Active clinical trials for "Death, Sudden, Cardiac"

Sudden cardiac death remains one of the major leading causes of death. Therapeutic hypothermia is a validated standard procedure to avoid or minimize cognitive deficits after cardiac arrest. To assess the efficiency of different cooling methods and further improve these methods, the investigators collected blood samples to measure the neuron specific enolase (NSE) in patients treated with invasive cooling as compared to patients treated with non-invasive cooling.

The purpose of this study is to characterize the chronic performance of the St. Jude Medical SJ4 connector and RV high voltage SJ4 leads.

The purpose of this study is to determine whether waveforms of the intracardiac electrograms, acquired through an ICD, can be used: to predict malignant ventricular arrhythmias, requiring appropriate ICD therapies, and to predict progression of heart failure in patients with ICD.

Prophylactic implant of an ICD (implantable cardioverter defibrillator) for prevention of sudden cardiac death from a life-threatening heart rhythm abnormality is a standard recommendation for patients with ejection fractions (EFs) of 35% or less. The main purpose of the trial is to determine why patients who are receiving care at a community-based cardiology program and are known to have a low ejection fraction (EF) measurement of 35% or less per echocardiogram and/or cardiac nuclear scan testing are not being approached for ICD (implantable cardioverter defibrillator) implant. Additionally, other secondary purposes of the trial are: 1) to determine if these patients are or are not receiving recommendation from their provider to undergo prophylactic ICD implant 2) identify the reasons providers are not recommending ICD implant for their patients with reduced EFs 3) determine reasons patients recommended for ICD implant by their provider elect not to have the implant.

This study will help to provide better input to state health and education departments to improve the processes for CPR education. This will also help the EP council explore the opportunities to partner with other professional societies and other stake holders that have interest in this topic. Engagement of private-public partnerships for improving overall CPR education.

The current COVID19 pandemic has afflicted almost the whole globe. The stress related to the pandemic, not the direct virus-related injury, can be potentially associated with acute cardiovascular events due to a large list of physical and psychosocial stresses. This study is a cross sectional study that will enroll patients evaluated during the COVID19 pandemic period for acute cardiovascular events.

The overall aim of this study is to improve our understanding of the effects of the build-up of amyloid deposits in the heart, in particular, our understanding of the risk of abnormal heart beats, or rhythms, associated with people with cardiac (heart) amyloidosis. Symptoms such as palpitations (fast, strong or irregular heart beat) and blackouts are common in people with cardiac amyloidosis, but there is not enough information on what causes this. At present, there is also not enough information on when they occur, how often they happen, and which patients are at risk of having serious, life-threatening types of abnormal heart rhythms. Some of these abnormal heart rhythms can be treated with medicine; others need electronic devices (e.g. pacemakers) implanted or inserted in the heart to prevent serious harm. The information on when is the best time to implant these life-saving devices remains limited. In this study, a small device known as an implantable loop recorder (ILR) will be implanted under the skin on the chest wall to continuously monitor participants' heart rhythm. This will help us answer some of the questions about what causes the abnormal heart rhythms, when they happen, and which patients are particularly likely to have them. Furthermore, it may help us to identify earlier, rather than later, those who are at risk of developing abnormal heart rhythms. This may lead to improvements in the care of people with cardiac amyloidosis in the future. Participants may not directly benefit from taking part in this study; however, there is a chance that the ILR may reveal heart rhythm abnormalities in some participants which might not be picked up otherwise, and so may lead to a change in their treatment.

The association between alcohol consumption and cardiovascular disease (CVD) has mostly been examined using broad endpoints or cause-specific mortality. The purpose of our study is to compare the effect of alcohol consumption in the aetiology of a range of cardiovascular disease phenotypes.

The EVOLVO study is designed to compare the remote defibrillator management to the current standard of care, to assess its ability to treat and triage patients more effectively.

Studies have shown that the risk of developing heart arrhythmias, is increased in patients receiving medication for Attention-deficit hyperactivity disorder (ADHD) and depression. The QT-interval on a electrocardiogram (ECG) is often used to assess the patients risk of developing heart arrhythmias. The QT-interval defines the hearts electrical resting period and a long interval is linked to an increased risk of developing heart arrhythmias. In this project the investigators wish to examine possible side-effects in patients receiving medication for ADHD and depression and their dynamic QT-interval changes, by analysing the ECG changes that occur during "Brisk Standing".