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Browse 7,313 clinical trials for heart disease. Find studies that match your criteria and connect with research centers.
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NCT01619098
Hospital readmissions are common, costly, and potentially preventable. They are also potentially responsive to health system interventions. However, it is uncertain which components of care transition interventions are efficacious, for which populations, and at what cost. This randomized controlled study is part of a larger project that will evaluate a three-tiered quality improvement (QI) intervention intended to reduce hospital readmissions within 30 days post-discharge from an urban safety net hospital that serves a racially and linguistically diverse population (the randomized controlled study evaluates Tier 3). Few studies have evaluated care transition interventions to reduce readmissions among low-income, diverse patient populations, and the accumulated evidence on the effects of these multi-faceted interventions on readmission rates has been inconclusive. This project will take advantage of a unique sequence of three QI innovations to reduce hospital readmissions implemented beginning in 2007 in an integrated safety net health care system. The "discharge-transfer" tiers are as follows: 1) Tier 1 includes a comprehensive, individualized home care plan (HCP) reviewed by the medical service floor nurse with the patient prior to discharge; 2) Tier 2 adds the electronic transmission of the HCP to the patient's primary care medical home where, on the business day following discharge, a Registered Nurse makes an outreach telephone call to the discharged patient to confirm comprehension of the HCP and to address medical questions or needs; 3) Tier 3 further adds a community health worker, the Patient Navigator, to participate in bedside discussions to develop rapport and learn about patients' home situations, weekly outreach calls to assess patients' needs and to facilitate communication between the patient and the primary care team, and reminder calls to patients prior to all medical appointments to eliminate barriers to outpatient follow-up. The Aim of the study being registered is to evaluate the effects of an ongoing randomized natural experiment on readmissions, health care use, adherence to medication instructions, and preparedness for discharge. This natural experiment features random assignment to one of two QI interventions, Tier 2 or Tier 3, and exclusively targets patients at high risk for readmission, those with one or more of the following risk factors for readmission: discharge diagnosis of congestive heart failure or COPD; length of stay \> 3 days; age \> 60; or previous hospitalization within the past six months. The investigators hypothesize that the Patient Navigator intervention (Tier 3) compared to usual care (Tier 2) will increase the rates of 30-day post-discharge PCP visits; reduce 30-day hospital readmission rates; and reduce the total number of days in hospital in the 180 days following the index admission for high risk patients. The investigators further expect that the PN intervention will improve patient adherence to medication instructions in the HCP and reduce the probability of reported problems with post-discharge care.
NCT00715884
The objective of this study is to show similar (non-inferior) safety and effectiveness between CYPHER® ELITE™ and CYPHER® Bx VELOCITY® Sirolimus-Eluting Stent Systems in a prospective, multi-center, randomized clinical study for the treatment of de novo native coronary lesions.
NCT02039622
The study is multicenter, post-authorization, observational and ambispective
NCT00799344
To address early vessel healing and thrombus formation after deployment of three distinct groups of stents
NCT01676207
In contrast to the extensively studied coronary collateral circulation within the heart, clinical attention has been paid only anecdotally to extracardiac-to-coronary anastomoses. Usually this has been in the form of case reports giving account of angiographically visible anastomoses between the coronary circulation and the internal mammary artery (IMA), typically in the presence of a chronic occlusion of a coronary artery. In the anatomical literature,the most common types of extracardiac anastomoses include bronchial-to-coronary-artery and IMA-to-coronary-artery connections. Anastomoses between the IMA and the coronary circulation have been documented to occur in 12% of post-mortem patients with CAD. Importantly, hitherto existing observations typically have relied on visual methods insensitive for the adequate detection especially of structurally present but poorly functional anastomoses. On a diagnostic coronary angiogram, collaterals are visible only if the recipient vessel is subtotally stenotic or fully occluded, or can be rendered visible during coronary spasm or by temporary balloon occlusion of the recipient artery and simultaneous injection of contrast medium into the other arteries, respectively. Similarly, the macroscopic pathologic postmortem examination is likely to underestimate the true number of extracardiac coronary collaterals. The purpose of this study is to determine the in vivo prevalence and functional distribution of IMA-to-coronary collateral supply via both the right and the left coronary artery.
NCT01615003
In this study, typical cases of blood stasis syndrome of coronary heart disease are selected, by using microRNA chip, cDNA microarray and other bioinformatics technologies to filter and verify related miRNA and its target gene of Coronary Heart disease. Meanwhile, intervene by Xuesaitong soft capsules to investigate related miRNA and its target gene of Coronary Heart disease.
