Coronary angiography is useful for defining the coronary artery anatomy in patients with UA/NSTEMI and for identifying subsets of high-risk patients who can benefit from early revascularization. The benefits of early invasive<unk> rategy have been discussed in the previous section (see Unstable angina /<unk> <unk><unk>  myocardial infarction initial conservative versus initial invasive<unk> rategies).  Coronary revascularization with either<unk>  or CABG helps improve prognosis, relieve symptoms, prevent ischemic complications, and improve functional capacity. In recent years, increased utilization of<unk>  has been noticed mainly secondary to technical advancements which have led to less complications associated with the procedure.
The term<unk>  refers to the whole group of percutaneous techniques, including<unk> andard balloon angioplasty (PTCA), intracoronary<unk> enting, and atheroablative technologies (such as atherectomy, thrombectomy, or laser angioplasty). Today, the majority of<unk> s involve balloon dilation and coronary<unk> enting.  The two main classes of<unk> ents available currently include bare metal<unk> ents and drug eluting<unk> ents. Drug eluting<unk> ents have been demonstrated to markedly reduce the risk of restenosis compared with bare-metal<unk> ents.  With the increasing use of GP IIb/IIIa inhibitors, clopidogrel, and/or other antithrombotic drugs in UA/NSTEMI patients, complications related to<unk>  have decreased dramatically, and both acute and long-term outcomes following<unk>  have improved with success rates as high as 95%.
Unstable angina / non ST elevation myocardial infarction recommendations for PCI
Unstable angina / non ST elevation myocardial infarction recommendations for CABG
Chronic stable angina treatment nitrates
Chronic stable angina treatment anti-lipid agents
Chronic stable angina treatment beta blockers
Chronic stable angina treatment calcium channel blockers
Chronic stable angina treatment aspirin
Chronic stable angina treatment angiotensin converting enzyme inhibitors 