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These guidelines are intended to apply to adult patients with stable known or suspected ischemic heart disease (IHD), including those with new-onset chest pain (ie, low-risk unstable angina) or stable pain syndromes. Patients who have “ischemic equivalents,” such as dyspnea or arm pain with exertion, are included in the latter group. Many patients with IHD may become asymptomatic with appropriate therapy. Accordingly, the follow-up sections of this guideline pertain to patients who were previously symptomatic, including those who have undergone percutaneous coronary intervention (PCI) or coronary artery bypass graft (CABG). In this document,“coronary angiography” is understood to refer to invasive coronary angiography.