NCT01725373
In patients with unprotected left main disease (ULMD), angioplasty is emerging as an alternative technique. The investigators aimed to determine the rate of major cardiovascular events in patients treated by angioplasty for ULMD in a "real world" registry.
NCT02031315
Background The burden of sudden death (SD) in sub-Saharan Africa is unknown. The aim is to assess the incidence, etiology and patient characteristics of SD in a sub-Saharan country. Methods The Douala-SD study is a prospective, multicenter, community-based registry monitoring all cases of SD occurring in index areas of Douala city. Investigators will use the definition of SD as natural death occurring within 24h at the onset of symptoms. Demographic, clinical, electrocardiographic and biological variables (when available) of victims will be recorded. All deaths occurring in residents of health areas of interest will be checked for past medical history, circumstances of death, and autopsy (if possible). Conclusion This maiden Douala-SD study will provide comprehensive, contemporary data on the epidemiology of SD in a sub-Saharan African country and will help in the development of strategies to prevent and manage SD in Africa.
NCT01051986
The purpose of this study is to compare early and 1-year graft patency rates of saphenous vein composite grafts with those of right internal thoracic artery composite graft and mid-term clinical outcomes in patients who undergo off-pump coronary artery bypass grafting(OPCAB). We also evaluate microscopic findings of saphenous vein graft harvested no touch technique and used as composite graft.
NCT01418248
Heart Failure with Preserved Ejection Fraction (HFpEF) and Pulmonary Hypertension (PH) can be diagnosed noninvasively by Exercise Echocardiography (ExE) and Cardiopulmonary Exercise Testing (CPX) as compared with gold standard invasive hemodynamic assessment.
NCT01306526
Obstructive sleep apnea (OSA) is a respiratory disorder of sleep characterized by recurrent episodes of complete or partial upper airway obstruction, leading to intermittent oxygen deprivation. This results in sympathetic activation and surges in blood pressure, production of vasoactive substances, as well as activation of the inflammatory and procoagulant pathways. Epidemiological evidence indicates the prevalence of OSA is higher in patients with coronary artery disease than in the general population. The investigators recently showed that 65.7% and 41.9% of the Singapore patients admitted with myocardial infarction were found to have previously undiagnosed OSA and severe OSA, respectively. In a 10-year follow-up epidemiological study, OSA was independently associated with a higher prevalence of fatal and non-fatal cardiovascular events among the otherwise healthy general population. The investigators further showed that in patients who have undergone primary percutaneous coronary intervention for acute myocardial infarction, OSA was an independent predictor of future adverse event rates. Despite the observed association between OSA and adverse cardiovascular outcomes, the underlying pathophysiological mechanisms remain unclear. In this proposal, the investigators aim to elucidate the relationship between OSA and composition of coronary atherosclerotic plaques.
NCT00845091
The current research study proposes to examine participants with implantable cardioverter defibrillators (ICD) who are randomly assigned to either an exercise training program intervention or a heart healthy education program intervention. We will look at changes in the functioning of the autonomic nervous system over time and between intervention groups. We are also going to be looking at changes in frequencies of the ICD participants' heart arrhythmias and ICD therapies (e.g., pacing, shock).; as well as, changes in exercise tolerance, psychological well-being, and quality of life.
NCT00850720
The goal of this study is to evaluate specific hormone levels in children undergoing heart surgery in order to identify patterns associated with any unstable vital signs. The data collected will provide preliminary answers to the question "Are hormone values a determining factor for drug administration and dosing levels?" and help establish the benefits of routine steroid and hormone administration. Sixty subjects will be enrolled. Blood samples will be drawn before the surgery,and again nine hours after surgery for analysis. Other patient data such as medications, vital signs, routine lab values and treatments will also be analyzed. As our current standard of care includes routine doses of steroids, we believe this study will increase our general knowledge and improve the care of these critically ill children. The study will also provide the foundation needed for grant support from the American Heart Association, allowing for future larger scale studies.
NCT00006181
Promoting Healthy Lifestyles: Alternative Models' Effects (PHLAME) is a research study to evaluate and compare two ways to promote healthy behaviors, (regular physical activity, less than 30% calories from fat, 5 or more servings of fruits plus vegetables each day and maintain a healthy weight). Unhealthy nutrition practices and sedentary (inactive) lifestyles are the two most common harmful behaviors in the United States. Our two health promotion methods are 1) a team-based approach and 2) a one-on-one approach involving meetings with a health counselor. A third group only receives the same evaluation and their results and is the control group. Study participants are firefighters from 36 fire stations in Oregon and Washington. The goals of the study are increased physical activity and fitness, improved nutrition, and improved energy balance (reduced body fat). Changes in these factors can help lower risks for heart disease, some types of cancer, diabetes, hypertension and musculoskeletal injuries. Results from PHLAME will provide information on how best to help adults achieve and maintain healthy lifestyles.
