This study will be conducted among participants in the Mayo Clinic Apical Ballooning Registry. These patients were prospectively diagnosed with Apical Ballooning Syndrome at the time of presentation with their acute illness, and consented to participation in a registry. They are residents of Olmsted County, and the surrounding regions for which the Mayo Clinic serves as a tertiary care center. Enrollment in the registry requires satisfaction of standard criteria for the diagnosis of ABS and includes the administration of a standardized questionnaire. Subjects have agreed to participate in yearly follow up questionnaires about their health status.