Prognosis

• low blood pressure ^b
• moderate to severe mitral regurgitation ^a
• a third heart sound ^b

Why?

Mitral regurgitation increases the risk of dying

Patient	Prognostic Factor	Outcome	CER	RR (95% CI)	NNF+ (95% CI)
acute chest pain a	moderate to severe mitral regurgitation independent	death at 2.5 years	20%	2.4 (1.5 to 3.7)	4 (2 to 10)