Chronic total occlusion: To treat or not to treat

Table 3 Specific recommendations on the treatment of chronic total occlusion in the 2012 ACCF/SCAI/STS/AATS/ASNC/HFSA/SCCT Appropriate Use Criteria for Coronary Revascularization Focused Update[14]

		ANGINA
		Asymptomatic	I	II	III	IV
Risk in the ischemia test	High	Uncertain	Appropriate	Appropriate	Appropriate	Appropriate	Max	Treatment level
		Uncertain	Uncertain	Uncertain	Appropriate	Appropriate	Med
		Uncertain	Uncertain	Uncertain	Appropriate	Appropriate	Min
	Medium	Uncertain	Uncertain	Uncertain	Appropriate	Appropriate	Max
		Inappropriate	Uncertain	Uncertain	Uncertain	Uncertain	Med
		Inappropriate	Uncertain	Uncertain	Uncertain	Uncertain	Min
	Low	Inappropriate	Inappropriate	Inappropriate	Uncertain	Uncertain	Max
		Inappropriate	Inappropriate	Inappropriate	Inappropriate	Inappropriate	Med
		Inappropriate	Inappropriate	Inappropriate	Inappropriate	Inappropriate	Min

It shows the 45 possible scenarios depending on the risk of mortality based on the findings on ischemia tests, symptoms and level of treatment.