Mechanical Alternans Study
Mechanical Alternans Study
The purpose of this study is to determine whether mechanical alternans (alternating strong
 and weak heart beats with a constant beat-to-beat interval), can be used to predict malignant
 ventricular arrhythmias, requiring defibrillation or appropriate ICD therapies, and to
 predict progression of heart failure and death.
Inclusion Criteria:

 -  structural heart disease

 -  ischemic or non-ischemic cardiomyopathy

 Exclusion Criteria:

 -  pregnancy

 -  age < 18 years old