and who require PCI.
The purpose of the study is to estimate the contemporary prevalence of cardiovascular diseases in the United Kingdom (UK) and to describe the incidence and prevalence of stroke, mini stroke (TIA), Heart Attack (MI), deaths and interventions repairs for carotids and occlusive arterial disease in a large population. This study will also allow us to obtain reliable information on the age- and sex-specific relevance of tobacco and alcohol consumption, obesity, diabetes and blood pressure as risk factors for different cardiovascular diseases. By following up a large group of participants for 5 years, we will be able to estimate the annual risk of stroke and other CVD events associated with asymptomatic carotid artery stenosis and atrial fibrillation.
Based on limited published epidemiological data, up to an alarming 1 in 50 surgical inpatients die within 30 postoperative days. Based on our own data from the B-Unaware (NCT00281489) and BAG-RECALL (NCT00682825) clinical trials, 30-day postoperative mortality among high-risk surgical patients is comparable to this at Barnes-Jewish Hospital, and 1-year mortality among high-risk surgical patients may be as high as 10%. Short- and intermediate-term postoperative mortality is therefore a pressing public health concern. Similarly, postoperative major morbidity - including delirium, stroke, myocardial infarction, atrial fibrillation, blood clots, renal dysfunction, wound infection, pneumonia, respiratory failure, loss of functionality, and chronic pain - occurs commonly and affects a substantial proportion of surgical patients, critically ill patients and patients undergoing procedures for chronic pain. Many factors associate strongly and independently with postoperative mortality and major morbidity: patient age, functional status, comorbid medical conditions, and duration and invasiveness of surgery, among others. It is a strategic priority to identify pre- and intraoperative risk factors that are subject to modification.
Use of MRI and DWI to diagnose cardiac scarring after heart attack.
Following myocardial infarct, cellular therapy is a potential approach to repopulate the injured myocardium, to treat heart failure and restore cardiac function. The purpose of this study is to assess the safety, feasibility and efficacy of intramyocardial delivery of selected autologous CD133+ bone marrow stem cells at the time of coronary artery bypass grafting in patients with chronic ischemic cardiomyopathy.
The primary aim of this study is to increase our understanding of care-seeking behavior surrounding heart attacks or acute coronary syndromes [ACS]. This study uses an internet based survey to ask individuals how they obtained medical care in the midst of a heart attack. At present, care-seeking delay among individuals stricken with a heart attack prevents them from obtaining the full therapeutic benefit of hospital based medical care in a timely manner to reduce the long term health consequences of a heart attack. By using a self-tailoring survey instrument the study attempts to take into consideration the complex social processes by which the individual and their family make decisions to seek medical care for symptoms of a heart attack. The study is designed to obtain a national sample of ACS care-seeking behavior in the United States.