Assertion: severe aortic stenosis | /r/HasProperty | peak aortic jet velocity
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Source sentences:
text: Kang et al44 reported the results of surgery versus no surgery in a nonrandomized cohort of 197 asymptomatic patients with very severe aortic stenosis and normal LV ejection fraction (aortic valve area <0.75 cm2 and peak aortic jet velocity >4.5 m/s), 102 of whom underwent preemptive surgery and 95 of whom were followed up without surgery.