Percutaneous treatment in acute coronary syndromes

Table 1 Recommendations for revascularization in non-ST-segment elevation acute coronary syndromes[1]

Situation	Class of recommendation	Level of evidence
An invasive strategy is indicated in patients with:	I	A
GRACE score > 140 or at least one high-risk criterion
Recurrent symptoms
Inducible ischemia at stress test
An early invasive strategy (< 24 h) is indicated in patients with GRACE score > 140 or multiple other high-risk criteria	I	A
A late invasive strategy (within 72 h) is indicated in patients with GRACE score < 140 or absence of multiple other high-risk criteria but with recurrent symptoms or stress-inducible ischemia	I	A
Patients at very high ischemic risk (refractory angina, with associated heart failure, arrhythmias or hemodynamic instability) should be considered for emergent coronary angiography (< 2 h)	IIa	C
An invasive strategy should not be performed in patients:	III	A
At low overall risk
At a particular high-risk for invasive diagnosis or intervention

GRACE: Global Registry of Acute Coronary Events.