I recently had an abnormal thallium test showing inferior-apical ischemia. Calcium score was zero. My cardiologist considers the thallium test a false positive. I also have an unrelated arrythmia (pvc's) for the past 10 years controlled with atenolol. I am considered high risk for cardiac cath due to the arrythmia. In addition I have mild plaque in both carotid arteries. At the age of 62 I am advised to lose weight, continue my exercise program and manage stress as risk factors for CAD. Should I pursue a cardiac cath at this point?