Prevention

Avoid ^a

• preoperative hypoxia
• surgery during active infection if possible
• an inexperienced surgeon

Hypoxia , active endocarditis and an inexperienced surgeon increase the risk of infective endocarditis

Patient	Prognostic Factor	Outcome	CER	RR (95% CI)	NNF+ (95% CI)
prostethic valve replacement in last 2 months a	preoperative hypoxia < 8 2 mmHg) independent	infective endocarditis at 8 years	1.3%	7.9	11
	active endocarditis independent	infective endocarditis at 8 years	1.3%	6.8	13
	resident as primary surgeon independent	infective endocarditis at 8 years	1.3%	3.2	34