NCT01213862
Home visits (HV) are one of the multidisciplinary approaches that has already shown to benefit the follow-up of Heart Failure (HF) patients. It is considered to be one of the most effective and humane approaches as it educates and takes care of the patient in his/her routine environment. In this study, the follow-up of HF patients in a home setting after being discharged from hospital will include the reinforcement, monitoring and re-evaluation of guidelines previously provided about the disease and self-care, compliance to prescribed medicines and, specially, the early recognition of decompensation signs and symptoms by patients and their caregivers.
NCT01759433
The reference intervals for Sonoclot Analysis may be different between Chinese and American. So far, no reference interval has been established in Chinese for Sonoclot Analysis. This study is going to establish the first Chinese reference intervals for Sonoclot Analysis and test whether they are different from American reference intervals.
NCT00234104
This drug is being developed to treat cardiac edema. The primary purpose of this study is to investigate the dose response for body weight in seven-day repeated oral administration of OPC-41061 at 15, 30, and 45 mg or placebo in patients with extracellular volume expansion secondary to CHF despite taking furosemide at 40 mg/d or more. This study is being conducted in Japan.
NCT01128790
The purpose of this study is to determine the effect of remote ischemic preconditioning on exercise capacity in patients with heart failure.
NCT02017132
Pomegranate has gained widespread popularity since the health effects of the whole fruit, as well as its juices and extracts, have been studied in relation to a variety of chronic conditions such as hypertension, diabetes, obesity, cancer and cardiovascular disease. The fruit consists of peel, seeds and berries or arils. The peel is rich in minerals and compounds such as polyphenols, but is not an edible part of the plant. In order to harness the benefits of all parts of the fruit, the whole fruit can be crushed and powdered and then easily consumed as pomegranate extract capsules. Pomegranate has been shown to be effective at reducing cardiovascular disease risk factors, particularly with respect to decreasing blood pressure and increasing insulin sensitivity. Dietary polyphenols may also suppress body fat growth. Recently, positive effects on fat reduction have been shown using pomegranate and its extracts. In animal models it has been shown for both extract and leaf that there were significant decrease in food consumption and body weight, inhibiting the development of obesity. In the few human studies, there appeared to be a trend towards a reduction in waist circumference and fat mass, plus a halt in body weight increase, for both juice and seed oil. This parallel, double blinded, randomised, placebo controlled trial aims to confirm previous results concerning the effect of whole pomegranate fruit on biochemical and physiological markers using a new pomegranate extract and to conduct original work to explore its effect on body weight, measurements and fat mass. Any similar interventions have not been double blinded or used pomegranate in extract form. Changes in physiological and biochemical markers will also be investigated. The study hypothesis is that pomegranate extract will reduce BMI and body weight, fat mass, body measurements and blood pressure.
NCT00699543
Objectives : To evaluate the clinical efficacy, angiographic outcomes, and safety of the new paclitaxel-eluting coronary stent (CoroflexTM Please, B Braun, Germany), compared with another paclitaxel-eluting coronary stent system (TaxusTM, Boston Scientific, USA) in the treatment of coronary stenosis. Study Design : Prospective, open label, 2: 1 randomized multi-center trial. Patients will be randomized according to the type of drug eluting stent ( CoroflexTM Please vs. TaxusTM). Randomization will also be stratified per hospital for the presence of DM and the presence of long lesions (lesion length \> 28mm) Patient Enrollment :915 patients enrolled at 13 centers in Korea. Patient Follow-Up :Clinical follow-up will occur at 1, 4, 9, 12 months and 2, 3years after intervention. Investigator or designee may conduct follow-up as telephone contacts or office visits. Primary Endpoint :Clinically driven Target vessel Revascularization (TVR) at 9 months. Secondary Endpoints :A. Clinical safety and efficacy end points 1. Major Cardiac Adverse Events (MACE; All Death, cardiac death, Myocardial infarction (Q-wave and non-Q wave), TVR) 2. Target Vessel Failure (TVF; cardiovascular death, myocardial infarction, clinically driven TVR) 3. Stent thrombosis B. Angiographic efficacy end points 1. in-stent binary restenosis by QCA 2. in-stent and in-lesion late loss by QCA 3. in-stent and in-lesion MLD and percentage diameter stenosis by QCA immediately after the index procedure and at 9 months of follow-up