Prognosis

The risk of developing heart failure is increased with:

• a dilated heart ^b
• a reduced ejection fraction ^b

Why?

A dilated heart and a reduced ejection fraction increase the risk of congestive heart failure

Patient	Prognostic Factor	Outcome	RR   (95% CI)
MI; survived 6 weeks b	10% decrease in ejection fraction independent	death or congestive heart failure at 6 months	1.59 (1.48 to 1.71)
	Killip class III v. I independent		1.34 (1.28 to 1.41)
	Killip class II or more independent		1.16 (1.12 to 1.20)