Patients who are enrolled in protocols in the Cardiology Branch of the National Heart Lung and Blood Institute (NHLBI) and diagnosed with chronic ischemic heart disease and left ventricular dysfunction will be asked to participate in this HRQOL study. Patients will complete measures of HRQOL (Medical Outcomes Short Form 36 Survey; Minnesota Living with Heart Failure Questionnaire) and symptom measures (anginal frequency subscale of the Seattle Angina Questionnaire; cardiopulmonary subscale of the Heart Transplant Symptom Checklist). Underlying cardiac condition will be assessed using exercise thallium imaging parameters (METS and perfusion defects) and positron emission tomography (PET) imaging parameter (viability). A sample size of 90 subjects is desired for this study. Data will be analyzed using multivariate statistics. It is expected that this study will provide new information regarding how patients with ischemic heart disease and left ventricular function feel their chronic illness and its corresponding treatment(s) affects their HRQOL.