PARADOXICAL LOW FLOW LOW GRADIENT SEVERE AORTIC STENOSIS WITH PRESERVED LEFT VENTRICULAR EJECTION FRACTION: IMPACT OF SURGERY VERSUS MEDICAL THERAPY

Combining transaortic flow and gradient defined four different aortic stenosis (AS) subgroups [normal flow, high gradient [NF/HG]; normal flow, low gradient [NF/LG]; low flow, high gradient [LF/HG] and low flow, low gradient [LF/LG]). The natural history and need for aortic valve replacement (AVR)