"Diastolic flow reversal is assessed on the proximal descending thoracic aorta using pulsed wave Doppler. The sample volume is placed in the vessel centre at the level of the aortic isthmus distal to the origin of the left subclavian artery 1-2."
"A holodiastolic retrograde flow with an end-diastolic flow velocity >20cm/s (measured at peak R wave) and a velocity time integral of >15cm is indicative of severe aortic regurgitation 1-2."
"A holodiastolic retrograde flow with an end-diastolic flow velocity >20cm/s (measured at peak R wave) and a velocity time integral of >15cm is indicative of severe aortic regurgitation 1-2."
"A holodiastolic retrograde flow with an end-diastolic flow velocity >20cm/s (measured at peak R wave) and a velocity time integral of >15cm is indicative of severe aortic regurgitation 1-2."
"Holodiastolic flow reversal (HDR) refers to a backward flow typically observed in the descending aorta during the whole diastolic phase and has been observed in the setting of moderate to severe aortic regurgitation."
Expected headings
"Ultrasound"
"Echocardiography"
"MRI"
"Echocardiography"
"MRI"