Prognosis

Refer all patients with symptomatic angina pectoris presenting spontaneously >36 hours after admission for arteriography, followed by PTCA or CABG as required. ^a

Why?

• Performing angiography followed by PTCA or CABG on all patients with postinfarction ischaemia reduces subsequent reinfarction and unstable angina compared with conservative management unless patients have severe angina. There is no clear effect on mortality. ^a

Invasive therapy following MI reduces reinfarction and unstable angina compared with conservative therapy

Patient	Treatment	Comparison	Outcome	CER	RRR (95% CI)	NNT (95% CI)
myocardial infarction a	invasive therapy (arteriography and PTCA or CABG)	medical therapy	unstable angina at 12 months	39%	39% (24% to 52%)	9 (6 to 16)
			reinfarction at 12 months	11%	47% (18% to 66%)	20 (12 to 63)