Contraindications to Exercise Treadmill Testing (Exercise Tolerance Testing)

Acute myocardial infarction (MI), within 2 days

Ongoing unstable angina

Uncontrolled cardiac arrhythmia with hemodynamic compromise

Active endocarditis

Symptomatic severe aortic stenosis

Decompensated heart failure

Acute pulmonary embolism, pulmonary infarction, or deep vein thrombosis

Acute myocarditis or pericarditis

Acute aortic dissection

Physical disability that precludes safe and adequate testing

Known obstructive left main coronary artery stenosis

Moderate to severe aortic stenosis with uncertain relation to symptoms

Tachyarrhythmias with uncontrolled ventricular rates

Acquired advanced or complete heart block

Hypertrophic obstructive cardiomyopathy with severe resting gradient

Recent stroke or transient ischemic attack

Mental impairment with limited ability to cooperate

Resting hypertension with systolic or diastolic blood pressures >200/110 mm Hg

Uncorrected medical conditions, such as significant anemia, important electrolyte imbalance, and hyperthyroidism