Recommendations for surgical treatment of aortic regurgitation
Recommendation	Grade of recommendation	Level of evidence
Symptomatic patients with severe AR, regardless of LV systolic function	I	B
Asymptomatic patients, with severe AR and LVEF < 50%	I	B
Patients with severe AR scheduled to undergo other cardiac surgeries	I	C
Asymptomatic patients with severe AR, normal LV systolic function (LVEF ≥ 50%), and significant LF dilatation (LVSD > 50 mm)	IIa	B
Patients with moderate AR scheduled to undergo other cardiac surgeries	IIa	C
Asymptomatic patients with severe AR, normal LV systolic function (LVEF > 50%), progressive severe LV dilatation (LVEDD > 65 mm), and low surgical risk	IIb	C

AR: aortic regurgitation; LV: left ventricle; LVEDD: left ventricular end-diastolic diameter; LVEF: left ventricular ejection fraction; LVSD: left ventricular systolic diameter.