Active clinical trials for "Myocardial Ischemia"

The purpose of this 12-month, observational, follow-up study is to collect additional data (by telephone contact) with which to assess the efficacy, safety, and effects of intramyocardial injections of adult autologous CD34+ cells on quality of life (QoL) in subjects with chronic refractory myocardial ischemia. No treatments will be administered during this study. However, the investigators and other study site personnel and the subjects will remain blinded to the treatment assignments from the core therapeutic study (# 24779) so as to provide a total of 24 months of blinded data.

The ACIC is a Collaborative Quality Improvement (CQI) program involving the collection of data related to: indications for Coronary Computed Tomography (CCTA), patient health characteristics, acquisition techniques of CCTA scans, physician interpretation of results and short-term outcomes over a 90 day period.

The safety and efficacy of the Endeavor(TM) ABT-578 Eluting Coronary Stent System has been assessed in a series of studies. The stent is coated with a proprietary drug compound that is designed to reduce restenosis. This prospective multi-center study has been initiated: To document the acute and mid-term safety and overall clinical performance of the stent system in a "real world" patient population requiring stent implantation. To assess the event rate in patient subgroups with specific clinical indications and/or vessel or lesion characteristics.

Postoperative arrhythmias (heart irregularities) are one of the most common complications after cardiac surgery and are associated with increased morbidity and mortality. Preoperative depression may be an important co-factor in the generation of postoperative arrhythmias due to sympathetic hyperactivity evident in patients with depression. Objectives: To determine the effect of preoperative depression on postoperative arrhythmia in patients undergoing elective coronary artery bypass graft (CABG) surgery. Prospective observational study, 120 patients undergoing elective CABG surgery ECG will be preformed preoperatively on all patients. All patients will be assessed for signs of depression using the Prime MD Patient Health Questionnaire (Prime MD PHQ) one week before surgery and 6 weeks postoperatively.Based on the Prime MD PHQ results, patients will be divided into two groups: those with or without signs of depression. Heart rate and rhythm monitoring with Holter will be performed for 3 days postoperatively in order to compare the incidence of postoperative arrhythmias between groups. The primary outcome is the number of patients with and without depression suffering from ventricular and/or supraventricular arrhythmias. Secondary outcomes include all cause mortality, non-fatal myocardial infarction, cardiac arrest, and congestive heart failure. CABG surgery is the most common operative procedure in North America and arrhythmias are one of the most common postoperative complication. It is estimated that about a third of these cardiac patients suffer from preoperative depression and therefore may be exposed to a higher risk of perioperative morbidity and mortality. If an association between preoperative depression and postoperative arrhythmia is found, treatment modalities may be indicated to reduce the prevalence of perioperative arrhythmia in patients with preoperative depression undergoing cardiac surgery.

Cardiopulmonary bypass (CPB) is known to alter pharmacokinetics (PK) and brain sensitivity to several drugs, including propofol. Few studies, however, have tested if propofol pharmacokinetical alterations observed after CPB could contribute to the increased hypnotic effect of propofol after CPB. This study was designed to test the hypothesis that changes in the PK of propofol contribute to an increase in its hypnotic effects after CPB as evidenced by changes in bispectral index (BIS) values. Twenty undergoing coronary artery bypass graft patients will be allocated in two groups: 1) CPB groups and 2) off-pump coronary artery bypass graft. Bispectral Index values and blood samples for plasma propofol concentration measurements will be collected along the surgery and up to 12 hours in the post-operative period. Plasma propofol concentrations, Bispectral index values and propofol PK will be compared between the groups.

This study includes male subjects age 45 to 70, who have sustained a traumatic Spinal Cord Injury (SCI) at least 10 years prior. Subjects will be interviewed for demographic data, including heart disease risk factors. A blood test for cholesterol levels will be drawn. A CT scan of arteries of the heart will be performed to determine the presence of coronary calcium, a marker of subclinical Coronary Heart Disease. Scoring of Coronary Calcium or Coronary Calcium Score (CCS) is automated by the CT scanner. Each subject's Framingham Risk Score will be calculated; This is an individuals 10 year risk of having a Coronary Heart Disease event (significant symptoms). In addition, it will be determined if subjects are being treated for diagnosed dyslipidemia (high cholesterol) according to the National Cholesterol Educational Program (NCEP) guidelines. The proposed pilot study aims to better understand the problem of Coronary Heart Disease in individuals with Spinal Cord Injury, specifically CCS in SCI, when compared to the general population.

In an observational multi-centre study (HEROS), the effects of starting treatment with rosuvastatin were assessed, on low-density lipoprotein cholesterol (LDL-C) goal achievement, in patients with a dissimilar high-risk profile who had not been treated with cholesterol lowering drugs at least in the past three months. Also set-up costs of rosuvastatin treatment and proportional changes in LDL-C and high-density lipoprotein cholesterol (HDL-C) were studied.

To document the safety and overall clinical performance of the Resolute Zotarolimus-Eluting Coronary Stent System in a real-world patient population requiring stent implantation.

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.

This study aimed to examine the prevalence of glucose metabolism disorders (GMD)in the patients with coronary artery disease and the relationship between different GMDs and coronary artery disease (CAD).