Active clinical trials for "Death, Sudden"

The purpose of the study is to evaluate the safety and efficacy of wearable defibrillator use in patients with left ventricular dysfunction or advanced heart failure symptoms, who have a high-risk for sudden cardiac death but are either not eligible for an implantable defibrillator under current guidelines or are not able to receive the device due to their condition.

This study evaluates the usefulness of noninvasive tests of the structure of the heart and the nervous system controlling the heart. It will assess whether combining tests that evaluate heart structure with others that measure the nervous system controlling the heart will identify most patients who develop serious heart rhythm problems after a heart attack.

To continue surveillance of coronary heart disease (CHD) mortality and morbidity in the seven county metropolitan Minneapolis/St. Paul (Twin Cities) areas.

Standard, high lead and sodium channel provoked electrocardiograms of a healthy volunteers will be performed to observe the various ECG changes. Participants will the undergo detailed imaging with cardiac magnetic resonance imaging and deep genotyping to identify structural or genetic variants which might dictate the electrocardiographic patterns at rest and with sodium channel provocation.

Risk prediction in in inherited heart rhythm conditions that may cause sudden cardiac arrest or death is difficult. Sometimes the risks may be low but the loss of life in an otherwise healthy young individual is catastrophic. Clinicians often treat to the extreme to prevent this and so often those at unknown risk for a serious cardiac event are treated with an implanted cardioverter defibrillator (ICD) to protect against sudden death even though the risk is low or unknown. ICDs them selves are not without adverse events such as needing battery replacements, mechanical complications, inappropriate shocks and body image and self esteem issues for the patient. This study will use an inject able monitor that is less invasive to monitor inherited heart rhythm patients long term to help gather long term heart rhythm data (3 years) on patients with an inherited heart rhythm that will help to detect symptoms of dangerous heart rhythms so that the appropriate care can be provided.

Patients in general wards have abnormal physical values preceding in-hospital cardiac arrest or a transfer to intensive care unit (ICU). The purpose of Medical Emergency Team (MET) or EMS is to interfere early enough in deteriorating patient status to prevent adverse outcomes like cardiac arrest or transfer to intensive care unit. The aims of this study are to record and analyze the effects of EMS and department of emergency and both afferent and efferent limbs of MET activity in Finnish tertiary Hospital.

The aim of this study is to analyze whether the sympathetic tone, measured indirectly and directly by muscle sympathetic nerve activity recording, is elevated in patients with heart failure receiving an appropriate shock from their implantable cardiac defibrillator (ICD) compared to heart failure patients not receiving a shock from their ICD. All parameters measured in this study will be used to build a risk algorithm able to identify heart failure patients at high risk for sudden cardiac death who could receive an ICD.

This research study includes patients ages 1 to 25 years old with Lamin A/C related muscular dystrophy (LMNA-MD). The goal of this study is to evaluate how the heart is affected in children and teens with LMNA-MD. The evaluation includes an echocardiogram, an electrocardiogram, an electrophysiological study and the implantation of a subcutaneous ECG holter monitor.

Sudden cardiac death (SCD) is one of the major causes of mortality in adults with congenital heart disease (ACHD). Risk stratification for sudden cardiac death in this patient group is challenging and at the current moment there are no clear guidelines on implantable cardioverter-defibrillator (ICD) implantation for primary prevention of SCD in this young patient population. The reason for this is the fact that this is a heterogenous group of patients and SCD is a relatively rare event. Because of this there have been no prospective studies on SCD in ACHD. However, multiple retrospective studies on ICD implantation in ACHD have shown that this treatment does appear to be effective. Researchers from the Academic Medical Center have identified several risk factors for sudden cardiac death. A risk score was created using this data, which has been validated in an internal and external cohort in a retrospective setting. The design of this study, including the conception of the risk score, its calculation method and validation will be published in an international scientific peer-reviewed journal. The hypothesis of this study is that the risk score accurately predicts the risk of sudden cardiac death.

The aim of the study is to assess the cardiac innervation in patients with heart failure to better select candidates for an implantable cardioverter defibrillator. Cardiac innervation will be assessed using an imaging agent administered intravenously.