Use of Microvolt T-Wave Alternans Testing in Clinical Practice to Reduce Cardiac Arrest and Sudden Cardiac Death
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منابع مشابه
Multiple autonomic and repolarization investigation of sudden cardiac death in dilated cardiomyopathy and controls.
BACKGROUND Prophylactic defibrillator implantation is recommended in dilated, nonischemic heart disease and left ventricular ejection fraction of ≤0.30 to 0.35. Noninvasive testing should improve accuracy in decision making of prophylactic defibrillator implantation. METHODS AND RESULTS We enrolled 60 patients (median age, 57 years) with dilated cardiomyopathy and left ventricular ejection fr...
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INTRODUCTION We designed a prospective observational study targeting a selective population of patients undergoing elective coronary artery bypass grafting with normal systolic function. In this study we looked at the prevalence of pre-operative microvolt T-wave alternans and if it predicts atrial fibrillation after surgery. METHODS The inclusion criteria included all patients referred to the...
متن کاملSudden cardiac death risk stratification in dilated cardiomyopathy: climbing the pyramid of knowledge.
N onischemic dilated cardiomyopathy (NIDCM) is the second leading cause of sudden cardiac death (SCD) in the United States. As with coronary artery disease, large-scale clinical trials evaluating implantable cardioverter defibrillator (ICD) therapy based on noninvasive risk markers have focused largely on left ventricular ejection fraction (LVEF). These studies demonstrate that ICD use in selec...
متن کاملPredictive value of microvolt T-wave alternans for sudden cardiac death in patients with preserved cardiac function after acute myocardial infarction: results of a collaborative cohort study.
OBJECTIVES We conducted a collaborative cohort study to evaluate the predictive power of microvolt T-wave alternans (TWA) in patients with preserved left ventricular ejection fraction (LVEF) after myocardial infarction (MI). BACKGROUND There is little information available about the prognostic value of risk stratification markers in this population. Although these patients have a relatively g...
متن کاملImmediate ventricular tachycardia after abnormal microvolt T-wave alternans.
Microvolt T-wave alternans (MTWA) is a promising non-invasive method of evaluating repolarization abnormalities. Its presence is strongly related to the occurrence of malignant ventricular tachyarrhythmias and is therefore regarded as a risk marker for sudden cardiac death. Most recent studies have described the usefulness of MTWA in selecting patients who may benefit from a cardioverter-defibr...
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